01: import java.awt.*;
02: import java.awt.event.*;
03: 
04: public class GUIaa extends Frame {
05:     Button    b0 = new Button("Even/Odd?");
06:     Label     x0 = new Label("Type a number and press...");
07:     TextField t0 = new TextField();
08:    
09:    public GUIaa() {
10:        setLayout(null);
11:        add(t0); t0.setBounds(10, 40, 90, 30);
12:        add(b0); b0.setBounds(110, 40, 90, 30);
13:        add(x0); x0.setBounds(10, 80, 180, 30);
14:        b0.addActionListener(new ActionListener() {
15:            public void actionPerformed(ActionEvent evt) {
16:                int i = (new Integer(t0.getText())).intValue();       
17:                t0.setText("");
18:                if(i % 2 == 0) {
19:                    x0.setText(i + " is Even");
20:                } else {
21:                    x0.setText(i + " is Odd");
22:                }
23:             }
24:         });
25:     }
26:     public static void main(String[] args) {
27:         Frame win = new GUIaa();
28:         win.setSize(200, 150); win.setVisible(true);
29:         win.addWindowListener(new WindowAdapter() {
30:             public void windowClosing(WindowEvent evt) {
31:                 System.exit(0);
32:             }
33:         });
34:     }
35: }