public class ChuangKao extends JFrame public static void main(String[] args) ChuangKao a = new ChuangKao(); a.setSize(500, 400); a.setVisible(true); } public ChuangKao() JButton jb = new JButton("弹出窗口"); add(jb); jb.addActionListener(new ActionListener() public void actionPerformed(ActionEvent arg0) JFrame jf = new JFrame("弹出的窗口..."); jf.setSize(300, 200); jf.setVisible(true); } }); }} 想弹出多少个窗口都行