Contoh Program Event Handling di Java (3)

Posted at November 5, 2010

Pada contoh berikut ini ditambahkan window konfirmasi saat tombol exit ditekan.
Berikut ini tampilannya:


Contoh program:

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01	import java.awt.*;

02

03	import java.awt.event.*;

04

05	import javax.swing.*;

06

07	public class ClickMe3 extends JFrame {

08

09	private JButton tombol, btnExit;

10

11	public ClickMe3() {

12

13	super ("Event Handling");

14

15	Container container = getContentPane();

16

17	container.setLayout(new FlowLayout());

18

19	ClickListener cl = new ClickListener ();

20

21	tombol = new JButton ("Click Me!");

22

23	tombol.addActionListener(cl);

24

25	container.add(tombol);

26

27	btnExit = new JButton ("Exit");

28

29	btnExit.addActionListener(cl);

30

31	container.add(btnExit);

32

33	setSize (200,100);

34

35	setVisible (true);

36

37

}

38

39	public static void main (String arg[]) {

40

41	ClickMe3 test = new ClickMe3();

42

43	test.setDefaultCloseOperation(JFrame.EXIT_ON_CLOSE);

44

45

}

46

47	//inner class

48

49	private class ClickListener implements ActionListener {

50

51	public void actionPerformed (ActionEvent e) {

52

53	if (e.getSource() == tombol) {

54

55	JOptionPane.showMessageDialog(null, "You click me again, guys !!!");

56

57	} else if (e.getSource() == btnExit){

58

59	if ( JOptionPane.showConfirmDialog(null, "Apakah Anda yakin akan keluar ?","Konfirmasi",

60

61	JOptionPane.OK_CANCEL_OPTION,JOptionPane.QUESTION_MESSAGE) == JOptionPane.OK_OPTION) {

62

63	System.exit(0);

64

65

}

66

67

}

68

69

}

70

71

}

72

73

}

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