Applet para operaciones con matrices

Main.java

/*
* To change this template, choose Tools | Templates
* and open the template in the editor.
*/

package trabajo;

/**
*
* @author usuario
*/
public class Main {

/**
* @param args the command line arguments
*/
public static void main(String[] args) {
// TODO code application logic here
}

}

Matriz.java

/*
* To change this template, choose Tools | Templates
* and open the template in the editor.
*/

/**
*
* @author usuario
*/

import javax.swing.JOptionPane;
import java.text.DecimalFormat;

public class Matriz {

public int numerofilas;
public int numerocolumnas;
public double [][]matriz;

public Matriz(){
}

public Matriz(int nf, int nc){

numerofilas=nf;
numerocolumnas=nc;
matriz=new double[numerofilas][numerocolumnas];
for(int i=0;i < numerofilas;i++)
for(int j=0; j < numerocolumnas; j++)
matriz [i][j]=0;
}

public Matriz suma(Matriz b){
Matriz resultado;
if((this.numerofilas == b.numerofilas)&& (this.numerocolumnas == b.numerocolumnas)){
resultado = new Matriz(this.numerofilas, this.numerocolumnas);
for(int i=0; i < this.numerofilas; i++)
for(int j=0; j < this.numerocolumnas; j++)
resultado.matriz[i][j] = this.matriz[i][j]+ b.matriz[i][j];
return resultado;
}
else
System.out.println("Error en dimensiones de las matrices");
resultado=null;
return resultado;
}

public Matriz resta(Matriz b){
Matriz resultado;
if ((this.numerofilas == b.numerofilas)&(this.numerofilas == b.numerocolumnas)){
resultado = new Matriz (this.numerofilas,this.numerocolumnas);
for(int i = 0;i < this.numerofilas;i++)
for(int j=0;j < this.numerocolumnas;j++)
resultado.matriz[i][j] = this.matriz[i][j]-b.matriz[i][j];
return resultado;
}

else{
System.out.println("Error en dimensiones de las matrices");
resultado=null;
return resultado;
}
}

public Matriz Transpuesta(){
Matriz resultado;
resultado=new Matriz(this.numerocolumnas,this.numerofilas);
for(int i=0; i < this.numerofilas; i++)
for(int j=0; j < this.numerocolumnas; j++)
resultado.matriz[j][i]=this.matriz[i][j];
return resultado;
}

public Matriz determinantes(){
Matriz resultado;
resultado=new Matriz(this.numerocolumnas,this.numerofilas);
for(int i=0; i < this.numerofilas; i++)
for(int j=0; j < this.numerocolumnas; j++)
resultado.matriz[i][j] = this.matriz[i][j+1]-this.matriz[i+1][j];
return resultado;
}

public Matriz Multiplicacion(Matriz b){
Matriz resultado;
if(this.numerocolumnas==b.numerofilas){
resultado=new Matriz(this.numerofilas, b.numerocolumnas);
for(int i=0; i < this.numerofilas; i++){
for(int j=0; j < b.numerocolumnas; j++){
for(int k=0; k < this.numerocolumnas; k++)
resultado.matriz[i][j]+=this.matriz[i][k]*b.matriz[k][j];
}
}
return resultado;
}
else
System.out.println("Error en dimensiones de las matrices");
resultado=null;
return resultado;
}

public Matriz inversa()
{
Matriz resultado = new Matriz ();
resultado.matriz[0][0]=((this.matriz[1][1]*this.matriz[2][2])-(this.matriz[2][1]*this.matriz[1][2]));
resultado.matriz[0][1]=((this.matriz[1][0]*this.matriz[2][2])-(this.matriz[2][0]*this.matriz[1][2]));
resultado.matriz[0][2]=((this.matriz[1][0]*this.matriz[2][1])-(this.matriz[2][0]*this.matriz[1][1]));
resultado.matriz[1][0]=((this.matriz[0][1]*this.matriz[2][2])-(this.matriz[2][1]*this.matriz[0][2]));
resultado.matriz[1][1]=((this.matriz[1][0]*this.matriz[2][2])-(this.matriz[2][0]*this.matriz[1][2]));
resultado.matriz[1][2]=((this.matriz[0][0]*this.matriz[2][1])-(this.matriz[2][0]*this.matriz[0][1]));
resultado.matriz[2][0]=((this.matriz[0][1]*this.matriz[1][2])-(this.matriz[1][1]*this.matriz[0][2]));
resultado.matriz[2][1]=((this.matriz[0][0]*this.matriz[1][2])-(this.matriz[1][0]*this.matriz[0][2]));
resultado.matriz[2][2]=((this.matriz[0][0]*this.matriz[1][1])-(this.matriz[1][0]*this.matriz[0][1]));
return resultado;
}

public void leer(){
String aux;
for(int i=0; i < this.numerofilas; i++){
for(int j=0; j < this.numerocolumnas; j++){
aux = JOptionPane.showInputDialog(null,"Valores de la Matriz"+(i+1)+","+(j+1),JOptionPane.DEFAULT_OPTION);
this.matriz[i][j]=Double.parseDouble(aux);
}
}
}

public String toString(){

String aux="\n";
DecimalFormat df = new DecimalFormat("0.0000");
for(int i=0; i < numerofilas; i++){
for(int j=0; j < numerocolumnas; j++){
aux+=df.format(matriz[i][j])+" ";
}
aux+="\n";
}
aux+=" ";
return aux;
}
}

OperacionesMatrices.java

/*
* To change this template, choose Tools | Templates
* and open the template in the editor.
*/

/*
* OperacionesMatrices.java
*
* Created on 12-ene-2010, 19:29:29
*/

/**
*
* @author usuario
*/
public class OperacionesMatrices extends javax.swing.JApplet {

/** Initializes the applet OperacionesMatrices */
public void init() {
try {
java.awt.EventQueue.invokeAndWait(new Runnable() {
public void run() {
initComponents();
}
});
} catch (Exception ex) {
ex.printStackTrace();
}
}

/** This method is called from within the init() method to
* initialize the form.
* WARNING: Do NOT modify this code. The content of this method is
* always regenerated by the Form Editor.
*/
@SuppressWarnings("unchecked")
//
private void initComponents() {

jScrollPane1 = new javax.swing.JScrollPane();
jInternalFrame1 = new javax.swing.JInternalFrame();
jPanel1 = new javax.swing.JPanel();
jLabel1 = new javax.swing.JLabel();
jLabel2 = new javax.swing.JLabel();
jLabel3 = new javax.swing.JLabel();
jLabel4 = new javax.swing.JLabel();
jTextField1 = new javax.swing.JTextField();
jTextField2 = new javax.swing.JTextField();
jLabel5 = new javax.swing.JLabel();
jLabel6 = new javax.swing.JLabel();
jTextField3 = new javax.swing.JTextField();
jTextField4 = new javax.swing.JTextField();
jScrollPane3 = new javax.swing.JScrollPane();
jTextArea2 = new javax.swing.JTextArea();
jButton1 = new javax.swing.JButton();
jButton2 = new javax.swing.JButton();
jButton3 = new javax.swing.JButton();
jSeparator2 = new javax.swing.JSeparator();
jLabel7 = new javax.swing.JLabel();
jLabel8 = new javax.swing.JLabel();
jLabel9 = new javax.swing.JLabel();
jTextField5 = new javax.swing.JTextField();
jTextField6 = new javax.swing.JTextField();
jScrollPane4 = new javax.swing.JScrollPane();
jTextArea3 = new javax.swing.JTextArea();
jButton4 = new javax.swing.JButton();
jButton5 = new javax.swing.JButton();
jButton6 = new javax.swing.JButton();
jButton7 = new javax.swing.JButton();
jButton8 = new javax.swing.JButton();
jSeparator1 = new javax.swing.JSeparator();

jInternalFrame1.setVisible(true);

jLabel1.setFont(new java.awt.Font("Tahoma", 0, 14));
jLabel1.setForeground(new java.awt.Color(0, 0, 255));
jLabel1.setText("Primera Matriz");

jLabel2.setText("Numero de Filas");

jLabel3.setText("Numero de Columnas");

jLabel4.setFont(new java.awt.Font("Tahoma", 0, 14));
jLabel4.setForeground(new java.awt.Color(0, 0, 255));
jLabel4.setText("Segunda Matriz");

jLabel5.setText("Numero de Filas");

jLabel6.setText("Numero de Columnas");

jTextArea2.setColumns(20);
jTextArea2.setRows(5);
jScrollPane3.setViewportView(jTextArea2);

jButton1.setText("Suma");
jButton1.addActionListener(new java.awt.event.ActionListener() {
public void actionPerformed(java.awt.event.ActionEvent evt) {
jButton1ActionPerformed(evt);
}
});

jButton2.setText("Multiplicación");
jButton2.addActionListener(new java.awt.event.ActionListener() {
public void actionPerformed(java.awt.event.ActionEvent evt) {
jButton2ActionPerformed(evt);
}
});

jButton3.setText("Resta");
jButton3.addActionListener(new java.awt.event.ActionListener() {
public void actionPerformed(java.awt.event.ActionEvent evt) {
jButton3ActionPerformed(evt);
}
});

jLabel7.setFont(new java.awt.Font("Tahoma", 0, 14));
jLabel7.setForeground(new java.awt.Color(0, 0, 255));
jLabel7.setText("Matriz");

jLabel8.setText("Numero de Filas");

jLabel9.setText("Numero de Columnas");

jTextArea3.setColumns(20);
jTextArea3.setRows(5);
jScrollPane4.setViewportView(jTextArea3);

jButton4.setText("Traspuesta");
jButton4.addActionListener(new java.awt.event.ActionListener() {
public void actionPerformed(java.awt.event.ActionEvent evt) {
jButton4ActionPerformed(evt);
}
});

jButton5.setText("Inversa");
jButton5.addActionListener(new java.awt.event.ActionListener() {
public void actionPerformed(java.awt.event.ActionEvent evt) {
jButton5ActionPerformed(evt);
}
});

jButton6.setText("Limpiar");
jButton6.addActionListener(new java.awt.event.ActionListener() {
public void actionPerformed(java.awt.event.ActionEvent evt) {
jButton6ActionPerformed(evt);
}
});

jButton7.setText("Limpiar");
jButton7.addActionListener(new java.awt.event.ActionListener() {
public void actionPerformed(java.awt.event.ActionEvent evt) {
jButton7ActionPerformed(evt);
}
});

jButton8.setText("Determinante");
jButton8.addActionListener(new java.awt.event.ActionListener() {
public void actionPerformed(java.awt.event.ActionEvent evt) {
jButton8ActionPerformed(evt);
}
});

