Thread: if and else

hello,
i`m having a problem with if and else, as you can see in the code in below the if and else is working for the first qustion, but how i can change it if i want to move to the next qustion ?

public class easy extends javax.swing.JFrame {
    public easy() {
        initComponents();
    }
 
 
    @SuppressWarnings("unchecked")
    // <editor-fold defaultstate="collapsed" desc="Generated Code">                          
    private void initComponents() {
 
        buttonGroup1 = new javax.swing.ButtonGroup();
        buttonGroup2 = new javax.swing.ButtonGroup();
        jLabel1 = new javax.swing.JLabel();
        jRadioButton1 = new javax.swing.JRadioButton();
        jRadioButton2 = new javax.swing.JRadioButton();
        jRadioButton3 = new javax.swing.JRadioButton();
        jRadioButton4 = new javax.swing.JRadioButton();
        jLabel2 = new javax.swing.JLabel();
        jButton1 = new javax.swing.JButton();
        jButton2 = new javax.swing.JButton();
 
        setDefaultCloseOperation(javax.swing.WindowConstants.EXIT_ON_CLOSE);
        addWindowListener(new java.awt.event.WindowAdapter() {
            public void windowOpened(java.awt.event.WindowEvent evt) {
                formWindowOpened(evt);
            }
        });
 
        jButton1.setText("Submit");
        jButton1.addActionListener(new java.awt.event.ActionListener() {
            public void actionPerformed(java.awt.event.ActionEvent evt) {
                jButton1ActionPerformed(evt);
            }
        });
 
        jButton2.setText("Next");
        jButton2.addActionListener(new java.awt.event.ActionListener() {
            public void actionPerformed(java.awt.event.ActionEvent evt) {
                jButton2ActionPerformed(evt);
            }
        });
 
        javax.swing.GroupLayout layout = new javax.swing.GroupLayout(getContentPane());
        getContentPane().setLayout(layout);
        layout.setHorizontalGroup(
            layout.createParallelGroup(javax.swing.GroupLayout.Alignment.LEADING)
            .addGroup(layout.createSequentialGroup()
                .addGap(19, 19, 19)
                .addGroup(layout.createParallelGroup(javax.swing.GroupLayout.Alignment.LEADING)
                    .addGroup(layout.createSequentialGroup()
                        .addComponent(jButton1)
                        .addPreferredGap(javax.swing.LayoutStyle.ComponentPlacement.RELATED, 221, Short.MAX_VALUE)
                        .addComponent(jButton2)
                        .addGap(40, 40, 40))
                    .addGroup(layout.createSequentialGroup()
                        .addGroup(layout.createParallelGroup(javax.swing.GroupLayout.Alignment.LEADING)
                            .addComponent(jRadioButton2)
                            .addComponent(jRadioButton1)
                            .addComponent(jRadioButton3)
                            .addComponent(jRadioButton4))
                        .addContainerGap(360, Short.MAX_VALUE))))
            .addGroup(layout.createSequentialGroup()
                .addContainerGap()
                .addComponent(jLabel1)
                .addContainerGap(390, Short.MAX_VALUE))
            .addGroup(javax.swing.GroupLayout.Alignment.TRAILING, layout.createSequentialGroup()
                .addContainerGap(194, Short.MAX_VALUE)
                .addComponent(jLabel2)
                .addGap(206, 206, 206))
        );
        layout.setVerticalGroup(
            layout.createParallelGroup(javax.swing.GroupLayout.Alignment.LEADING)
            .addGroup(layout.createSequentialGroup()
                .addGap(20, 20, 20)
                .addComponent(jLabel1)
                .addGap(18, 18, 18)
                .addComponent(jRadioButton1)
                .addPreferredGap(javax.swing.LayoutStyle.ComponentPlacement.RELATED)
                .addComponent(jRadioButton2)
                .addPreferredGap(javax.swing.LayoutStyle.ComponentPlacement.RELATED)
                .addComponent(jRadioButton3)
                .addPreferredGap(javax.swing.LayoutStyle.ComponentPlacement.RELATED)
                .addComponent(jRadioButton4)
                .addGap(76, 76, 76)
                .addComponent(jLabel2)
                .addGap(27, 27, 27)
                .addGroup(layout.createParallelGroup(javax.swing.GroupLayout.Alignment.BASELINE)
                    .addComponent(jButton1)
                    .addComponent(jButton2))
                .addContainerGap(52, Short.MAX_VALUE))
        );
 
        pack();
    }// </editor-fold>                        
 
    private void formWindowOpened(java.awt.event.WindowEvent evt) {                                  
 
 
 
        jLabel1.setText("whats my name?");
        jRadioButton1.setText("aziz");
        jRadioButton2.setText("fahad");
        jRadioButton3.setText("Abdulla");
        jRadioButton4.setText("Khaled");
 
        buttonGroup1.add(jRadioButton1);
        buttonGroup1.add(jRadioButton2);
        buttonGroup1.add(jRadioButton3);
        buttonGroup1.add(jRadioButton4);
        buttonGroup2.add(jRadioButton1);
        buttonGroup2.add(jRadioButton2);
        buttonGroup2.add(jRadioButton3);
        buttonGroup2.add(jRadioButton4);
 
 
    }                                 
 
    private void jButton1ActionPerformed(java.awt.event.ActionEvent evt) {                                         
      if (jRadioButton1.isSelected())
      { jLabel2.setText("right");}
      else jLabel2.setText("wrong");
 
    }                                        
 
    private void jButton2ActionPerformed(java.awt.event.ActionEvent evt) {                                         
jLabel2.setText(null);
jLabel1.setText("how old am I");
jRadioButton1.setText("15");
jRadioButton2.setText("16");
jRadioButton3.setText("17");
jRadioButton4.setText("18");
 
    }                                        
 
    public static void main(String args[]) {
        java.awt.EventQueue.invokeLater(new Runnable() {
            public void run() {
                new easy().setVisible(true);
            }
        });
    }
 
    // Variables declaration - do not modify                     
    private javax.swing.ButtonGroup buttonGroup1;
    private javax.swing.ButtonGroup buttonGroup2;
    private javax.swing.JButton jButton1;
    private javax.swing.JButton jButton2;
    private javax.swing.JLabel jLabel1;
    private javax.swing.JLabel jLabel2;
    private javax.swing.JRadioButton jRadioButton1;
    private javax.swing.JRadioButton jRadioButton2;
    private javax.swing.JRadioButton jRadioButton3;
    private javax.swing.JRadioButton jRadioButton4;
    // End of variables declaration                   
 
}