GUI 2.10 AWT 键盘监听事件

2.10 键盘监听

public class TestKey {
    public static void main(String[] args) {
        new MyKey();
    }
}
class MyKey extends Frame{
    public MyKey() {
        setBounds(200,200,500,500);
        setVisible(true);
        //添加键盘构造器
        addKeyListener(new KeyAdapter() {
            //键盘按下事件
            @Override
            public void keyPressed(KeyEvent e) {
                super.keyPressed(e);
                int keyCode = e.getKeyCode();
                if(keyCode == KeyEvent.VK_UP){
                    System.out.println("你按下了上键");
                }
            }
        });
    }
}