ex9.11.txt

JAVA 基础例题包含了JAVA常见的问题和常见的习题

import javax.swing.*;
import java.awt.*;
import java.awt.event.*;
public class Mouse extends JFrame implements MouseListener,MouseMotionListener
{	JPanel p1=new JPanel();
   	JPanel p2=new JPanel();
		JTextArea area=new JTextArea(5,40);
		int v=ScrollPaneConstants.VERTICAL_SCROLLBAR_ALWAYS;
 		int h=ScrollPaneConstants.HORIZONTAL_SCROLLBAR_ALWAYS;
		JScrollPane jsp=new JScrollPane(area,v,h);
   	public Mouse()
		{	super("鼠标移动事件例子");
   		Container c=getContentPane();
			c.add("North",jsp);
   		c.add("West",p1);
   		c.add("East",p2);
   		p1.add(new JLabel("这是第一个面板",JLabel.CENTER));
   		p2.add(new JLabel("这是第二个面板",JLabel.CENTER));
   		p1.setBackground(Color.blue);
  			p1.addMouseListener(this);
   		p1.addMouseMotionListener(this);
   		p2.setBackground(Color.green);
   		p2.addMouseListener(this);
			p2.addMouseMotionListener(this);
			addWindowListener(new Win());
			setSize(300,300);
			show();
  		}
		public void mousePressed(MouseEvent e)
		{	if(e.getSource()==p1)
   			area.append("你在panel1("+e.getX()+","+e.getY()+")按下鼠标\n");
   		else
				area.append("你在panel2("+e.getX()+","+e.getY()+")按下鼠标\n");
 		}
		public void mouseClicked(MouseEvent e)
		{	if(e.getSource()==p1)
				area.append("你在panel1("+e.getX()+","+e.getY()+")点击鼠标\n");
     		else
		 		area.append("你在panel2("+e.getX()+","+e.getY()+")点击鼠标\n");
		}
		public void mouseEntered(MouseEvent e)
		{	if(e.getSource()==p1)
				area.append("鼠标进入Panel1\n");
			else
     			area.append("鼠标进入Panel2\n");
		}
		public void mouseExited(MouseEvent e)
		{	if(e.getSource()==p1)
				area.append("鼠标退出Panel1\n");
   		else
				area.append("鼠标退出Panel2\n"); 
		}
		public void mouseReleased(MouseEvent e)
		{	area.append("释放鼠标\n");
		}
		public void mouseDragged(MouseEvent e)
		{	area.append("鼠标拖动("+"e.getX()"+","+e.getY()+")\n");
		}
		public void mouseMoved(MouseEvent e){}
		public static void main(String args[])
		{	new Mouse();
		}
}
class Win  extends WindowAdapter					//实现关闭窗口的功能
{	public void windowClosing(WindowEvent e)
		{	System.exit(0);
		}
}