javax.swing.GroupLayout jPanel1Layout = new javax.swing.GroupLayout(jPanel1);
jPanel1.setLayout(jPanel1Layout);
jPanel1Layout.setHorizontalGroup(
jPanel1Layout.createParallelGroup(javax.swing.GroupLayout.Alignment.LEADING)
.addComponent(jSeparator2, javax.swing.GroupLayout.DEFAULT_SIZE, 626, Short.MAX_VALUE)
.addGroup(javax.swing.GroupLayout.Alignment.TRAILING, jPanel1Layout.createSequentialGroup()
.addContainerGap()
.addGroup(jPanel1Layout.createParallelGroup(javax.swing.GroupLayout.Alignment.LEADING)
.addComponent(jLabel1)
.addGroup(jPanel1Layout.createSequentialGroup()
.addGroup(jPanel1Layout.createParallelGroup(javax.swing.GroupLayout.Alignment.LEADING)
.addComponent(jLabel2, javax.swing.GroupLayout.PREFERRED_SIZE, 92, javax.swing.GroupLayout.PREFERRED_SIZE)
.addComponent(jLabel3)
.addComponent(jLabel6)
.addComponent(jLabel5))
.addGap(10, 10, 10)
.addGroup(jPanel1Layout.createParallelGroup(javax.swing.GroupLayout.Alignment.LEADING, false)
.addComponent(jTextField4)
.addComponent(jTextField3)
.addComponent(jTextField2)
.addComponent(jTextField1, javax.swing.GroupLayout.DEFAULT_SIZE, 82, Short.MAX_VALUE)))
.addComponent(jLabel4))
.addPreferredGap(javax.swing.LayoutStyle.ComponentPlacement.RELATED, 64, Short.MAX_VALUE)
.addGroup(jPanel1Layout.createParallelGroup(javax.swing.GroupLayout.Alignment.LEADING)
.addGroup(jPanel1Layout.createSequentialGroup()
.addComponent(jButton1)
.addPreferredGap(javax.swing.LayoutStyle.ComponentPlacement.RELATED)
.addComponent(jButton2)
.addPreferredGap(javax.swing.LayoutStyle.ComponentPlacement.RELATED)
.addComponent(jButton3))
.addComponent(jScrollPane3, javax.swing.GroupLayout.PREFERRED_SIZE, 227, javax.swing.GroupLayout.PREFERRED_SIZE))
.addPreferredGap(javax.swing.LayoutStyle.ComponentPlacement.RELATED, 8, Short.MAX_VALUE)
.addComponent(jButton6)
.addGap(59, 59, 59))
.addGroup(jPanel1Layout.createSequentialGroup()
.addContainerGap()
.addGroup(jPanel1Layout.createParallelGroup(javax.swing.GroupLayout.Alignment.LEADING)
.addComponent(jLabel7)
.addGroup(jPanel1Layout.createParallelGroup(javax.swing.GroupLayout.Alignment.TRAILING, false)
.addGroup(javax.swing.GroupLayout.Alignment.LEADING, jPanel1Layout.createSequentialGroup()
.addComponent(jLabel9)
.addPreferredGap(javax.swing.LayoutStyle.ComponentPlacement.UNRELATED)
.addComponent(jTextField6))
.addGroup(javax.swing.GroupLayout.Alignment.LEADING, jPanel1Layout.createSequentialGroup()
.addComponent(jLabel8)
.addGap(36, 36, 36)
.addComponent(jTextField5, javax.swing.GroupLayout.PREFERRED_SIZE, 81, javax.swing.GroupLayout.PREFERRED_SIZE))))
.addGap(57, 57, 57)
.addComponent(jScrollPane4, javax.swing.GroupLayout.PREFERRED_SIZE, 227, javax.swing.GroupLayout.PREFERRED_SIZE)
.addPreferredGap(javax.swing.LayoutStyle.ComponentPlacement.RELATED)
.addGroup(jPanel1Layout.createParallelGroup(javax.swing.GroupLayout.Alignment.LEADING, false)
.addComponent(jButton7, javax.swing.GroupLayout.DEFAULT_SIZE, javax.swing.GroupLayout.DEFAULT_SIZE, Short.MAX_VALUE)
.addComponent(jButton4, javax.swing.GroupLayout.DEFAULT_SIZE, javax.swing.GroupLayout.DEFAULT_SIZE, Short.MAX_VALUE)
.addComponent(jButton5, javax.swing.GroupLayout.DEFAULT_SIZE, javax.swing.GroupLayout.DEFAULT_SIZE, Short.MAX_VALUE)
.addComponent(jButton8, javax.swing.GroupLayout.DEFAULT_SIZE, javax.swing.GroupLayout.DEFAULT_SIZE, Short.MAX_VALUE))
.addContainerGap(36, Short.MAX_VALUE))
);
jPanel1Layout.setVerticalGroup(
jPanel1Layout.createParallelGroup(javax.swing.GroupLayout.Alignment.LEADING)
.addGroup(jPanel1Layout.createSequentialGroup()
.addGap(65, 65, 65)
.addGroup(jPanel1Layout.createParallelGroup(javax.swing.GroupLayout.Alignment.BASELINE)
.addComponent(jButton1)
.addComponent(jButton2)
.addComponent(jButton3))
.addGroup(jPanel1Layout.createParallelGroup(javax.swing.GroupLayout.Alignment.LEADING)
.addGroup(jPanel1Layout.createSequentialGroup()
.addPreferredGap(javax.swing.LayoutStyle.ComponentPlacement.RELATED)
.addComponent(jLabel1, javax.swing.GroupLayout.PREFERRED_SIZE, 34, javax.swing.GroupLayout.PREFERRED_SIZE)
.addPreferredGap(javax.swing.LayoutStyle.ComponentPlacement.RELATED)
.addGroup(jPanel1Layout.createParallelGroup(javax.swing.GroupLayout.Alignment.BASELINE)
.addComponent(jLabel2, javax.swing.GroupLayout.PREFERRED_SIZE, 29, javax.swing.GroupLayout.PREFERRED_SIZE)
.addComponent(jTextField1, javax.swing.GroupLayout.PREFERRED_SIZE, javax.swing.GroupLayout.DEFAULT_SIZE, javax.swing.GroupLayout.PREFERRED_SIZE))
.addPreferredGap(javax.swing.LayoutStyle.ComponentPlacement.RELATED)
.addGroup(jPanel1Layout.createParallelGroup(javax.swing.GroupLayout.Alignment.BASELINE)
.addComponent(jLabel3)
.addComponent(jTextField2, javax.swing.GroupLayout.PREFERRED_SIZE, javax.swing.GroupLayout.DEFAULT_SIZE, javax.swing.GroupLayout.PREFERRED_SIZE))
.addGap(24, 24, 24)
.addComponent(jLabel4)
.addPreferredGap(javax.swing.LayoutStyle.ComponentPlacement.RELATED)
.addGroup(jPanel1Layout.createParallelGroup(javax.swing.GroupLayout.Alignment.BASELINE)
.addComponent(jLabel5)
.addComponent(jTextField3, javax.swing.GroupLayout.PREFERRED_SIZE, javax.swing.GroupLayout.DEFAULT_SIZE, javax.swing.GroupLayout.PREFERRED_SIZE))
.addPreferredGap(javax.swing.LayoutStyle.ComponentPlacement.RELATED)
.addGroup(jPanel1Layout.createParallelGroup(javax.swing.GroupLayout.Alignment.BASELINE)
.addComponent(jLabel6)
.addComponent(jTextField4, javax.swing.GroupLayout.PREFERRED_SIZE, javax.swing.GroupLayout.DEFAULT_SIZE, javax.swing.GroupLayout.PREFERRED_SIZE)))
.addGroup(jPanel1Layout.createSequentialGroup()
.addGap(18, 18, 18)
.addGroup(jPanel1Layout.createParallelGroup(javax.swing.GroupLayout.Alignment.LEADING)
.addComponent(jScrollPane3, javax.swing.GroupLayout.PREFERRED_SIZE, 180, javax.swing.GroupLayout.PREFERRED_SIZE)
.addComponent(jButton6))))
.addGap(35, 35, 35)
.addComponent(jSeparator2, javax.swing.GroupLayout.PREFERRED_SIZE, 10, javax.swing.GroupLayout.PREFERRED_SIZE)
.addPreferredGap(javax.swing.LayoutStyle.ComponentPlacement.RELATED)
.addGroup(jPanel1Layout.createParallelGroup(javax.swing.GroupLayout.Alignment.LEADING)
.addGroup(jPanel1Layout.createSequentialGroup()
.addComponent(jLabel7)
.addGap(18, 18, 18)
.addGroup(jPanel1Layout.createParallelGroup(javax.swing.GroupLayout.Alignment.BASELINE)
.addComponent(jLabel8)
.addComponent(jTextField5, javax.swing.GroupLayout.PREFERRED_SIZE, javax.swing.GroupLayout.DEFAULT_SIZE, javax.swing.GroupLayout.PREFERRED_SIZE))
.addPreferredGap(javax.swing.LayoutStyle.ComponentPlacement.RELATED)
.addGroup(jPanel1Layout.createParallelGroup(javax.swing.GroupLayout.Alignment.BASELINE)
.addComponent(jLabel9)
.addComponent(jTextField6, javax.swing.GroupLayout.PREFERRED_SIZE, javax.swing.GroupLayout.DEFAULT_SIZE, javax.swing.GroupLayout.PREFERRED_SIZE)))
.addGroup(jPanel1Layout.createSequentialGroup()
.addComponent(jButton4)
.addPreferredGap(javax.swing.LayoutStyle.ComponentPlacement.UNRELATED)
.addComponent(jButton5)
.addPreferredGap(javax.swing.LayoutStyle.ComponentPlacement.UNRELATED)
.addComponent(jButton8)
.addPreferredGap(javax.swing.LayoutStyle.ComponentPlacement.UNRELATED)
.addComponent(jButton7))
.addComponent(jScrollPane4, javax.swing.GroupLayout.PREFERRED_SIZE, 164, javax.swing.GroupLayout.PREFERRED_SIZE))
.addContainerGap(32, Short.MAX_VALUE))
);

javax.swing.GroupLayout jInternalFrame1Layout = new javax.swing.GroupLayout(jInternalFrame1.getContentPane());
jInternalFrame1.getContentPane().setLayout(jInternalFrame1Layout);
jInternalFrame1Layout.setHorizontalGroup(
jInternalFrame1Layout.createParallelGroup(javax.swing.GroupLayout.Alignment.LEADING)
.addComponent(jPanel1, javax.swing.GroupLayout.DEFAULT_SIZE, javax.swing.GroupLayout.DEFAULT_SIZE, Short.MAX_VALUE)
.addComponent(jSeparator1, javax.swing.GroupLayout.DEFAULT_SIZE, 626, Short.MAX_VALUE)
);
jInternalFrame1Layout.setVerticalGroup(
jInternalFrame1Layout.createParallelGroup(javax.swing.GroupLayout.Alignment.LEADING)
.addGroup(jInternalFrame1Layout.createSequentialGroup()
.addComponent(jPanel1, javax.swing.GroupLayout.DEFAULT_SIZE, javax.swing.GroupLayout.DEFAULT_SIZE, Short.MAX_VALUE)
.addGap(186, 186, 186))
.addGroup(jInternalFrame1Layout.createSequentialGroup()
.addGap(335, 335, 335)
.addComponent(jSeparator1, javax.swing.GroupLayout.PREFERRED_SIZE, javax.swing.GroupLayout.DEFAULT_SIZE, javax.swing.GroupLayout.PREFERRED_SIZE)
.addContainerGap())
);

jScrollPane1.setViewportView(jInternalFrame1);

javax.swing.GroupLayout layout = new javax.swing.GroupLayout(getContentPane());
getContentPane().setLayout(layout);
layout.setHorizontalGroup(
layout.createParallelGroup(javax.swing.GroupLayout.Alignment.LEADING)
.addComponent(jScrollPane1, javax.swing.GroupLayout.DEFAULT_SIZE, 400, Short.MAX_VALUE)
);
layout.setVerticalGroup(
layout.createParallelGroup(javax.swing.GroupLayout.Alignment.LEADING)
.addComponent(jScrollPane1, javax.swing.GroupLayout.DEFAULT_SIZE, 300, Short.MAX_VALUE)
);
}//

private void jButton1ActionPerformed(java.awt.event.ActionEvent evt) {
// TODO add your handling code here:
String aux = jTextField1.getText();
String aux1="";
int nf = Integer.parseInt(aux);
aux = jTextField2.getText();
int nc = Integer.parseInt(aux);
m1 = new Matriz(nf,nc);
m1.leer();
aux1 += m1.toString();
aux = jTextField3.getText();
nf = Integer.parseInt(aux);
aux = jTextField4.getText();
nc = Integer.parseInt(aux);
m2 = new Matriz(nf,nc);
m2.leer();
aux1 += m2.toString();
jTextArea2.setText(aux1+(m1.suma(m2)).toString());
}

private void jButton2ActionPerformed(java.awt.event.ActionEvent evt) {
// TODO add your handling code here:

String aux = jTextField1.getText();
String aux1="";
int nf = Integer.parseInt(aux);
aux = jTextField2.getText();
int nc = Integer.parseInt(aux);
m1 = new Matriz(nf,nc);
m1.leer();
aux1 += m1.toString();
aux = jTextField3.getText();
nf = Integer.parseInt(aux);
aux = jTextField4.getText();
nc = Integer.parseInt(aux);
m2 = new Matriz(nf,nc);
m2.leer();
aux1 += m2.toString();
jTextArea2.setText(aux1+(m1.resta(m2)).toString());

}

private void jButton3ActionPerformed(java.awt.event.ActionEvent evt) {
// TODO add your handling code here:
String aux = jTextField1.getText();
String aux1="";
int nf = Integer.parseInt(aux);
aux = jTextField2.getText();
int nc = Integer.parseInt(aux);
m1 = new Matriz(nf,nc);
m1.leer();
aux1 += m1.toString();
aux = jTextField3.getText();
nf = Integer.parseInt(aux);
aux = jTextField4.getText();
nc = Integer.parseInt(aux);
m2 = new Matriz(nf,nc);
m2.leer();
aux1 += m2.toString();
jTextArea2.setText(aux1+(m1.Multiplicacion(m2)).toString());
}

private void jButton4ActionPerformed(java.awt.event.ActionEvent evt) {
// TODO add your handling code here:
String aux = jTextField5.getText();
String aux1="";
int nf = Integer.parseInt(aux);
aux = jTextField6.getText();
int nc = Integer.parseInt(aux);
m1 = new Matriz(nf,nc);
m1.leer();
aux1 += m1.toString();
jTextArea3.setText(aux1+(m1.Transpuesta()).toString());
}

private void jButton5ActionPerformed(java.awt.event.ActionEvent evt) {
// TODO add your handling code here:

String aux = jTextField5.getText();
String aux1="";
int nF = Integer.parseInt(aux);
aux = jTextField6.getText();
int nC = Integer.parseInt(aux);
m1 = new Matriz(nF,nC);
m1.leer();
aux1 += m1.toString();
jTextArea3.setText(aux1+(m1.inversa()).toString());
}

private void jButton6ActionPerformed(java.awt.event.ActionEvent evt) {
// TODO add your handling code here:
String aux = jTextField5.getText();
jTextArea2.setText("");
}

private void jButton7ActionPerformed(java.awt.event.ActionEvent evt) {
// TODO add your handling code here:
String aux = jTextField5.getText();
jTextArea3.setText("");
}

private void jButton8ActionPerformed(java.awt.event.ActionEvent evt) {
// TODO add your handling code here:

