ex.java

实例精华

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

public class Ex
{
	Frame f;
	Button[] b;
	Panel p;
	TextField t;
	int i=0;
	int j=0;
	public Ex()
	{
		f = new Frame("鬼子进村");
		
		String[] s={"小张","小王","小刘","小李","小白","小黄"};
		b = new Button[s.length];
		p=new Panel();
		p.setBackground(Color.orange);
		t = new TextField(10);
		for (int i = 0; i<s.length; i++)
		{
			
			b[i]= new Button(s[i]);
			b[i].addActionListener(new ActionListener(){
				
				
				public void actionPerformed(ActionEvent e)
				{
					
					String s = e.getActionCommand();
				    t.setText("鬼子进"+s+"家了");	
					
				}
				
				
				});
			p.add(b[i]);
			
			
		}
		
		p.addMouseListener(new MouseAdapter(){
			
			public  void mouseEntered(MouseEvent e)
			{
				
				i=j;
				t.setText("鬼子跑了");
				
			}
			
			
			
			});
		
		f.add(p,BorderLayout.NORTH);
		f.add(t,BorderLayout.SOUTH);
		f.addMouseListener(new MouseAdapter(){
			
			public  void mouseEntered(MouseEvent e)
			{
				
				i++;
				t.setText("鬼子第"+i+"次进村");
				
			}
			public void mouseExited(MouseEvent e)
			{
				
				j=i;
				
				i=0;
				
				t.setText("鬼子跑了");
				
			}
			
			
			});
			
		f.addMouseMotionListener(new MouseMotionAdapter(){
			
			
			public void mouseDragged(MouseEvent e)
			{
				
				int x = e.getX();
				int y = e.getY();
				
				t.setText("鬼子的位置X:"+x+"Y:"+y);
				
				
			}
			
			
			});	
			
		f.addWindowListener(new WindowAdapter(){
			
			public void windowClosing(WindowEvent e)
			
			{
				
				
				System.exit(0);
			}
			
			
			
			});
		f.setSize(200,200);
		f.setVisible(true);
		
	}

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