Thread: My JPanel-form doesn´t show up

Hello!

I've just started to try out the GUI of Netbeans and I can't understand why my JPanel doesn't show up. The program is just running for 1 second and no error is generated. Here is my code:

public class HängaGubbe2 extends javax.swing.JPanel {
 
    private String valtOrd;
 
    public HängaGubbe2() {
        initComponents();
    }
 
    /**
     * This method is called from within the constructor to initialize the form.
     * WARNING: Do NOT modify this code. The content of this method is always
     * regenerated by the Form Editor.
     */
    @SuppressWarnings("unchecked")
    // <editor-fold defaultstate="collapsed" desc="Generated Code">                          
    private void initComponents() {
 
        jLabel1 = new javax.swing.JLabel();
        jTextField1 = new javax.swing.JTextField();
        jProgressBar1 = new javax.swing.JProgressBar();
        jButton1 = new javax.swing.JButton();
        jLabel3 = new javax.swing.JLabel();
 
        jLabel1.setFont(new java.awt.Font("Tahoma", 1, 18)); // NOI18N
        jLabel1.setText("Gissa på en bokstav i ordet");
 
        jButton1.setText("Hämta nytt ord");
 
        jLabel3.setFont(new java.awt.Font("Tahoma", 1, 24)); // NOI18N
 
        javax.swing.GroupLayout layout = new javax.swing.GroupLayout(this);
        this.setLayout(layout);
        layout.setHorizontalGroup(
            layout.createParallelGroup(javax.swing.GroupLayout.Alignment.LEADING)
            .addGroup(layout.createSequentialGroup()
                .addGroup(layout.createParallelGroup(javax.swing.GroupLayout.Alignment.LEADING)
                    .addGroup(layout.createSequentialGroup()
                        .addContainerGap()
                        .addComponent(jLabel1)
                        .addGap(18, 18, 18)
                        .addComponent(jTextField1, javax.swing.GroupLayout.PREFERRED_SIZE, 52, javax.swing.GroupLayout.PREFERRED_SIZE))
                    .addGroup(layout.createSequentialGroup()
                        .addGap(31, 31, 31)
                        .addComponent(jProgressBar1, javax.swing.GroupLayout.PREFERRED_SIZE, 285, javax.swing.GroupLayout.PREFERRED_SIZE))
                    .addGroup(layout.createSequentialGroup()
                        .addGap(104, 104, 104)
                        .addComponent(jButton1))
                    .addGroup(layout.createSequentialGroup()
                        .addGap(95, 95, 95)
                        .addComponent(jLabel3, javax.swing.GroupLayout.PREFERRED_SIZE, 145, javax.swing.GroupLayout.PREFERRED_SIZE)))
                .addContainerGap(javax.swing.GroupLayout.DEFAULT_SIZE, Short.MAX_VALUE))
        );
        layout.setVerticalGroup(
            layout.createParallelGroup(javax.swing.GroupLayout.Alignment.LEADING)
            .addGroup(layout.createSequentialGroup()
                .addGap(21, 21, 21)
                .addComponent(jLabel3, javax.swing.GroupLayout.PREFERRED_SIZE, 42, javax.swing.GroupLayout.PREFERRED_SIZE)
                .addPreferredGap(javax.swing.LayoutStyle.ComponentPlacement.RELATED)
                .addGroup(layout.createParallelGroup(javax.swing.GroupLayout.Alignment.BASELINE)
                    .addComponent(jTextField1, javax.swing.GroupLayout.PREFERRED_SIZE, javax.swing.GroupLayout.DEFAULT_SIZE, javax.swing.GroupLayout.PREFERRED_SIZE)
                    .addComponent(jLabel1, javax.swing.GroupLayout.PREFERRED_SIZE, 53, javax.swing.GroupLayout.PREFERRED_SIZE))
                .addPreferredGap(javax.swing.LayoutStyle.ComponentPlacement.UNRELATED)
                .addComponent(jProgressBar1, javax.swing.GroupLayout.PREFERRED_SIZE, 29, javax.swing.GroupLayout.PREFERRED_SIZE)
                .addPreferredGap(javax.swing.LayoutStyle.ComponentPlacement.UNRELATED)
                .addComponent(jButton1, javax.swing.GroupLayout.DEFAULT_SIZE, 38, Short.MAX_VALUE)
                .addGap(7, 7, 7))
        );
    }// </editor-fold>                        
    // Variables declaration - do not modify                     
    private javax.swing.JButton jButton1;
    private javax.swing.JLabel jLabel1;
    private javax.swing.JLabel jLabel3;
    private javax.swing.JProgressBar jProgressBar1;
    private javax.swing.JTextField jTextField1;
    // End of variables declaration                   
public void actionPerformed(ActionEvent e)
    {
        if (e.getSource() == jButton1)
        {
 
            jProgressBar1.setValue(jProgressBar1.getMinimum());
            try {
 
                 Scanner sc = new Scanner(new FileReader("ord.txt"));
                 java.util.List<String> ord = new ArrayList<String>();
 
                 while (sc.hasNext())
                 {
                     ord.add(sc.next());
                 }
 
                 Random rand = new Random();
 
                 int slump = rand.nextInt(ord.size());
 
                 valtOrd = ord.get(slump);
 
 
                 char[] array = new char[valtOrd.length()];
 
                 Arrays.fill(array, '?');
 
                 String hemligtOrd = new String(array);
 
                 jLabel3.setText(hemligtOrd);
            }
            catch (FileNotFoundException fe){
 
                System.out.println("Filen finns inte");
            }
 
        }
        else if (e.getSource() == jTextField1)
        {
            String txt = jTextField1.getText();
 
            if(valtOrd.indexOf(txt)!=-1)
            {
 
                JOptionPane.showMessageDialog(null, "Bokstaven hittades i ordet!");
 
                if(valtOrd.indexOf(txt)==valtOrd.lastIndexOf(txt))
                {
                    char [] hit = new char[jLabel3.getText().length()];
                    Arrays.fill(hit, '?');
                    char c = txt.charAt(0);
                    hit[valtOrd.indexOf(txt)] = c;
 
                    String hemligtOrd = new String(hit);
                    jLabel3.setText(hemligtOrd);
 
                }
            }
            else
            {
                JOptionPane.showMessageDialog(null, "Bokstaven finns inte!");
                jProgressBar1.setValue(jProgressBar1.getValue()+1);
            }
 
        }
 
    }
 
    public static void main(String [] arg)
    {
        HängaGubbe2 h = new HängaGubbe2();
    }
}