Tugas Pertemuan 9 Java: Event Handling

EventCheck.java
kode:
     import java.awt.*;
     import java.awt.event.*;
     import javax.swing.*;

     class CheckHandling extends JFrame implements ItemListener{
     private JTextField teks;
     private JPanel panel;
     private JCheckBox CBox1, CBox2, CBox3;

     public CheckHandling() {
     setTitle("Tugas CheckBox Handling");
     teks = new JTextField("Jenis Kelamin : Pilihan");
     teks.setHorizontalAlignment(SwingConstants.CENTER);
     panel = new JPanel(new FlowLayout());
     CBox1 = new JCheckBox("Pria");
     CBox2 = new JCheckBox("Wanita");
     CBox3 = new JCheckBox("Banci");

     ButtonGroup group = new ButtonGroup();
     group.add(CBox1);
     group.add(CBox2);
     group.add(CBox3);
     CBox1.addItemListener(this);
     CBox2.addItemListener(this);
     CBox3.addItemListener(this);

     setLayout(new BorderLayout());
     add(teks,"North");
     add(panel,"West");
     panel.add(CBox1);
     panel.add(CBox2);
     panel.add(CBox3);

     pack();
     setVisible(true);
     setLocation(200,200);
     setDefaultCloseOperation(EXIT_ON_CLOSE);
     }

     public void itemStateChanged(ItemEvent event) {
     if(event.getSource()==CBox1) {
     if(event.getStateChange()==ItemEvent.SELECTED)
     teks.setText("Jenis Kelamin : Pria");
     }
     if(event.getSource()==CBox2){
     if(event.getStateChange()==ItemEvent.SELECTED)
     teks.setText("Jenis Kelamin : Wanita");
     }
     if(event.getSource()==CBox3){
     if(event.getStateChange()==ItemEvent.SELECTED)
     teks.setText("Jenis Kelamin : Banci");
     }
     }
     }

     public class EventCheck{
     public static void main (String[] args){
     new CheckHandling();
     }
     }

Output: