mousedemo2.java

这是清华大学编写的JAVA教材中所有题目的源代码！

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

class MouseDemo  
{
	Frame f=new Frame("鼠标示例");
	TextField tf2=new TextField(20);
	
	public MouseDemo() 
	{
		f.addWindowListener(new WindowAdapter()
		{
			public void windowClosing(WindowEvent e)
			{
				System.exit(0);
			}
		});
		
		f.addMouseListener(new MouseAdapter()
		{
			public void mousePressed(MouseEvent e)
			{
				String str="";
				switch(e.getModifiers())
				{
					case InputEvent.BUTTON1_MASK:
						str="你按下了鼠标左键";
						break;
					case InputEvent.BUTTON2_MASK:
						str="你按下了鼠标中键";
						break;
					case InputEvent.BUTTON3_MASK:
						str="你按下了鼠标右键";
						break;
					case InputEvent.CTRL_MASK+InputEvent.BUTTON1_MASK:
						str="你按下了ctrl+鼠标左键";
						break;
					case InputEvent.SHIFT_MASK+InputEvent.BUTTON1_MASK:
						str="你按下了shift+鼠标左键";
						break;
					case InputEvent.ALT_MASK+InputEvent.BUTTON1_MASK:
						str="你按下了alt+鼠标左键";
						break;
				}
				tf2.setText(str);
			}
		});

		f.add(tf2,BorderLayout.SOUTH);
		f.setSize(300,200);
		f.setVisible(true);		
	}
	
	public static void main(String args[])
	{
		new MouseDemo();
	}
}