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Thread: if and else

  1. #1
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    Default 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                   
     
    }
    Last edited by helloworld922; June 1st, 2010 at 12:32 PM.

  2. #2
    Super Moderator Norm's Avatar
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    Default Re: if and else

    Where in your code is the problem? Please add some comments to the code that show where the problem is.

  3. #3
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    Default Re: if and else

    There is one and only 1 if...else statement in there:

     if (jRadioButton1.isSelected())
          { jLabel2.setText("right");}
          else jLabel2.setText("wrong");

    and there is nothing wrong with that.

    However this looks like IDE generated code. Either don't mess with it and accept it, or erase and start writing