String aux = jTextField5.getText();
String aux1="";
int nF = Integer.parseInt(aux);
aux = jTextField6.getText();
int nC = Integer.parseInt(aux);
m1 = new Matriz(nF,nC);
m1.leer();
aux1 += m1.toString();
jTextArea3.setText(aux1+(m1.determinantes()).toString());


}
public Matriz m1;
public Matriz m2;
// Variables declaration - do not modify
private javax.swing.JButton jButton1;
private javax.swing.JButton jButton2;
private javax.swing.JButton jButton3;
private javax.swing.JButton jButton4;
private javax.swing.JButton jButton5;
private javax.swing.JButton jButton6;
private javax.swing.JButton jButton7;
private javax.swing.JButton jButton8;
private javax.swing.JInternalFrame jInternalFrame1;
private javax.swing.JLabel jLabel1;
private javax.swing.JLabel jLabel2;
private javax.swing.JLabel jLabel3;
private javax.swing.JLabel jLabel4;
private javax.swing.JLabel jLabel5;
private javax.swing.JLabel jLabel6;
private javax.swing.JLabel jLabel7;
private javax.swing.JLabel jLabel8;
private javax.swing.JLabel jLabel9;
private javax.swing.JPanel jPanel1;
private javax.swing.JScrollPane jScrollPane1;
private javax.swing.JScrollPane jScrollPane3;
private javax.swing.JScrollPane jScrollPane4;
private javax.swing.JSeparator jSeparator1;
private javax.swing.JSeparator jSeparator2;
private javax.swing.JTextArea jTextArea2;
private javax.swing.JTextArea jTextArea3;
private javax.swing.JTextField jTextField1;
private javax.swing.JTextField jTextField2;
private javax.swing.JTextField jTextField3;
private javax.swing.JTextField jTextField4;
private javax.swing.JTextField jTextField5;
private javax.swing.JTextField jTextField6;
// End of variables declaration

}

Operaciones con Matrices

Main.java

/*
* To change this template, choose Tools | Templates
* and open the template in the editor.
*/

package trabajo;

/**
*
* @author usuario
*/
public class Main {

/**
* @param args the command line arguments
*/
public static void main(String[] args) {
// TODO code application logic here
}

}

Matriz.java

/*
* To change this template, choose Tools | Templates
* and open the template in the editor.
*/

/**
*
* @author usuario
*/

import javax.swing.JOptionPane;
import java.text.DecimalFormat;

public class Matriz {

public int numerofilas;
public int numerocolumnas;
public double [][]matriz;

public Matriz(){
}

public Matriz(int nf, int nc){

numerofilas=nf;
numerocolumnas=nc;
matriz=new double[numerofilas][numerocolumnas];
for(int i=0;i < numerofilas;i++)
for(int j=0; j < numerocolumnas; j++)
matriz [i][j]=0;
}

public Matriz suma(Matriz b){
Matriz resultado;
if((this.numerofilas == b.numerofilas)&& (this.numerocolumnas == b.numerocolumnas)){
resultado = new Matriz(this.numerofilas, this.numerocolumnas);
for(int i=0; i < this.numerofilas; i++)
for(int j=0; j < this.numerocolumnas; j++)
resultado.matriz[i][j] = this.matriz[i][j]+ b.matriz[i][j];
return resultado;
}
else
System.out.println("Error en dimensiones de las matrices");
resultado=null;
return resultado;
}

public Matriz resta(Matriz b){
Matriz resultado;
if ((this.numerofilas == b.numerofilas)&(this.numerofilas == b.numerocolumnas)){
resultado = new Matriz (this.numerofilas,this.numerocolumnas);
for(int i = 0;i < this.numerofilas;i++)
for(int j=0;j < this.numerocolumnas;j++)
resultado.matriz[i][j] = this.matriz[i][j]-b.matriz[i][j];
return resultado;
}

else{
System.out.println("Error en dimensiones de las matrices");
resultado=null;
return resultado;
}
}

public Matriz Transpuesta(){
Matriz resultado;
resultado=new Matriz(this.numerocolumnas,this.numerofilas);
for(int i=0; i < this.numerofilas; i++)
for(int j=0; j < this.numerocolumnas; j++)
resultado.matriz[j][i]=this.matriz[i][j];
return resultado;
}

public Matriz Multiplicacion(Matriz b){
Matriz resultado;
if(this.numerocolumnas==b.numerofilas){
resultado=new Matriz(this.numerofilas, b.numerocolumnas);
for(int i=0; i < this.numerofilas; i++){
for(int j=0; j < b.numerocolumnas; j++){
for(int k=0; k < this.numerocolumnas; k++)
resultado.matriz[i][j]+=this.matriz[i][k]*b.matriz[k][j];
}
}
return resultado;
}
else
System.out.println("Error en dimensiones de las matrices");
resultado=null;
return resultado;
}

public Matriz inversa()
{
Matriz resultado = new Matriz ();
resultado.matriz[0][0]=((this.matriz[1][1]*this.matriz[2][2])-(this.matriz[2][1]*this.matriz[1][2]));
resultado.matriz[0][1]=((this.matriz[1][0]*this.matriz[2][2])-(this.matriz[2][0]*this.matriz[1][2]));
resultado.matriz[0][2]=((this.matriz[1][0]*this.matriz[2][1])-(this.matriz[2][0]*this.matriz[1][1]));
resultado.matriz[1][0]=((this.matriz[0][1]*this.matriz[2][2])-(this.matriz[2][1]*this.matriz[0][2]));
resultado.matriz[1][1]=((this.matriz[1][0]*this.matriz[2][2])-(this.matriz[2][0]*this.matriz[1][2]));
resultado.matriz[1][2]=((this.matriz[0][0]*this.matriz[2][1])-(this.matriz[2][0]*this.matriz[0][1]));
resultado.matriz[2][0]=((this.matriz[0][1]*this.matriz[1][2])-(this.matriz[1][1]*this.matriz[0][2]));
resultado.matriz[2][1]=((this.matriz[0][0]*this.matriz[1][2])-(this.matriz[1][0]*this.matriz[0][2]));
resultado.matriz[2][2]=((this.matriz[0][0]*this.matriz[1][1])-(this.matriz[1][0]*this.matriz[0][1]));
return resultado;
}

public void leer(){
String aux;
for(int i=0; i < this.numerofilas; i++){
for(int j=0; j < this.numerocolumnas; j++){
aux = JOptionPane.showInputDialog(null,"Valores de la Matriz"+(i+1)+","+(j+1),JOptionPane.DEFAULT_OPTION);
this.matriz[i][j]=Double.parseDouble(aux);
}
}
}

public String toString(){

String aux="\n";
DecimalFormat df = new DecimalFormat("0.0000");
for(int i=0; i < numerofilas; i++){
for(int j=0; j < numerocolumnas; j++){
aux+=df.format(matriz[i][j])+" ";
}
aux+="\n";
}
aux+=" ";
return aux;
}
}

OperacionesMatriz.java

/*
* To change this template, choose Tools | Templates
* and open the template in the editor.
*/

/*
* OperacionesMatrices.java
*
* Created on 12-ene-2010, 19:29:29
*/

/**
*
* @author usuario
*/
public class OperacionesMatrices extends javax.swing.JApplet {

/** Initializes the applet OperacionesMatrices */
public void init() {
try {
java.awt.EventQueue.invokeAndWait(new Runnable() {
public void run() {
initComponents();
}
});
} catch (Exception ex) {
ex.printStackTrace();
}
}

/** This method is called from within the init() method to
* initialize the form.
* WARNING: Do NOT modify this code. The content of this method is
* always regenerated by the Form Editor.
*/
@SuppressWarnings("unchecked")
//
private void initComponents() {

jScrollPane1 = new javax.swing.JScrollPane();
jInternalFrame1 = new javax.swing.JInternalFrame();
jPanel1 = new javax.swing.JPanel();
jLabel1 = new javax.swing.JLabel();
jLabel2 = new javax.swing.JLabel();
jLabel3 = new javax.swing.JLabel();
jLabel4 = new javax.swing.JLabel();
jTextField1 = new javax.swing.JTextField();
jTextField2 = new javax.swing.JTextField();
jLabel5 = new javax.swing.JLabel();
jLabel6 = new javax.swing.JLabel();
jTextField3 = new javax.swing.JTextField();
jTextField4 = new javax.swing.JTextField();
jScrollPane3 = new javax.swing.JScrollPane();
jTextArea2 = new javax.swing.JTextArea();
jButton1 = new javax.swing.JButton();
jButton2 = new javax.swing.JButton();
jButton3 = new javax.swing.JButton();
jSeparator2 = new javax.swing.JSeparator();
jLabel7 = new javax.swing.JLabel();
jLabel8 = new javax.swing.JLabel();
jLabel9 = new javax.swing.JLabel();
jTextField5 = new javax.swing.JTextField();
jTextField6 = new javax.swing.JTextField();
jScrollPane4 = new javax.swing.JScrollPane();
jTextArea3 = new javax.swing.JTextArea();
jButton4 = new javax.swing.JButton();
jButton5 = new javax.swing.JButton();
jButton6 = new javax.swing.JButton();
jButton7 = new javax.swing.JButton();
jSeparator1 = new javax.swing.JSeparator();

jInternalFrame1.setVisible(true);

jLabel1.setFont(new java.awt.Font("Tahoma", 0, 14)); // NOI18N
jLabel1.setForeground(new java.awt.Color(0, 0, 255));
jLabel1.setText("Primera Matriz");

jLabel2.setText("Numero de Filas");

jLabel3.setText("Numero de Columnas");

jLabel4.setFont(new java.awt.Font("Tahoma", 0, 14)); // NOI18N
jLabel4.setForeground(new java.awt.Color(0, 0, 255));
jLabel4.setText("Segunda Matriz");

jLabel5.setText("Numero de Filas");

jLabel6.setText("Numero de Columnas");

jTextArea2.setColumns(20);
jTextArea2.setRows(5);
jScrollPane3.setViewportView(jTextArea2);

jButton1.setText("Suma");
jButton1.addActionListener(new java.awt.event.ActionListener() {
public void actionPerformed(java.awt.event.ActionEvent evt) {
jButton1ActionPerformed(evt);
}
});

jButton2.setText("Multiplicación");
jButton2.addActionListener(new java.awt.event.ActionListener() {
public void actionPerformed(java.awt.event.ActionEvent evt) {
jButton2ActionPerformed(evt);
}
});

jButton3.setText("Resta");
jButton3.addActionListener(new java.awt.event.ActionListener() {
public void actionPerformed(java.awt.event.ActionEvent evt) {
jButton3ActionPerformed(evt);
}
});

jLabel7.setFont(new java.awt.Font("Tahoma", 0, 14)); // NOI18N
jLabel7.setForeground(new java.awt.Color(0, 0, 255));
jLabel7.setText("Matriz");

jLabel8.setText("Numero de Filas");

jLabel9.setText("Numero de Columnas");

jTextArea3.setColumns(20);
jTextArea3.setRows(5);
jScrollPane4.setViewportView(jTextArea3);

jButton4.setText("Traspuesta");
jButton4.addActionListener(new java.awt.event.ActionListener() {
public void actionPerformed(java.awt.event.ActionEvent evt) {
jButton4ActionPerformed(evt);
}
});

jButton5.setText("Inversa");
jButton5.addActionListener(new java.awt.event.ActionListener() {
public void actionPerformed(java.awt.event.ActionEvent evt) {
jButton5ActionPerformed(evt);
}
});

jButton6.setText("Limpiar");
jButton6.addActionListener(new java.awt.event.ActionListener() {
public void actionPerformed(java.awt.event.ActionEvent evt) {
jButton6ActionPerformed(evt);
}
});

jButton7.setText("Limpiar");
jButton7.addActionListener(new java.awt.event.ActionListener() {
public void actionPerformed(java.awt.event.ActionEvent evt) {
jButton7ActionPerformed(evt);
}
});

