Swing problems...

Question

Hello all... am having problems while compiling a GUI application.
The compiler says that the package org.jdesktop.layout does not exist :-/
i've read that this is happens when you align or move buttons, labels, etc..
if anyone has a solution pls let me know, and thaks!
Here is the code:
* Binomial.java
* Created on March 21, 2006, 8:38 PM
package programas;
* @author  Dionis
public class Binomial extends javax.swing.JApplet {
    /** Initializes the applet Binomial */
    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.
    // <editor-fold defaultstate="collapsed" desc=" Generated Code ">                         
    private void initComponents() {
        jLabel1 = new javax.swing.JLabel();
        jLabel2 = new javax.swing.JLabel();
        ValorN = new javax.swing.JTextField();
        ValorP = new javax.swing.JTextField();
        jLabel3 = new javax.swing.JLabel();
        JTextField3 = new javax.swing.JTextField();
        jButton1 = new javax.swing.JButton();
        jButton2 = new javax.swing.JButton();
        jLabel1.setText("Digite a N:");
        jLabel2.setText("Digite a P:");
        jLabel3.setText("Coeficiente B:");
        JTextField3.setEditable(false);
        jButton1.setText("Calcular");
        jButton1.addActionListener(new java.awt.event.ActionListener() {
            public void actionPerformed(java.awt.event.ActionEvent evt) {
                jButton1ActionPerformed(evt);
        jButton2.setText("Limpiar");
        jButton2.addActionListener(new java.awt.event.ActionListener() {
            public void actionPerformed(java.awt.event.ActionEvent evt) {
                jButton2ActionPerformed(evt);
        org.jdesktop.layout.GroupLayout layout = new org.jdesktop.layout.GroupLayout(getContentPane());
        getContentPane().setLayout(layout);
        layout.setHorizontalGroup(
            layout.createParallelGroup(org.jdesktop.layout.GroupLayout.LEADING)
            .add(layout.createSequentialGroup()
                .addContainerGap()
                .add(layout.createParallelGroup(org.jdesktop.layout.GroupLayout.LEADING)
                    .add(jLabel1)
                    .add(jLabel2)
                    .add(jLabel3))
                .add(24, 24, 24)
                .add(layout.createParallelGroup(org.jdesktop.layout.GroupLayout.LEADING)
                    .add(layout.createSequentialGroup()
                        .add(JTextField3, org.jdesktop.layout.GroupLayout.PREFERRED_SIZE, 123, org.jdesktop.layout.GroupLayout.PREFERRED_SIZE)
                        .addContainerGap())
                    .add(layout.createParallelGroup(org.jdesktop.layout.GroupLayout.LEADING)
                        .add(layout.createSequentialGroup()
                            .add(layout.createParallelGroup(org.jdesktop.layout.GroupLayout.LEADING)
                                .add(ValorP, org.jdesktop.layout.GroupLayout.DEFAULT_SIZE, 103, Short.MAX_VALUE)
                                .add(ValorN, org.jdesktop.layout.GroupLayout.DEFAULT_SIZE, 103, Short.MAX_VALUE))
                            .addContainerGap(113, org.jdesktop.layout.GroupLayout.PREFERRED_SIZE))
                        .add(layout.createSequentialGroup()
                            .add(jButton1)
                            .addPreferredGap(org.jdesktop.layout.LayoutStyle.RELATED)
                            .add(jButton2)
                            .addContainerGap()))))
        layout.setVerticalGroup(
            layout.createParallelGroup(org.jdesktop.layout.GroupLayout.LEADING)
            .add(layout.createSequentialGroup()
                .add(26, 26, 26)
                .add(layout.createParallelGroup(org.jdesktop.layout.GroupLayout.BASELINE)
                    .add(jLabel1)
                    .add(ValorN, org.jdesktop.layout.GroupLayout.PREFERRED_SIZE, org.jdesktop.layout.GroupLayout.DEFAULT_SIZE, org.jdesktop.layout.GroupLayout.PREFERRED_SIZE))
                .addPreferredGap(org.jdesktop.layout.LayoutStyle.RELATED)
                .add(layout.createParallelGroup(org.jdesktop.layout.GroupLayout.BASELINE)
                    .add(jLabel2)
                    .add(ValorP, org.jdesktop.layout.GroupLayout.PREFERRED_SIZE, org.jdesktop.layout.GroupLayout.DEFAULT_SIZE, org.jdesktop.layout.GroupLayout.PREFERRED_SIZE))
                .add(22, 22, 22)
                .add(layout.createParallelGroup(org.jdesktop.layout.GroupLayout.BASELINE)
                    .add(jLabel3)
                    .add(JTextField3, org.jdesktop.layout.GroupLayout.PREFERRED_SIZE, 78, org.jdesktop.layout.GroupLayout.PREFERRED_SIZE))
                .add(65, 65, 65)
                .add(layout.createParallelGroup(org.jdesktop.layout.GroupLayout.BASELINE)
                    .add(jButton2)
                    .add(jButton1))
                .addContainerGap(org.jdesktop.layout.GroupLayout.DEFAULT_SIZE, Short.MAX_VALUE))
    }// </editor-fold>                       
    private void jButton2ActionPerformed(java.awt.event.ActionEvent evt) {                                        
                ValorN.setText("");
                ValorP.setText("");
    private void jButton1ActionPerformed(java.awt.event.ActionEvent evt) {                                        
       int N = Integer.parseInt(ValorN.getText());
       int P = Integer.parseInt(ValorP.getText());
       int DNP = 0;
       long FN = 0;
       long FP = 0;
       long FD = 0;
       long CB =  0;
       String texto = "";
       final int repetidor = 1;
      DNP = (N - P);
        // Calcula Factorial de N
        if (N < 2){
          JTextField3.setText("Menores que 2 no tienen factorial");
        else{
        for (int factorial = 1; factorial <= N; N++){
           FN = FN * factorial;
       //Calcular Factorial de P
      if (P < 2){
       JTextField3.setText("Menores que 2 no tienen factorial");
      else{
          for(int factorial =1; factorial <= P; P++){
              FP = FP * factorial;
      //Calcular Factorial de  (N-P)
      if (DNP < 2){
          JTextField3.setText("Menores que 2 no tienen factorial");
      else {
          for (int factorial =1; factorial <= DNP; DNP++){
              FD = FD * factorial;
      //Calculo de Coeficiente Binomial
      CB = N/FP * FD;
       texto = texto+Long.toString(CB);
       JTextField3.setText("texto");
    // Variables declaration - do not modify                    
    private javax.swing.JTextField JTextField3;
    private javax.swing.JTextField ValorN;
    private javax.swing.JTextField ValorP;
    private javax.swing.JButton jButton1;
    private javax.swing.JButton jButton2;
    private javax.swing.JLabel jLabel1;
    private javax.swing.JLabel jLabel2;
    private javax.swing.JLabel jLabel3;
    // End of variables declaration                  
}

Answer 1

The way for solve this problem is, step by step:
1. In your preject, over "libraries", right clik and add libraries
2. Selcet "Swing Layout Extensions" and push "Manage Libraries..."
3. "Add Jar/Folder..."
4. Select "c:/Program files/netbeams-5.0/modules/ext/swing-layout-1.0.jar" (in spanish c:/archivos de programa/....)
5. Build your project (If you have more than 1 project, be careful that you are compiling this project and no other)
Be happy my friend...