java例程练习（键盘事件）

import java.awt.*; import java.awt.event.*; public class TestKeyEvent { public static void main(String[] args) { new KeyFrame().launchFrame(); } } class KeyFrame extends Frame { public void launchFrame() { setSize(200,200); setLocation(200,200); this.addKeyListener(new MyKeyMonitor()); this.setVisible(true); } class MyKeyMonitor extends KeyAdapter { public void keyPressed(KeyEvent e) { int keyCode = e.getKeyCode(); if(keyCode == KeyEvent.VK_UP) { System.out.println("UP"); } } } }