javax.swing.GroupLayout jPanel1Layout = new javax.swing.GroupLayout(jPanel1);
jPanel1.setLayout(jPanel1Layout);
jPanel1Layout.setHorizontalGroup(
jPanel1Layout.createParallelGroup(javax.swing.GroupLayout.Alignment.LEADING)
.addComponent(jSeparator2, javax.swing.GroupLayout.DEFAULT_SIZE, 626, Short.MAX_VALUE)
.addGroup(javax.swing.GroupLayout.Alignment.TRAILING, jPanel1Layout.createSequentialGroup()
.addContainerGap()
.addGroup(jPanel1Layout.createParallelGroup(javax.swing.GroupLayout.Alignment.LEADING)
.addComponent(jLabel1)
.addGroup(jPanel1Layout.createSequentialGroup()
.addGroup(jPanel1Layout.createParallelGroup(javax.swing.GroupLayout.Alignment.LEADING)
.addComponent(jLabel2, javax.swing.GroupLayout.PREFERRED_SIZE, 92, javax.swing.GroupLayout.PREFERRED_SIZE)
.addComponent(jLabel3)
.addComponent(jLabel6)
.addComponent(jLabel5))
.addGap(10, 10, 10)
.addGroup(jPanel1Layout.createParallelGroup(javax.swing.GroupLayout.Alignment.LEADING, false)
.addComponent(jTextField4)
.addComponent(jTextField3)
.addComponent(jTextField2)
.addComponent(jTextField1, javax.swing.GroupLayout.DEFAULT_SIZE, 82, Short.MAX_VALUE)))
.addComponent(jLabel4))
.addPreferredGap(javax.swing.LayoutStyle.ComponentPlacement.RELATED, 64, Short.MAX_VALUE)
.addGroup(jPanel1Layout.createParallelGroup(javax.swing.GroupLayout.Alignment.LEADING)
.addGroup(jPanel1Layout.createSequentialGroup()
.addComponent(jButton1)
.addPreferredGap(javax.swing.LayoutStyle.ComponentPlacement.RELATED)
.addComponent(jButton2)
.addPreferredGap(javax.swing.LayoutStyle.ComponentPlacement.RELATED)
.addComponent(jButton3))
.addComponent(jScrollPane3, javax.swing.GroupLayout.PREFERRED_SIZE, 227, javax.swing.GroupLayout.PREFERRED_SIZE))
.addPreferredGap(javax.swing.LayoutStyle.ComponentPlacement.RELATED, 8, Short.MAX_VALUE)
.addComponent(jButton6)
.addGap(59, 59, 59))
.addGroup(jPanel1Layout.createSequentialGroup()
.addContainerGap()
.addGroup(jPanel1Layout.createParallelGroup(javax.swing.GroupLayout.Alignment.LEADING)
.addComponent(jLabel7)
.addGroup(jPanel1Layout.createParallelGroup(javax.swing.GroupLayout.Alignment.TRAILING, false)
.addGroup(javax.swing.GroupLayout.Alignment.LEADING, jPanel1Layout.createSequentialGroup()
.addComponent(jLabel9)
.addPreferredGap(javax.swing.LayoutStyle.ComponentPlacement.UNRELATED)
.addComponent(jTextField6))
.addGroup(javax.swing.GroupLayout.Alignment.LEADING, jPanel1Layout.createSequentialGroup()
.addComponent(jLabel8)
.addGap(36, 36, 36)
.addComponent(jTextField5, javax.swing.GroupLayout.PREFERRED_SIZE, 81, javax.swing.GroupLayout.PREFERRED_SIZE))))
.addGap(57, 57, 57)
.addComponent(jScrollPane4, javax.swing.GroupLayout.PREFERRED_SIZE, 227, javax.swing.GroupLayout.PREFERRED_SIZE)
.addPreferredGap(javax.swing.LayoutStyle.ComponentPlacement.RELATED)
.addGroup(jPanel1Layout.createParallelGroup(javax.swing.GroupLayout.Alignment.LEADING, false)
.addComponent(jButton7, javax.swing.GroupLayout.DEFAULT_SIZE, javax.swing.GroupLayout.DEFAULT_SIZE, Short.MAX_VALUE)
.addComponent(jButton4, javax.swing.GroupLayout.DEFAULT_SIZE, javax.swing.GroupLayout.DEFAULT_SIZE, Short.MAX_VALUE)
.addComponent(jButton5, javax.swing.GroupLayout.DEFAULT_SIZE, javax.swing.GroupLayout.DEFAULT_SIZE, Short.MAX_VALUE))
.addContainerGap(46, Short.MAX_VALUE))
);
jPanel1Layout.setVerticalGroup(
jPanel1Layout.createParallelGroup(javax.swing.GroupLayout.Alignment.LEADING)
.addGroup(jPanel1Layout.createSequentialGroup()
.addGap(65, 65, 65)
.addGroup(jPanel1Layout.createParallelGroup(javax.swing.GroupLayout.Alignment.BASELINE)
.addComponent(jButton1)
.addComponent(jButton2)
.addComponent(jButton3))
.addGroup(jPanel1Layout.createParallelGroup(javax.swing.GroupLayout.Alignment.LEADING)
.addGroup(jPanel1Layout.createSequentialGroup()
.addPreferredGap(javax.swing.LayoutStyle.ComponentPlacement.RELATED)
.addComponent(jLabel1, javax.swing.GroupLayout.PREFERRED_SIZE, 34, javax.swing.GroupLayout.PREFERRED_SIZE)
.addPreferredGap(javax.swing.LayoutStyle.ComponentPlacement.RELATED)
.addGroup(jPanel1Layout.createParallelGroup(javax.swing.GroupLayout.Alignment.BASELINE)
.addComponent(jLabel2, javax.swing.GroupLayout.PREFERRED_SIZE, 29, javax.swing.GroupLayout.PREFERRED_SIZE)
.addComponent(jTextField1, javax.swing.GroupLayout.PREFERRED_SIZE, javax.swing.GroupLayout.DEFAULT_SIZE, javax.swing.GroupLayout.PREFERRED_SIZE))
.addPreferredGap(javax.swing.LayoutStyle.ComponentPlacement.RELATED)
.addGroup(jPanel1Layout.createParallelGroup(javax.swing.GroupLayout.Alignment.BASELINE)
.addComponent(jLabel3)
.addComponent(jTextField2, javax.swing.GroupLayout.PREFERRED_SIZE, javax.swing.GroupLayout.DEFAULT_SIZE, javax.swing.GroupLayout.PREFERRED_SIZE))
.addGap(24, 24, 24)
.addComponent(jLabel4)
.addPreferredGap(javax.swing.LayoutStyle.ComponentPlacement.RELATED)
.addGroup(jPanel1Layout.createParallelGroup(javax.swing.GroupLayout.Alignment.BASELINE)
.addComponent(jLabel5)
.addComponent(jTextField3, javax.swing.GroupLayout.PREFERRED_SIZE, javax.swing.GroupLayout.DEFAULT_SIZE, javax.swing.GroupLayout.PREFERRED_SIZE))
.addPreferredGap(javax.swing.LayoutStyle.ComponentPlacement.RELATED)
.addGroup(jPanel1Layout.createParallelGroup(javax.swing.GroupLayout.Alignment.BASELINE)
.addComponent(jLabel6)
.addComponent(jTextField4, javax.swing.GroupLayout.PREFERRED_SIZE, javax.swing.GroupLayout.DEFAULT_SIZE, javax.swing.GroupLayout.PREFERRED_SIZE)))
.addGroup(jPanel1Layout.createSequentialGroup()
.addGap(18, 18, 18)
.addGroup(jPanel1Layout.createParallelGroup(javax.swing.GroupLayout.Alignment.LEADING)
.addComponent(jScrollPane3, javax.swing.GroupLayout.PREFERRED_SIZE, 180, javax.swing.GroupLayout.PREFERRED_SIZE)
.addComponent(jButton6))))
.addGap(35, 35, 35)
.addComponent(jSeparator2, javax.swing.GroupLayout.PREFERRED_SIZE, 10, javax.swing.GroupLayout.PREFERRED_SIZE)
.addPreferredGap(javax.swing.LayoutStyle.ComponentPlacement.RELATED)
.addGroup(jPanel1Layout.createParallelGroup(javax.swing.GroupLayout.Alignment.LEADING)
.addGroup(jPanel1Layout.createSequentialGroup()
.addComponent(jLabel7)
.addGap(18, 18, 18)
.addGroup(jPanel1Layout.createParallelGroup(javax.swing.GroupLayout.Alignment.BASELINE)
.addComponent(jLabel8)
.addComponent(jTextField5, javax.swing.GroupLayout.PREFERRED_SIZE, javax.swing.GroupLayout.DEFAULT_SIZE, javax.swing.GroupLayout.PREFERRED_SIZE))
.addPreferredGap(javax.swing.LayoutStyle.ComponentPlacement.RELATED)
.addGroup(jPanel1Layout.createParallelGroup(javax.swing.GroupLayout.Alignment.BASELINE)
.addComponent(jLabel9)
.addComponent(jTextField6, javax.swing.GroupLayout.PREFERRED_SIZE, javax.swing.GroupLayout.DEFAULT_SIZE, javax.swing.GroupLayout.PREFERRED_SIZE)))
.addGroup(jPanel1Layout.createSequentialGroup()
.addComponent(jButton4)
.addPreferredGap(javax.swing.LayoutStyle.ComponentPlacement.UNRELATED)
.addComponent(jButton5)
.addPreferredGap(javax.swing.LayoutStyle.ComponentPlacement.RELATED)
.addComponent(jButton7))
.addComponent(jScrollPane4, javax.swing.GroupLayout.PREFERRED_SIZE, 164, javax.swing.GroupLayout.PREFERRED_SIZE))
.addContainerGap(24, Short.MAX_VALUE))
);

javax.swing.GroupLayout jInternalFrame1Layout = new javax.swing.GroupLayout(jInternalFrame1.getContentPane());
jInternalFrame1.getContentPane().setLayout(jInternalFrame1Layout);
jInternalFrame1Layout.setHorizontalGroup(
jInternalFrame1Layout.createParallelGroup(javax.swing.GroupLayout.Alignment.LEADING)
.addComponent(jPanel1, javax.swing.GroupLayout.DEFAULT_SIZE, javax.swing.GroupLayout.DEFAULT_SIZE, Short.MAX_VALUE)
.addComponent(jSeparator1, javax.swing.GroupLayout.DEFAULT_SIZE, 626, Short.MAX_VALUE)
);
jInternalFrame1Layout.setVerticalGroup(
jInternalFrame1Layout.createParallelGroup(javax.swing.GroupLayout.Alignment.LEADING)
.addGroup(jInternalFrame1Layout.createSequentialGroup()
.addComponent(jPanel1, javax.swing.GroupLayout.DEFAULT_SIZE, javax.swing.GroupLayout.DEFAULT_SIZE, Short.MAX_VALUE)
.addGap(186, 186, 186))
.addGroup(jInternalFrame1Layout.createSequentialGroup()
.addGap(335, 335, 335)
.addComponent(jSeparator1, javax.swing.GroupLayout.PREFERRED_SIZE, javax.swing.GroupLayout.DEFAULT_SIZE, javax.swing.GroupLayout.PREFERRED_SIZE)
.addContainerGap())
);

jScrollPane1.setViewportView(jInternalFrame1);

javax.swing.GroupLayout layout = new javax.swing.GroupLayout(getContentPane());
getContentPane().setLayout(layout);
layout.setHorizontalGroup(
layout.createParallelGroup(javax.swing.GroupLayout.Alignment.LEADING)
.addComponent(jScrollPane1, javax.swing.GroupLayout.DEFAULT_SIZE, 400, Short.MAX_VALUE)
);
layout.setVerticalGroup(
layout.createParallelGroup(javax.swing.GroupLayout.Alignment.LEADING)
.addComponent(jScrollPane1, javax.swing.GroupLayout.DEFAULT_SIZE, 300, Short.MAX_VALUE)
);
}//

private void jButton1ActionPerformed(java.awt.event.ActionEvent evt) {
// TODO add your handling code here:
String aux = jTextField1.getText();
String aux1="";
int nf = Integer.parseInt(aux);
aux = jTextField2.getText();
int nc = Integer.parseInt(aux);
m1 = new Matriz(nf,nc);
m1.leer();
aux1 += m1.toString();
aux = jTextField3.getText();
nf = Integer.parseInt(aux);
aux = jTextField4.getText();
nc = Integer.parseInt(aux);
m2 = new Matriz(nf,nc);
m2.leer();
aux1 += m2.toString();
jTextArea2.setText(aux1+(m1.suma(m2)).toString());
}

private void jButton2ActionPerformed(java.awt.event.ActionEvent evt) {
// TODO add your handling code here:

String aux = jTextField1.getText();
String aux1="";
int nf = Integer.parseInt(aux);
aux = jTextField2.getText();
int nc = Integer.parseInt(aux);
m1 = new Matriz(nf,nc);
m1.leer();
aux1 += m1.toString();
aux = jTextField3.getText();
nf = Integer.parseInt(aux);
aux = jTextField4.getText();
nc = Integer.parseInt(aux);
m2 = new Matriz(nf,nc);
m2.leer();
aux1 += m2.toString();
jTextArea2.setText(aux1+(m1.resta(m2)).toString());

}

private void jButton3ActionPerformed(java.awt.event.ActionEvent evt) {
// TODO add your handling code here:
String aux = jTextField1.getText();
String aux1="";
int nf = Integer.parseInt(aux);
aux = jTextField2.getText();
int nc = Integer.parseInt(aux);
m1 = new Matriz(nf,nc);
m1.leer();
aux1 += m1.toString();
aux = jTextField3.getText();
nf = Integer.parseInt(aux);
aux = jTextField4.getText();
nc = Integer.parseInt(aux);
m2 = new Matriz(nf,nc);
m2.leer();
aux1 += m2.toString();
jTextArea2.setText(aux1+(m1.Multiplicacion(m2)).toString());
}

private void jButton4ActionPerformed(java.awt.event.ActionEvent evt) {
// TODO add your handling code here:
String aux = jTextField5.getText();
String aux1="";
int nf = Integer.parseInt(aux);
aux = jTextField6.getText();
int nc = Integer.parseInt(aux);
m1 = new Matriz(nf,nc);
m1.leer();
aux1 += m1.toString();
jTextArea3.setText(aux1+(m1.Transpuesta()).toString());
}

private void jButton5ActionPerformed(java.awt.event.ActionEvent evt) {
// TODO add your handling code here:

