test.java

《Java2图形设计卷II：Swing》配套光盘源码

import java.awt.*;
import java.awt.event.*;
import javax.swing.*;

public class Test extends JApplet {
	private JButton button = new JButton("show internal frame");

	public Test() {
		Container contentPane = getContentPane();

		contentPane.setLayout(new FlowLayout());
		contentPane.add(button);

		button.addActionListener(new ActionListener() {
			public void actionPerformed(ActionEvent e) {
				JOptionPane.showInternalMessageDialog(
				  button, // parentComponent
				  "Break Time ...", // message
				  "Reminder!", // title
				  JOptionPane.INFORMATION_MESSAGE); // messageType
			}
		});
	}
}