Handle Action Events for AWT Button Example

1. /*
2. Handle Action Events for AWT Button Example
3. This java example shows how to handle action event of AWT Button by implementing
4. ActionListener interface.
5. */
6.  
7. import java.applet.Applet;
8. import java.awt.Button;
9. import java.awt.Graphics;
10. import java.awt.event.ActionEvent;
11. import java.awt.event.ActionListener;
12.  
13. /*
14. <applet code="HandleActionEventExample" width=200 height=200>
15. </applet>
16. */
17.  
18. public class HandleActionEventExample extends Applet implements ActionListener{
19.  
20. String actionMessage="";
21.  
22. public void init(){
23. //create Buttons
24. Button Button1 = new Button("Ok");
25. Button Button2 = new Button("Cancel");
26.  
27. //add Buttons
28. add(Button1);
29. add(Button2);
30.  
31. //set action listeners for buttons
32. Button1.addActionListener(this);
33. Button2.addActionListener(this);
34. }
35.  
36. public void paint(Graphics g){
37. g.drawString(actionMessage,10,50);
38. }
39.  
40. public void actionPerformed(ActionEvent ae){
41.  
42. /*
43. * Get the action command using
44. * String getActionCommand() method.
45. */
46.  
47. String action = ae.getActionCommand();
48.  
49. if(action.equals("Ok"))
50. actionMessage = "Ok Button Pressed";
51. else if(action.equals("Cancel"))
52. actionMessage = "Cancel Button Pressed";
53.  
54. repaint();
55. }
56. }