String aux = jTextField5.getText();
String aux1="";
int nF = Integer.parseInt(aux);
aux = jTextField6.getText();
int nC = Integer.parseInt(aux);
m1 = new Matriz(nF,nC);
m1.leer();
aux1 += m1.toString();
jTextArea3.setText(aux1+(m1.inversa()).toString());
}

private void jButton6ActionPerformed(java.awt.event.ActionEvent evt) {
// TODO add your handling code here:
String aux = jTextField5.getText();
jTextArea2.setText("");
}

private void jButton7ActionPerformed(java.awt.event.ActionEvent evt) {
// TODO add your handling code here:
String aux = jTextField5.getText();
jTextArea3.setText("");
}
public Matriz m1;
public Matriz m2;
// Variables declaration - do not modify
private javax.swing.JButton jButton1;
private javax.swing.JButton jButton2;
private javax.swing.JButton jButton3;
private javax.swing.JButton jButton4;
private javax.swing.JButton jButton5;
private javax.swing.JButton jButton6;
private javax.swing.JButton jButton7;
private javax.swing.JInternalFrame jInternalFrame1;
private javax.swing.JLabel jLabel1;
private javax.swing.JLabel jLabel2;
private javax.swing.JLabel jLabel3;
private javax.swing.JLabel jLabel4;
private javax.swing.JLabel jLabel5;
private javax.swing.JLabel jLabel6;
private javax.swing.JLabel jLabel7;
private javax.swing.JLabel jLabel8;
private javax.swing.JLabel jLabel9;
private javax.swing.JPanel jPanel1;
private javax.swing.JScrollPane jScrollPane1;
private javax.swing.JScrollPane jScrollPane3;
private javax.swing.JScrollPane jScrollPane4;
private javax.swing.JSeparator jSeparator1;
private javax.swing.JSeparator jSeparator2;
private javax.swing.JTextArea jTextArea2;
private javax.swing.JTextArea jTextArea3;
private javax.swing.JTextField jTextField1;
private javax.swing.JTextField jTextField2;
private javax.swing.JTextField jTextField3;
private javax.swing.JTextField jTextField4;
private javax.swing.JTextField jTextField5;
private javax.swing.JTextField jTextField6;
// End of variables declaration

}

Calculadora en java

Main. java

/*
* To change this template, choose Tools | Templates
* and open the template in the editor.
*/

package trabajo;

/**
*
* @author program
*/
public class Main {

/**
* @param args the command line arguments
*/
public static void main(String[] args) {
// TODO code application logic here
}

}

Operaciones.java

/*
* To change this template, choose Tools | Templates
* and open the template in the editor.
*/

/**
*
* @author program
*/
public class Operaciones {

static double resultado;
public Operaciones(){
resultado = 0;
}

public static double seno(double x){
resultado = Math.sin(x);
return resultado;
}

public static double coseno(double x){
resultado = Math.cos(x);
return resultado;
}

public static double tangente(double x){
resultado = Math.tan(x);
return resultado;
}

public static double logaritmo(double x){
if(x==0){
System.out.println("ERROR");
resultado = 0;
}else{
resultado = Math.log(x);
}
return resultado;
}

public static double raiz(double x){
if(x>=0){
resultado = Math.sqrt(x);
}else{
System.out.println("ERROR");
resultado = 0;
}
return resultado;

}

public static double suma(double x, double y){

resultado = x+y;
return resultado;
}

public static double resta(double x, double y){

resultado = x-y;
return resultado;
}

public static double multiplicacion(double x, double y){
resultado = x*y;
return resultado;
}

public static double division(double x, double y){
resultado = x/y;
return resultado;
}

}

Calculadora. java (Applet)

/*
* To change this template, choose Tools | Templates
* and open the template in the editor.
*/

/*
* Calculadora.java
*
* Created on 12-ene-2010, 16:23:35
*/

/**
*
* @author program
*/
public class Calculadora extends javax.swing.JApplet {

/** Initializes the applet Calculadora */
public void init() {
try {
java.awt.EventQueue.invokeAndWait(new Runnable() {
public void run() {
initComponents();
}
});
} catch (Exception ex) {
ex.printStackTrace();
}
}

/** This method is called from within the init() method to
* initialize the form.
* WARNING: Do NOT modify this code. The content of this method is
* always regenerated by the Form Editor.
*/
@SuppressWarnings("unchecked")
//
private void initComponents() {

jScrollPane1 = new javax.swing.JScrollPane();
jPanel1 = new javax.swing.JPanel();
jInternalFrame1 = new javax.swing.JInternalFrame();
jTextField1 = new javax.swing.JTextField();
jButton1 = new javax.swing.JButton();
jButton2 = new javax.swing.JButton();
jButton3 = new javax.swing.JButton();
jButton4 = new javax.swing.JButton();
jButton5 = new javax.swing.JButton();
jButton6 = new javax.swing.JButton();
jButton7 = new javax.swing.JButton();
jButton8 = new javax.swing.JButton();
jButton9 = new javax.swing.JButton();
jButton10 = new javax.swing.JButton();
jButton11 = new javax.swing.JButton();
jButton12 = new javax.swing.JButton();
jButton13 = new javax.swing.JButton();
jButton15 = new javax.swing.JButton();
jButton14 = new javax.swing.JButton();
jButton16 = new javax.swing.JButton();
jButton17 = new javax.swing.JButton();
jButton18 = new javax.swing.JButton();
jButton19 = new javax.swing.JButton();
jButton20 = new javax.swing.JButton();
jButton21 = new javax.swing.JButton();
jButton22 = new javax.swing.JButton();

jInternalFrame1.setVisible(true);

javax.swing.GroupLayout jInternalFrame1Layout = new javax.swing.GroupLayout(jInternalFrame1.getContentPane());
jInternalFrame1.getContentPane().setLayout(jInternalFrame1Layout);
jInternalFrame1Layout.setHorizontalGroup(
jInternalFrame1Layout.createParallelGroup(javax.swing.GroupLayout.Alignment.LEADING)
.addGap(0, 512, Short.MAX_VALUE)
);
jInternalFrame1Layout.setVerticalGroup(
jInternalFrame1Layout.createParallelGroup(javax.swing.GroupLayout.Alignment.LEADING)
.addGap(0, 0, Short.MAX_VALUE)
);

jButton1.setText("7");
jButton1.addActionListener(new java.awt.event.ActionListener() {
public void actionPerformed(java.awt.event.ActionEvent evt) {
jButton1ActionPerformed(evt);
}
});

jButton2.setText("4");
jButton2.addActionListener(new java.awt.event.ActionListener() {
public void actionPerformed(java.awt.event.ActionEvent evt) {
jButton2ActionPerformed(evt);
}
});

jButton3.setText("1");
jButton3.addActionListener(new java.awt.event.ActionListener() {
public void actionPerformed(java.awt.event.ActionEvent evt) {
jButton3ActionPerformed(evt);
}
});

jButton4.setText("8");
jButton4.addActionListener(new java.awt.event.ActionListener() {
public void actionPerformed(java.awt.event.ActionEvent evt) {
jButton4ActionPerformed(evt);
}
});

jButton5.setText("5");
jButton5.addActionListener(new java.awt.event.ActionListener() {
public void actionPerformed(java.awt.event.ActionEvent evt) {
jButton5ActionPerformed(evt);
}
});

jButton6.setText("2");
jButton6.addActionListener(new java.awt.event.ActionListener() {
public void actionPerformed(java.awt.event.ActionEvent evt) {
jButton6ActionPerformed(evt);
}
});

jButton7.setText("9");
jButton7.addActionListener(new java.awt.event.ActionListener() {
public void actionPerformed(java.awt.event.ActionEvent evt) {
jButton7ActionPerformed(evt);
}
});

jButton8.setText("6");
jButton8.addActionListener(new java.awt.event.ActionListener() {
public void actionPerformed(java.awt.event.ActionEvent evt) {
jButton8ActionPerformed(evt);
}
});

jButton9.setText("3");
jButton9.addActionListener(new java.awt.event.ActionListener() {
public void actionPerformed(java.awt.event.ActionEvent evt) {
jButton9ActionPerformed(evt);
}
});

jButton10.setText("0");
jButton10.addActionListener(new java.awt.event.ActionListener() {
public void actionPerformed(java.awt.event.ActionEvent evt) {
jButton10ActionPerformed(evt);
}
});

jButton11.setText(".");
jButton11.addActionListener(new java.awt.event.ActionListener() {
public void actionPerformed(java.awt.event.ActionEvent evt) {
jButton11ActionPerformed(evt);
}
});

jButton12.setText("+");
jButton12.addActionListener(new java.awt.event.ActionListener() {
public void actionPerformed(java.awt.event.ActionEvent evt) {
jButton12ActionPerformed(evt);
}
});

jButton13.setText("-");
jButton13.addActionListener(new java.awt.event.ActionListener() {
public void actionPerformed(java.awt.event.ActionEvent evt) {
jButton13ActionPerformed(evt);
}
});

jButton15.setText("/");
jButton15.addActionListener(new java.awt.event.ActionListener() {
public void actionPerformed(java.awt.event.ActionEvent evt) {
jButton15ActionPerformed(evt);
}
});

jButton14.setText("*");
jButton14.addActionListener(new java.awt.event.ActionListener() {
public void actionPerformed(java.awt.event.ActionEvent evt) {
jButton14ActionPerformed(evt);
}
});

jButton16.setText("Sen");
jButton16.addActionListener(new java.awt.event.ActionListener() {
public void actionPerformed(java.awt.event.ActionEvent evt) {
jButton16ActionPerformed(evt);
}
});

jButton17.setText("Cos");
jButton17.addActionListener(new java.awt.event.ActionListener() {
public void actionPerformed(java.awt.event.ActionEvent evt) {
jButton17ActionPerformed(evt);
}
});

jButton18.setText("Tan");
jButton18.addActionListener(new java.awt.event.ActionListener() {
public void actionPerformed(java.awt.event.ActionEvent evt) {
jButton18ActionPerformed(evt);
}
});

jButton19.setText("Log");
jButton19.addActionListener(new java.awt.event.ActionListener() {
public void actionPerformed(java.awt.event.ActionEvent evt) {
jButton19ActionPerformed(evt);
}
});

jButton20.setText("Raiz");
jButton20.addActionListener(new java.awt.event.ActionListener() {
public void actionPerformed(java.awt.event.ActionEvent evt) {
jButton20ActionPerformed(evt);
}
});

jButton21.setText("Exp");
jButton21.addActionListener(new java.awt.event.ActionListener() {
public void actionPerformed(java.awt.event.ActionEvent evt) {
jButton21ActionPerformed(evt);
}
});

jButton22.setText("CE");
jButton22.addActionListener(new java.awt.event.ActionListener() {
public void actionPerformed(java.awt.event.ActionEvent evt) {
jButton22ActionPerformed(evt);
}
});

