Java-GUI(鼠标事件)-键盘事件

import java.awt.*;
import java.awt.event.*;

class MouseAndKeyEvent
{
private Frame f;
private Button but;
private TextField tf;

MouseAndKeyEvent()
{
init();
}

public void init()
{
f = new Frame("my frame");

//对frame进行基本设置。
f.setBounds(300,100,600,500);
f.setLayout(new FlowLayout());

tf = new TextField(20);

but = new Button("my button");

//将组件添加到frame中
f.add(tf);
f.add(but);

//加载一个窗体上事件。
myEvent();

//显示窗体
f.setVisible(true);
}

private void myEvent()
{
f.addWindowListener(new WindowAdapter()
{
public void windowClosing(WindowEvent e)
{
System.exit(0);
}
});

tf.addKeyListener(new KeyAdapter()
{
public void keyPressed(KeyEvent e)
{
int code = e.getKeyCode();
if(!(code>=KeyEvent.VK_0 && code<=KeyEvent.VK_9))
{
System.out.println(code+"...是非法的");
e.consume();
}
}
});

//给But添加一个键盘监听。
but.addKeyListener(new KeyAdapter()
{
public void keyPressed(KeyEvent e )
{
if(e.isControlDown()&&e.getKeyCode()==KeyEvent.VK_ENTER)
System.out.println("ctrl+enter is run");

// System.out.println(KeyEvent.getKeyText(e.getKeyCode())+"..."+e.getKeyCode());
}
});

/* but.addActionListener(new ActionListener()
{
private int action = 1;
public void actionPerformed(ActionEvent e)
{
System.out.println("action ok---"+action++);
}
});

but.addMouseListener(new MouseAdapter()
{
private int count = 1;
private int clickCount = 1;
public void mouseEntered(MouseEvent e)
{
System.out.println("鼠标进入到该组件"+count++);
}
public void mouseClicked(MouseEvent e)
{
System.out.println("点击动作"+clickCount++);
}
}); */
}

public static void main(String[] args)
{
new MouseAndKeyEvent();
}
}