方法重写的参数问题
package com.yixq.GUI;import java.awt.Color;import java.awt.Frame;import java.awt.event.*;public class WindowEvent { public static void main(String[] args) { new MyFrame5("abce"); }}class MyFrame5 extends Frame { MyFrame5(String s) { super(s); setLayout(null); setBounds(300, 300, 300, 200); setBackground(Color.cyan); setVisible(true); this.addWindowListener(new Monitor5()); } class Monitor5 extends WindowAdapter { @Override public void windowClosing(java.awt.event.WindowEvent e) { setVisible(false); System.exit(-1); } }}