javax.swing.GroupLayout jPanel1Layout = new javax.swing.GroupLayout(jPanel1);
jPanel1.setLayout(jPanel1Layout);
jPanel1Layout.setHorizontalGroup(
jPanel1Layout.createParallelGroup(javax.swing.GroupLayout.Alignment.LEADING)
.addComponent(jInternalFrame1)
.addGroup(javax.swing.GroupLayout.Alignment.TRAILING, jPanel1Layout.createSequentialGroup()
.addContainerGap()
.addComponent(jTextField1, javax.swing.GroupLayout.DEFAULT_SIZE, 498, Short.MAX_VALUE)
.addGap(10, 10, 10))
.addGroup(jPanel1Layout.createSequentialGroup()
.addContainerGap()
.addGroup(jPanel1Layout.createParallelGroup(javax.swing.GroupLayout.Alignment.TRAILING, false)
.addGroup(javax.swing.GroupLayout.Alignment.LEADING, jPanel1Layout.createSequentialGroup()
.addGroup(jPanel1Layout.createParallelGroup(javax.swing.GroupLayout.Alignment.LEADING, false)
.addGroup(jPanel1Layout.createSequentialGroup()
.addComponent(jButton3)
.addPreferredGap(javax.swing.LayoutStyle.ComponentPlacement.RELATED)
.addComponent(jButton6))
.addComponent(jButton10, javax.swing.GroupLayout.Alignment.TRAILING, javax.swing.GroupLayout.DEFAULT_SIZE, javax.swing.GroupLayout.DEFAULT_SIZE, Short.MAX_VALUE))
.addPreferredGap(javax.swing.LayoutStyle.ComponentPlacement.RELATED)
.addGroup(jPanel1Layout.createParallelGroup(javax.swing.GroupLayout.Alignment.LEADING, false)
.addComponent(jButton11, javax.swing.GroupLayout.DEFAULT_SIZE, javax.swing.GroupLayout.DEFAULT_SIZE, Short.MAX_VALUE)
.addComponent(jButton9, javax.swing.GroupLayout.DEFAULT_SIZE, javax.swing.GroupLayout.DEFAULT_SIZE, Short.MAX_VALUE))
.addPreferredGap(javax.swing.LayoutStyle.ComponentPlacement.RELATED)
.addGroup(jPanel1Layout.createParallelGroup(javax.swing.GroupLayout.Alignment.LEADING)
.addComponent(jButton14, javax.swing.GroupLayout.DEFAULT_SIZE, 43, Short.MAX_VALUE)
.addComponent(jButton15, javax.swing.GroupLayout.DEFAULT_SIZE, javax.swing.GroupLayout.DEFAULT_SIZE, Short.MAX_VALUE)))
.addGroup(javax.swing.GroupLayout.Alignment.LEADING, jPanel1Layout.createSequentialGroup()
.addComponent(jButton2)
.addPreferredGap(javax.swing.LayoutStyle.ComponentPlacement.RELATED)
.addComponent(jButton5)
.addPreferredGap(javax.swing.LayoutStyle.ComponentPlacement.RELATED)
.addComponent(jButton8)
.addPreferredGap(javax.swing.LayoutStyle.ComponentPlacement.RELATED)
.addComponent(jButton13, javax.swing.GroupLayout.DEFAULT_SIZE, javax.swing.GroupLayout.DEFAULT_SIZE, Short.MAX_VALUE))
.addGroup(javax.swing.GroupLayout.Alignment.LEADING, jPanel1Layout.createSequentialGroup()
.addComponent(jButton1)
.addPreferredGap(javax.swing.LayoutStyle.ComponentPlacement.RELATED)
.addComponent(jButton4)
.addPreferredGap(javax.swing.LayoutStyle.ComponentPlacement.RELATED)
.addComponent(jButton7)
.addPreferredGap(javax.swing.LayoutStyle.ComponentPlacement.RELATED)
.addComponent(jButton12)))
.addPreferredGap(javax.swing.LayoutStyle.ComponentPlacement.RELATED)
.addGroup(jPanel1Layout.createParallelGroup(javax.swing.GroupLayout.Alignment.LEADING, false)
.addComponent(jButton16, javax.swing.GroupLayout.DEFAULT_SIZE, javax.swing.GroupLayout.DEFAULT_SIZE, Short.MAX_VALUE)
.addComponent(jButton17, javax.swing.GroupLayout.DEFAULT_SIZE, javax.swing.GroupLayout.DEFAULT_SIZE, Short.MAX_VALUE)
.addComponent(jButton18, javax.swing.GroupLayout.DEFAULT_SIZE, javax.swing.GroupLayout.DEFAULT_SIZE, Short.MAX_VALUE)
.addComponent(jButton19, javax.swing.GroupLayout.DEFAULT_SIZE, javax.swing.GroupLayout.DEFAULT_SIZE, Short.MAX_VALUE))
.addPreferredGap(javax.swing.LayoutStyle.ComponentPlacement.RELATED)
.addGroup(jPanel1Layout.createParallelGroup(javax.swing.GroupLayout.Alignment.LEADING, false)
.addComponent(jButton22, javax.swing.GroupLayout.DEFAULT_SIZE, javax.swing.GroupLayout.DEFAULT_SIZE, Short.MAX_VALUE)
.addComponent(jButton21, javax.swing.GroupLayout.DEFAULT_SIZE, javax.swing.GroupLayout.DEFAULT_SIZE, Short.MAX_VALUE)
.addComponent(jButton20, javax.swing.GroupLayout.DEFAULT_SIZE, javax.swing.GroupLayout.DEFAULT_SIZE, Short.MAX_VALUE))
.addGap(126, 126, 126))
);
jPanel1Layout.setVerticalGroup(
jPanel1Layout.createParallelGroup(javax.swing.GroupLayout.Alignment.LEADING)
.addGroup(jPanel1Layout.createSequentialGroup()
.addComponent(jInternalFrame1, javax.swing.GroupLayout.PREFERRED_SIZE, javax.swing.GroupLayout.DEFAULT_SIZE, javax.swing.GroupLayout.PREFERRED_SIZE)
.addGap(18, 18, 18)
.addComponent(jTextField1, javax.swing.GroupLayout.PREFERRED_SIZE, javax.swing.GroupLayout.DEFAULT_SIZE, javax.swing.GroupLayout.PREFERRED_SIZE)
.addGap(18, 18, 18)
.addGroup(jPanel1Layout.createParallelGroup(javax.swing.GroupLayout.Alignment.BASELINE)
.addComponent(jButton1)
.addComponent(jButton4)
.addComponent(jButton7)
.addComponent(jButton12)
.addComponent(jButton16)
.addComponent(jButton20))
.addPreferredGap(javax.swing.LayoutStyle.ComponentPlacement.RELATED)
.addGroup(jPanel1Layout.createParallelGroup(javax.swing.GroupLayout.Alignment.BASELINE)
.addComponent(jButton2)
.addComponent(jButton5)
.addComponent(jButton8)
.addComponent(jButton13)
.addComponent(jButton17)
.addComponent(jButton21))
.addPreferredGap(javax.swing.LayoutStyle.ComponentPlacement.RELATED)
.addGroup(jPanel1Layout.createParallelGroup(javax.swing.GroupLayout.Alignment.BASELINE)
.addComponent(jButton3)
.addComponent(jButton6)
.addComponent(jButton9)
.addComponent(jButton14)
.addComponent(jButton18)
.addComponent(jButton22))
.addPreferredGap(javax.swing.LayoutStyle.ComponentPlacement.RELATED)
.addGroup(jPanel1Layout.createParallelGroup(javax.swing.GroupLayout.Alignment.BASELINE)
.addComponent(jButton10)
.addComponent(jButton11)
.addComponent(jButton15)
.addComponent(jButton19))
.addContainerGap(104, Short.MAX_VALUE))
);

jScrollPane1.setViewportView(jPanel1);

javax.swing.GroupLayout layout = new javax.swing.GroupLayout(getContentPane());
getContentPane().setLayout(layout);
layout.setHorizontalGroup(
layout.createParallelGroup(javax.swing.GroupLayout.Alignment.LEADING)
.addComponent(jScrollPane1, javax.swing.GroupLayout.DEFAULT_SIZE, 400, Short.MAX_VALUE)
);
layout.setVerticalGroup(
layout.createParallelGroup(javax.swing.GroupLayout.Alignment.LEADING)
.addComponent(jScrollPane1, javax.swing.GroupLayout.DEFAULT_SIZE, 300, Short.MAX_VALUE)
);
}//

private void jButton11ActionPerformed(java.awt.event.ActionEvent evt) {
// TODO add your handling code here:
aux += ".";
jTextField1.setText(aux);
}

private void jButton1ActionPerformed(java.awt.event.ActionEvent evt) {
// TODO add your handling code here:
if(aux =="0")
{
aux= "7";
jTextField1.setText(aux);
}
else{
aux += 7;
jTextField1.setText(aux);
}


}

private void jButton2ActionPerformed(java.awt.event.ActionEvent evt) {
// TODO add your handling code here:

if(aux =="0")
{
aux= "4";
jTextField1.setText(aux);
}
else{
aux += 4;
jTextField1.setText(aux);
}

}

private void jButton3ActionPerformed(java.awt.event.ActionEvent evt) {
// TODO add your handling code here:
if(aux =="0")
{
aux= "1";
jTextField1.setText(aux);
}
else{
aux += 1;
jTextField1.setText(aux);
}
}

private void jButton4ActionPerformed(java.awt.event.ActionEvent evt) {
// TODO add your handling code here:
if(aux =="0")
{
aux= "8";
jTextField1.setText(aux);
}
else{
aux += 8;
jTextField1.setText(aux);
}
}

private void jButton5ActionPerformed(java.awt.event.ActionEvent evt) {
// TODO add your handling code here:
if(aux =="0")
{
aux= "5";
jTextField1.setText(aux);
}
else{
aux += 5;
jTextField1.setText(aux);
}
}

private void jButton6ActionPerformed(java.awt.event.ActionEvent evt) {
// TODO add your handling code here:
if(aux =="0")
{
aux= "2";
jTextField1.setText(aux);
}
else{
aux += 2;
jTextField1.setText(aux);
}
}

private void jButton7ActionPerformed(java.awt.event.ActionEvent evt) {
// TODO add your handling code here:
if(aux =="0")
{
aux= "9";
jTextField1.setText(aux);
}
else{
aux += 9;
jTextField1.setText(aux);
}
}

private void jButton8ActionPerformed(java.awt.event.ActionEvent evt) {
// TODO add your handling code here:
if(aux =="0")
{
aux= "6";
jTextField1.setText(aux);
}
else{
aux += 6;
jTextField1.setText(aux);
}
}

private void jButton9ActionPerformed(java.awt.event.ActionEvent evt) {
// TODO add your handling code here:
if(aux =="0")
{
aux= "3";
jTextField1.setText(aux);
}
else{
aux += 3;
jTextField1.setText(aux);
}

}

private void jButton10ActionPerformed(java.awt.event.ActionEvent evt) {
// TODO add your handling code here:
if(aux =="0")
{
aux= "0";
jTextField1.setText(aux);
}
else{
aux += 0;
jTextField1.setText(aux);
}
}

private void jButton12ActionPerformed(java.awt.event.ActionEvent evt) {
// TODO add your handling code here:
String aux1 = jTextField1.getText();
String aux3 = jTextField1.getText();
double y = Double.parseDouble(aux1);
double x = Double.parseDouble(aux3);
aux = "";
jTextField1.setText(aux+(Operaciones.suma(x, y)));
aux = "";


}

private void jButton13ActionPerformed(java.awt.event.ActionEvent evt) {
// TODO add your handling code here:
String aux1 = jTextField1.getText();
String aux3 = jTextField1.getText();
double y = Double.parseDouble(aux1);
double x = Double.parseDouble(aux3);
aux = "";
jTextField1.setText(aux+(Operaciones.resta(x, y)));
aux = "";
}

private void jButton14ActionPerformed(java.awt.event.ActionEvent evt) {
// TODO add your handling code here:
String aux1 = jTextField1.getText();
String aux3 = jTextField1.getText();
double y = Double.parseDouble(aux1);
double x = Double.parseDouble(aux3);
aux = "";
jTextField1.setText(aux+(Operaciones.multiplicacion(x, y)));
aux = "";
}

private void jButton15ActionPerformed(java.awt.event.ActionEvent evt) {
// TODO add your handling code here:
String aux1 = jTextField1.getText();
String aux3 = jTextField1.getText();
double y = Double.parseDouble(aux1);
double x = Double.parseDouble(aux3);
aux = "";
jTextField1.setText(aux+(Operaciones.division(x, y)));
aux = "";
}

private void jButton16ActionPerformed(java.awt.event.ActionEvent evt) {
// TODO add your handling code here:
String aux1 = jTextField1.getText();
double r = Double.parseDouble(aux1);
r = Operaciones.seno(r);
aux = "";
jTextField1.setText(aux + r);
}

private void jButton17ActionPerformed(java.awt.event.ActionEvent evt) {
// TODO add your handling code here:
String aux1 = jTextField1.getText();
double r = Double.parseDouble(aux1);
r = Operaciones.coseno(r);
aux = "";
jTextField1.setText(aux + r);
}

private void jButton18ActionPerformed(java.awt.event.ActionEvent evt) {
// TODO add your handling code here:
String aux1 = jTextField1.getText();
double r = Double.parseDouble(aux1);
r = Operaciones.tangente(r);
aux = "";
jTextField1.setText(aux + r);
}

private void jButton19ActionPerformed(java.awt.event.ActionEvent evt) {
// TODO add your handling code here:
String aux1 = jTextField1.getText();
double r = Double.parseDouble(aux1);
r = Operaciones.logaritmo(r);
aux = "";
jTextField1.setText(aux + r);
}

private void jButton20ActionPerformed(java.awt.event.ActionEvent evt) {
// TODO add your handling code here:
String aux1 = jTextField1.getText();
double r = Double.parseDouble(aux1);
r = Operaciones.raiz(r);
aux = "";
jTextField1.setText(aux + r);

}

private void jButton21ActionPerformed(java.awt.event.ActionEvent evt) {
// TODO add your handling code here:
String aux1 = jTextField1.getText();
double r = Double.parseDouble(aux1);
r = Operaciones.raiz(r);
aux = "";
jTextField1.setText(aux + r);

}

private void jButton22ActionPerformed(java.awt.event.ActionEvent evt) {
// TODO add your handling code here:
aux = "0";
jTextField1.setText(aux);
}
public String aux="";
public String aux2="";

// Variables declaration - do not modify
private javax.swing.JButton jButton1;
private javax.swing.JButton jButton10;
private javax.swing.JButton jButton11;
private javax.swing.JButton jButton12;
private javax.swing.JButton jButton13;
private javax.swing.JButton jButton14;
private javax.swing.JButton jButton15;
private javax.swing.JButton jButton16;
private javax.swing.JButton jButton17;
private javax.swing.JButton jButton18;
private javax.swing.JButton jButton19;
private javax.swing.JButton jButton2;
private javax.swing.JButton jButton20;
private javax.swing.JButton jButton21;
private javax.swing.JButton jButton22;
private javax.swing.JButton jButton3;
private javax.swing.JButton jButton4;
private javax.swing.JButton jButton5;
private javax.swing.JButton jButton6;
private javax.swing.JButton jButton7;
private javax.swing.JButton jButton8;
private javax.swing.JButton jButton9;
private javax.swing.JInternalFrame jInternalFrame1;
private javax.swing.JPanel jPanel1;
private javax.swing.JScrollPane jScrollPane1;
private javax.swing.JTextField jTextField1;
// End of variables declaration

