不多说，代码很龊，匿名类响应

import javax.swing.JButton;import javax.swing.JDialog;import javax.swing.JFrame;import javax.swing.JLabel;import javax.swing.*;import java.awt.*;import java.awt.event.ActionEvent;import java.awt.event.ActionListener;class MyJDialog extends JDialog {	public MyJDialog(MyFrame frame1) {		super(frame1, "JDialog窗体", true);		Panel myPanel = new Panel();		myPanel.add(new JLabel("这是一个对话框"));		this.setBounds(120, 120, 100, 100);		this.add(myPanel);	}}public class MyFrame extends JFrame {	public MyFrame() {		setVisible(true);		setBounds(100, 200, 200, 200);		setDefaultCloseOperation(EXIT_ON_CLOSE);		Panel myPanel2 = new Panel();		myPanel2.setLayout(null);		JLabel j1 = new JLabel("这是一个JFrame窗体");		j1.setHorizontalAlignment(JLabel.CENTER);		myPanel2.add(j1);		JButton b1 = new JButton("弹出对话框");		b1.setBounds(10, 10, 100, 21);		b1.addActionListener(new ActionListener() {			@Override			public void actionPerformed(ActionEvent e) {				// TODO Auto-generated method stub				new MyJDialog(MyFrame.this).setVisible(true);			}		});		myPanel2.add(b1);		this.add(myPanel2);	}	public static void main(String[] args) {		new MyFrame();			}}