}

Suma con botones

Main. ClaseMatriz

public class Matriz {
public int numerofilas;
public int numerocolumnas;
public double [][]matriz;

public Matriz(){
}

public Matriz(int nf, int nc){
numerofilas = nf;
numerofolumnas = nc;
matriz = new double [numerofilas][numerocolumnas];

for(int i=0; i < numerofilas; i++)
for(int j=0; j < numerocolumnas; j++)
matriz[i][j]=0;
}

public Matriz suma(Matriz b){
Matriz resultado;

if((this.numerofilas == b.numerofilas)&& (this.numerocolumnas == b.numerocolumnas)){
resultado = new Matriz(this.numerofilas, this.numerocolumnas);
for(int i=0; i < this.numerofilas; i++)
for(int j=0; j < this.numerocolumnas; j++)
resultado.matriz[i][j] = this.matriz[i][j]+ b.matriz[i][j];
return resultado;
}
else
System.out.println("Error en las dimensiones de las matrices");
resultado=null;
return resultado;
}

public Matriz multiplicacion(Matriz b){
Matriz resultado;
if(this.numerofilas == b.numerocolumnas){
resultado=new Matriz(this.numerofilas,b.numerocolumnas);
for(int i=0; i < this.numerofilas; i++){
for(int j=0; j < b.numerocolumnas; j++){
for(int k=0; k < this.numerofilas; k++)
resultado.matriz[i][j] += (this.matriz[i][k]*b.matriz[k][j]);
}
}
return resultado;
}
else
System.out.println("Error en dimensiones de las matrices");
resultado = null;
return resultado;
}
public void leer(){
String aux;
for(int i=0; i < this.numerofilas; i++){
for(int j=0; j < this.numerocolumnas; j++){
aux = JOptionPane.showInputDialog(null,"Ingreso de valores","Ingrese el valor: "+(i+1)+","+(j+1),JOptionPane.DEFAULT_OPTION);
this.matriz[i][j]=Double.parseDouble(aux);
}
}
}

public String toString(){
String aux="\n[\n";
for(int i=0; i < numerofilas; i++){
for(int j=0; j < numerocolumnas; j++){
aux += matriz[i][j]+" ";
}
aux+="\n";
}
aux+= "]";
return aux;
}
}

Main.JavaApplet

public class NewJApplet extends javax.swing.JApplet {

/** Initializes the applet NewJApplet */
public void init() {
try {
java.awt.EventQueue.invokeAndWait(new Runnable() {
public void run() {
initComponents();
}
});
} catch (Exception ex) {
ex.printStackTrace();
}
}

/** This method is called from within the init() method to
* initialize the form.
* WARNING: Do NOT modify this code. The content of this method is
* always regenerated by the Form Editor.
*/
@SuppressWarnings("unchecked")
//
private void initComponents() {

jPanel1 = new javax.swing.JPanel();
jLabel1 = new javax.swing.JLabel();
jLabel2 = new javax.swing.JLabel();
jLabel3 = new javax.swing.JLabel();
jButton1 = new javax.swing.JButton();
jTextField1 = new javax.swing.JTextField();
jTextField2 = new javax.swing.JTextField();
jScrollPane1 = new javax.swing.JScrollPane();
jTextArea1 = new javax.swing.JTextArea();
jLabel4 = new javax.swing.JLabel();
jButton2 = new javax.swing.JButton();
jButton3 = new javax.swing.JButton();
jButton4 = new javax.swing.JButton();

jLabel1.setBackground(new java.awt.Color(255, 0, 255));
jLabel1.setFont(new java.awt.Font("Bradley Hand ITC", 3, 24));
jLabel1.setForeground(new java.awt.Color(255, 102, 204));
jLabel1.setText("CLASE MATRIZ");

jLabel2.setBackground(new java.awt.Color(255, 51, 51));
jLabel2.setText("Numero de filas");

jLabel3.setText("Numero de columnas");

jButton1.setText("leer matriz 1");
jButton1.addActionListener(new java.awt.event.ActionListener() {
public void actionPerformed(java.awt.event.ActionEvent evt) {
jButton1ActionPerformed(evt);
}
});

jTextField1.addActionListener(new java.awt.event.ActionListener() {
public void actionPerformed(java.awt.event.ActionEvent evt) {
jTextField1ActionPerformed(evt);
}
});

jTextArea1.setColumns(20);
jTextArea1.setRows(5);
jScrollPane1.setViewportView(jTextArea1);

jLabel4.setText("resultados");

jButton2.setText("imprimir");
jButton2.addActionListener(new java.awt.event.ActionListener() {
public void actionPerformed(java.awt.event.ActionEvent evt) {
jButton2ActionPerformed(evt);
}
});

jButton3.setText("leer matriz 2");
jButton3.addActionListener(new java.awt.event.ActionListener() {
public void actionPerformed(java.awt.event.ActionEvent evt) {
jButton3ActionPerformed(evt);
}
});

jButton4.setText("sumar");
jButton4.addActionListener(new java.awt.event.ActionListener() {
public void actionPerformed(java.awt.event.ActionEvent evt) {
jButton4ActionPerformed(evt);
}
});

javax.swing.GroupLayout jPanel1Layout = new javax.swing.GroupLayout(jPanel1);
jPanel1.setLayout(jPanel1Layout);
jPanel1Layout.setHorizontalGroup(
jPanel1Layout.createParallelGroup(javax.swing.GroupLayout.Alignment.LEADING)
.addGroup(javax.swing.GroupLayout.Alignment.TRAILING, jPanel1Layout.createSequentialGroup()
.addContainerGap(108, Short.MAX_VALUE)
.addComponent(jLabel1, javax.swing.GroupLayout.PREFERRED_SIZE, 200, javax.swing.GroupLayout.PREFERRED_SIZE)
.addGap(112, 112, 112))
.addGroup(jPanel1Layout.createSequentialGroup()
.addGap(23, 23, 23)
.addGroup(jPanel1Layout.createParallelGroup(javax.swing.GroupLayout.Alignment.LEADING)
.addComponent(jLabel2)
.addComponent(jLabel3, javax.swing.GroupLayout.PREFERRED_SIZE, 101, javax.swing.GroupLayout.PREFERRED_SIZE)
.addComponent(jButton1)
.addComponent(jButton4)
.addComponent(jButton3)
.addComponent(jButton2))
.addGap(53, 53, 53)
.addGroup(jPanel1Layout.createParallelGroup(javax.swing.GroupLayout.Alignment.LEADING)
.addComponent(jScrollPane1, javax.swing.GroupLayout.PREFERRED_SIZE, javax.swing.GroupLayout.DEFAULT_SIZE, javax.swing.GroupLayout.PREFERRED_SIZE)
.addGroup(jPanel1Layout.createParallelGroup(javax.swing.GroupLayout.Alignment.TRAILING, false)
.addComponent(jTextField2, javax.swing.GroupLayout.Alignment.LEADING)
.addComponent(jTextField1, javax.swing.GroupLayout.Alignment.LEADING, javax.swing.GroupLayout.DEFAULT_SIZE, 89, Short.MAX_VALUE))
.addComponent(jLabel4))
.addContainerGap(77, Short.MAX_VALUE))
);
jPanel1Layout.setVerticalGroup(
jPanel1Layout.createParallelGroup(javax.swing.GroupLayout.Alignment.LEADING)
.addGroup(jPanel1Layout.createSequentialGroup()
.addContainerGap()
.addComponent(jLabel1, javax.swing.GroupLayout.PREFERRED_SIZE, 83, javax.swing.GroupLayout.PREFERRED_SIZE)
.addGap(14, 14, 14)
.addGroup(jPanel1Layout.createParallelGroup(javax.swing.GroupLayout.Alignment.TRAILING)
.addComponent(jLabel2)
.addComponent(jTextField1, javax.swing.GroupLayout.PREFERRED_SIZE, javax.swing.GroupLayout.DEFAULT_SIZE, javax.swing.GroupLayout.PREFERRED_SIZE))
.addPreferredGap(javax.swing.LayoutStyle.ComponentPlacement.RELATED)
.addGroup(jPanel1Layout.createParallelGroup(javax.swing.GroupLayout.Alignment.TRAILING)
.addComponent(jTextField2, javax.swing.GroupLayout.PREFERRED_SIZE, javax.swing.GroupLayout.DEFAULT_SIZE, javax.swing.GroupLayout.PREFERRED_SIZE)
.addComponent(jLabel3))
.addGap(21, 21, 21)
.addGroup(jPanel1Layout.createParallelGroup(javax.swing.GroupLayout.Alignment.TRAILING)
.addComponent(jButton1)
.addComponent(jLabel4))
.addGap(11, 11, 11)
.addGroup(jPanel1Layout.createParallelGroup(javax.swing.GroupLayout.Alignment.LEADING)
.addComponent(jScrollPane1, javax.swing.GroupLayout.PREFERRED_SIZE, javax.swing.GroupLayout.DEFAULT_SIZE, javax.swing.GroupLayout.PREFERRED_SIZE)
.addGroup(jPanel1Layout.createSequentialGroup()
.addComponent(jButton3)
.addPreferredGap(javax.swing.LayoutStyle.ComponentPlacement.UNRELATED)
.addComponent(jButton4)
.addPreferredGap(javax.swing.LayoutStyle.ComponentPlacement.UNRELATED)
.addComponent(jButton2)))
.addContainerGap(31, Short.MAX_VALUE))
);

javax.swing.GroupLayout layout = new javax.swing.GroupLayout(getContentPane());
getContentPane().setLayout(layout);
layout.setHorizontalGroup(
layout.createParallelGroup(javax.swing.GroupLayout.Alignment.LEADING)
.addComponent(jPanel1, javax.swing.GroupLayout.DEFAULT_SIZE, javax.swing.GroupLayout.DEFAULT_SIZE, Short.MAX_VALUE)
);
layout.setVerticalGroup(
layout.createParallelGroup(javax.swing.GroupLayout.Alignment.LEADING)
.addComponent(jPanel1, javax.swing.GroupLayout.DEFAULT_SIZE, javax.swing.GroupLayout.DEFAULT_SIZE, Short.MAX_VALUE)
);
}//

private void jButton1ActionPerformed(java.awt.event.ActionEvent evt) {
// TODO add your handling code here:
String aux = jTextField1.getText();
nf = Integer.parseInt(aux);
aux = jTextField2.getText();
nc = Integer.parseInt(aux);//metodo para cambiar de string a entero
m = new Matriz(nf,nc);
}

private void jTextField1ActionPerformed(java.awt.event.ActionEvent evt) {
// TODO add your handling code here:
}

private void jButton2ActionPerformed(java.awt.event.ActionEvent evt) {
// TODO add your handling code here:
jTextArea1.setText(m.toString());
jTextArea1.setText(n.toString());
jTextArea1.setText(r.toString());
}

private void jButton3ActionPerformed(java.awt.event.ActionEvent evt) {
// TODO add your handling code here:
String aux = jTextField1.getText();
nf = Integer.parseInt(aux);
aux = jTextField2.getText();
nc = Integer.parseInt(aux);//metodo para cambiar de string a entero
n = new Matriz(nf,nc);
n.leer();
}

private void jButton4ActionPerformed(java.awt.event.ActionEvent evt) {
// TODO add your handling code here:
r = new Matriz(nf,nc);
r = m.suma(n);
}


// Variables declaration - do not modify
private javax.swing.JButton jButton1;
private javax.swing.JButton jButton2;
private javax.swing.JButton jButton3;
private javax.swing.JButton jButton4;
private javax.swing.JLabel jLabel1;
private javax.swing.JLabel jLabel2;
private javax.swing.JLabel jLabel3;
private javax.swing.JLabel jLabel4;
private javax.swing.JPanel jPanel1;
private javax.swing.JScrollPane jScrollPane1;
private javax.swing.JTextArea jTextArea1;
private javax.swing.JTextField jTextField1;
private javax.swing.JTextField jTextField2;
// End of variables declaration
public int nf;
public int nc;
public Matriz m;
public Matriz n;
public Matriz r;
}

Calculo del Movimiento Rectilíneo Uniformemente Variado (MRUV)

Se va a usar el mismo programa que para Vectores 3D
Main. ClaseMatriz

public class Matriz {
public int numerofilas;
public int numerocolumnas;
public double [][]matriz;

public Matriz(){
}

public Matriz(int nf, int nc){
numerofilas = nf;
numerofolumnas = nc;
matriz = new double [numerofilas][numerocolumnas];

for(int i=0; i < numerofilas; i++)
for(int j=0; j < numerocolumnas; j++)
matriz[i][j]=0;
}

public Matriz suma(Matriz b){
Matriz resultado;

if((this.numerofilas == b.numerofilas)&& (this.numerocolumnas == b.numerocolumnas)){
resultado = new Matriz(this.numerofilas, this.numerocolumnas);
for(int i=0; i < this.numerofilas; i++)
for(int j=0; j < this.numerocolumnas; j++)
resultado.matriz[i][j] = this.matriz[i][j]+ b.matriz[i][j];
return resultado;
}
else
System.out.println("Error en las dimensiones de las matrices");
resultado=null;
return resultado;
}

public Matriz multiplicacion(Matriz b){
Matriz resultado;
if(this.numerofilas == b.numerocolumnas){
resultado=new Matriz(this.numerofilas,b.numerocolumnas);
for(int i=0; i < this.numerofilas; i++){
for(int j=0; j < b.numerocolumnas; j++){
for(int k=0; k < this.numerofilas; k++)
resultado.matriz[i][j] += (this.matriz[i][k]*b.matriz[k][j]);
}
}
return resultado;
}
else
System.out.println("Error en dimensiones de las matrices");
resultado = null;
return resultado;
}

public String toString(){
String aux="\n[\n";
for(int i=0; i < numeroFilas; i++){
for(int j=0; j < numeroColumnas; j++){
aux += matriz[i][j]+" ";
}
aux+="\n";
}
aux+= "]";
return aux;
}
}

Main.ClaseVector
public class Vector3D extends Matriz{
double coorX;
double coorY;
double coorZ;

public Vector3D(){
super(1,3);
}

public Vector3D(double x, double y, double z){
super(1,3);
this.matriz[0][0] = x;
this.matriz[0][1] = y;
this.matriz[0][2] = z;
coordenadaX = x;
coordenadaY = y;
coordenadaZ = z;
}

public double magnitud(){
double resultado = 0;
for(int i=0; i < 3; i++){
resultado + = this.matriz[0][i]*this.matriz[0][i];
}
resultado = Math.sqrt(resultado);
return resultado;
}

public double magnitud1(){
double resultado;
resultado = this.coorX*this.coorX+this.coorY*this.coorY+this.coorZ*this.coorZ;
resultado = Math.sqrt(resultado);
return resultado;
}

//Otra forma de calcular la magnitud
public double magnitud2(){
double resultado;
resultado = Math.pow(this.coorX, 2)+Math.pow(this.coorY, 2)+Math.pow(this.coorZ, 2);
resultado = Math.sqrt(resultado);
return resultado;
}

//Calculo del unitario
public Vector3D uni(){
Vector3D uni = new Vector3D();
for(int i=0; i < 3; i++)
uni.matriz[0][i] = this.matriz[0][i]/this.magnitud2();
return uni;
}

public double productoEscalar(Vector3D v){
double resultado = 0;
for(int i=0; i < 3; i++)
resultado += this.matriz[0][i]*v.matriz[0][i];
return resultado;
}

public Vector3D productoCruz(Vector3D v){
Vector3D resultado;
resultado = new Vector3D();
resultado.matriz[0][0] = this.matriz[0][1]*v.matriz[0][2]-this.matriz[0][2]*v.matriz[0][1];
resultado.matriz[0][1] = this.matriz[0][2]*v.matriz[0][0]-this.matriz[0][0]*v.matriz[0][2];
resultado.matriz[0][2] = this.matriz[0][0]*v.matriz[0][1]-this.matriz[0][1]*v.matriz[0][0];
return resultado;
}


public static void main(String args[]){
Vector3D v1 = new Vector3D(3,2,-1);
Vector3D v2 = new Vector3D(1,2,2);
System.out.println(v1+"\n"+v2);
System.out.println("La coordenada en x es: "+v1.coordenadaX);
System.out.println("\nLa suma de los vectores es: "+(v1.suma(v2)));
System.out.println("\nLa magnitud del vector es: "+v1.magnitud());
System.out.println("\nLa magnitud del vector es: "+v1.magnitud1());
System.out.println("\nLa magnitud del vector es: "+v1.magnitud2());
System.out.println("\nEl vector unitario es: "+v1.unitario());
System.out.println("\nEl producto escalar entre los vectores es: "+v1.productoEscalar(v2));
System.out.println("\nEl producto cruz entre los vectores es: "+v1.productoCruz(v2));
}
}



Main.ClaseMRUV
public class MRUV extends Vector3D{
Matriz posicion;
Matriz velocidad;
Matriz aceleracion;
Matriz desplazamiento;
Matriz velocidad2;

public MRUV(){
}

public MRUV (Vector3D pos, Vector3D veli, Vector3D ace, Vector3D des){
posicion = pos;
velocidad = veli;
aceleracion = ace;
desplazamiento = des;
}

public void calcularPosicion(Vector3D ri, Vector3D veli, Vector3D ace, double t){
posicion = ri.suma((vel0.productoEscalarVector(t)).suma((ace.productoEscalarVector(Math.pow(t,2))).productoEscalarVector(1/2)));
}

public void calcularVelocidad(Vector3D veli, double t, Vector3D ace){
velocidad = veli.suma(ace.productoEscalarVector(t));
}

public void calcularDesplazamiento(Vector3D veli, double t, Vector3D ace){
desplazamiento = (veli.productoEscalarVector(t)).suma((ace.productoEscalarVector(Math.pow(t, 2))).productoEscalarVector(1/2));
}

/*public void calcularVelocidad2(Vector3D veli, Vector3D ace, Vector3D des){
velocidad2 = (Math.pow(vel0, 2)).suma((ace.productoCruz(desplazamiento)).productoEscalarVectorial(2));
}*/

public static void main(String args[]){
MRUV m = new MRUV();
Vector3D ri = new Vector3D (2,1,-1);
Vector3D veli = new Vector3D (0,1,6);
Vector3D ace = new Vector3D (3,-10,4);
double t = 3;
System.out.println("La posicion cuando: t = 3s; ri = 2i+j-k; vi = j+6k; a = 3i-10j+4k es: \n" +m.calcularPosicion(ri, veli, ace, t));
System.out.println("La velocidad cuando: t = 3s; vi = j+6k; a = 3i-10j+4k; es: \n" +m.calcularVelocidad(veli, t, ace));
System.out.println("El desplazamiento cuando: t = 3s; vi = j+6k; a = 3i-10j+4k es: \n" +m.calcularDesplazamiento(veli, t, ace));
}

}

Applet

Un applet es un componente de una aplicación que se ejecuta en el contexto de otro programa, por ejemplo un navegador web. El applet debe ejecutarse en un contenedor, que lo proporciona un programa anfitrión, mediante un plugin, o en aplicaciones como teléfonos móviles que soportan el modelo de programación por applets.
A diferencia de un programa, un applet no puede ejecutarse de manera independiente, ofrece información gráfica y a veces interactúa con el usuario, típicamente carece de sesión y tiene privilegios de seguridad restringidos. Un applet normalmente lleva a cabo una función muy específica que carece de uso independiente.
Ejemplos comunes de applets son las Java applets y las animaciones Flash. Otro ejemplo es el Windows Media Player utilizado para desplegar archivos de video incrustados en los navegadores como el Internet Explorer. Otros plugins permiten mostrar modelos 3D que funcionan con una applet.
Un Java applet es un código JAVA que carece de un método main, por eso se utiliza principalmente para el trabajo de páginas web, ya que es un pequeño programa que es utilizado en una página HTML y representado por una pequeña pantalla gráfica dentro de ésta.
Applet Java
Un applet Java es un applet escrito en el lenguaje de programación Java. Los applets de Java pueden correr en un navegador web utilizando la Java Virtual Machine (JVM), o en el AppletViewer de Sun.
Entre sus características podemos mencionar un esquema de seguridad que permite que los applets que se ejecutan en el equipo no tengan acceso a partes sensibles (por ej. no pueden escribir archivos), a menos que uno mismo le dé los permisos necesarios en el sistema; la desventaja de este enfoque es que la entrega de permisos es engorrosa para el usuario común, lo cual juega en contra de uno de los objetivos de los Java applets: proporcionar una forma fácil de ejecutar aplicaciones desde el navegador web.
En Java un applet (Subprograma), es un programa que puede incrustarse en un documento HTML; es decir en una página Web. Cuando un Navegador carga una página Web que contiene un Applet, éste se descarga en el navegador Web y comienza a ejecutarse. Esto nos permite crear programas que cualquier usuario puede ejecutar con tan solo cargar la página Web en su navegador.
El Navegador que carga y ejecuta el applet se conoce en términos genéricos como el contenedor de Applets. El kit de desarrollo de Software para java 2 (J2SDK) 1.4.1 incluye el contenedor de Applets, llamado appletviewer, para probar los applets antes de incrustarlos en una página Web.

Bibliografia

http://es.wikipedia.org/wiki/Applet_Java
http://es.wikipedia.org/wiki/Applet

Vectores en tres dimensiones

Main. ClaseMatriz

public class Matriz {
public int numerofilas;
public int numerocolumnas;
public double [][]matriz;

public Matriz(){
}

public Matriz(int nf, int nc){
numerofilas = nf;
numerofolumnas = nc;
matriz = new double [numerofilas][numerocolumnas];

for(int i=0; i < numerofilas; i++)
for(int j=0; j < numerocolumnas; j++)
matriz[i][j]=0;
}

public Matriz suma(Matriz b){
Matriz resultado;

if((this.numerofilas == b.numerofilas)&& (this.numerocolumnas == b.numerocolumnas)){
resultado = new Matriz(this.numerofilas, this.numerocolumnas);
for(int i=0; i < this.numerofilas; i++)
for(int j=0; j < this.numerocolumnas; j++)
resultado.matriz[i][j] = this.matriz[i][j]+ b.matriz[i][j];
return resultado;
}
else
System.out.println("Error en las dimensiones de las matrices");
resultado=null;
return resultado;
}

public Matriz multiplicacion(Matriz b){
Matriz resultado;
if(this.numerofilas == b.numerocolumnas){
resultado=new Matriz(this.numerofilas,b.numerocolumnas);
for(int i=0; i < this.numerofilas; i++){
for(int j=0; j < b.numerocolumnas; j++){
for(int k=0; k < this.numerofilas; k++)
resultado.matriz[i][j] += (this.matriz[i][k]*b.matriz[k][j]);
}
}
return resultado;
}
else
System.out.println("Error en dimensiones de las matrices");
resultado = null;
return resultado;
}

public String toString(){
String aux="\n[\n";
for(int i=0; i < numerofilas; i++){
for(int j=0; j < numerocolumnas; j++){
aux += matriz[i][j]+" ";
}
aux+="\n";
}
aux+= "]";
return aux;
}
}

Main.ClaseVector
public class Vector3D extends Matriz{
double coorX;
double coorY;
double coorZ;

public Vector3D(){
super(1,3);
}

public Vector3D(double x, double y, double z){
super(1,3);
this.matriz[0][0] = x;
this.matriz[0][1] = y;
this.matriz[0][2] = z;
coordenadaX = x;
coordenadaY = y;
coordenadaZ = z;
}

public double magnitud(){
double resultado = 0;
for(int i=0; i < 3; i++){
resultado + = this.matriz[0][i]*this.matriz[0][i];
}
resultado = Math.sqrt(resultado);
return resultado;
}

public double magnitud1(){
double resultado;
resultado = this.coorX*this.coorX+this.coorY*this.coorY+this.coorZ*this.coorZ;
resultado = Math.sqrt(resultado);
return resultado;
}

//Otra forma de calcular la magnitud
public double magnitud2(){
double resultado;
resultado = Math.pow(this.coorX, 2)+Math.pow(this.coorY, 2)+Math.pow(this.coorZ, 2);
resultado = Math.sqrt(resultado);
return resultado;
}

//Calculo del unitario
public Vector3D uni(){
Vector3D uni = new Vector3D();
for(int i=0; i < 3; i++)
uni.matriz[0][i] = this.matriz[0][i]/this.magnitud2();
return uni;
}

public double productoEscalar(Vector3D v){
double resultado = 0;
for(int i=0; i < 3; i++)
resultado += this.matriz[0][i]*v.matriz[0][i];
return resultado;
}

public Vector3D productoCruz(Vector3D v){
Vector3D resultado;
resultado = new Vector3D();
resultado.matriz[0][0] = this.matriz[0][1]*v.matriz[0][2]-this.matriz[0][2]*v.matriz[0][1];
resultado.matriz[0][1] = this.matriz[0][2]*v.matriz[0][0]-this.matriz[0][0]*v.matriz[0][2];
resultado.matriz[0][2] = this.matriz[0][0]*v.matriz[0][1]-this.matriz[0][1]*v.matriz[0][0];
return resultado;
}


public static void main(String args[]){
Vector3D v1 = new Vector3D(3,2,-1);
Vector3D v2 = new Vector3D(1,2,2);
System.out.println(v1+"\n"+v2);
System.out.println("La coordenada en x es: "+v1.coordenadaX);
System.out.println("\nLa suma de los vectores es: "+(v1.suma(v2)));
System.out.println("\nLa magnitud del vector es: "+v1.magnitud());
System.out.println("\nLa magnitud del vector es: "+v1.magnitud1());
System.out.println("\nLa magnitud del vector es: "+v1.magnitud2());
System.out.println("\nEl vector unitario es: "+v1.unitario());
System.out.println("\nEl producto escalar entre los vectores es: "+v1.productoEscalar(v2));
System.out.println("\nEl producto cruz entre los vectores es: "+v1.productoCruz(v2));
}
}