Java抓取鼠标事件和滚轮事件实例，java抓取滚轮实例,package demo

Java抓取鼠标事件和滚轮事件实例，java抓取滚轮实例,package demo

package demo;import java.awt.event.MouseEvent;import java.awt.event.MouseListener;import java.awt.event.MouseWheelEvent;import java.awt.event.MouseWheelListener;import javax.swing.JButton;import javax.swing.JFrame;import javax.swing.JPanel;public class MouseDemo extends JFrame  implements MouseListener,MouseWheelListener{    static int chang=400,kuang=400;    public MouseDemo(){    JPanel j=new JPanel();    JButton jb=new JButton("click");    j.add(jb);    this.add(j);    this.setVisible(true);    this.setSize(chang,kuang);    jb.addMouseListener(this);    this.addMouseWheelListener(this);    }    public   void mouseClicked(MouseEvent e){        //左击事件        if(e.getButton()==MouseEvent.BUTTON1)            System.out.println("zuo ji shi jian ....");        //滑轮按下事件        if(e.getButton()==MouseEvent.BUTTON2)            System.out.println("zhong  ji shi jian ....");        //右击事件        if(e.getButton()==MouseEvent.BUTTON3)            System.out.println("you ji shi jian ....");    }    public static void main(String[] args) {        // TODO Auto-generated method stub        new MouseDemo();    }    @Override    public void mouseEntered(MouseEvent e) {        // TODO Auto-generated method stub    }    @Override    public void mouseExited(MouseEvent e) {        // TODO Auto-generated method stub    }    @Override    public void mousePressed(MouseEvent e) {        // TODO Auto-generated method stub    }    @Override    public void mouseReleased(MouseEvent e) {        // TODO Auto-generated method stub    }    @Override    //利用滚轮事件将窗口放大和缩小    public void mouseWheelMoved(MouseWheelEvent e) {        // TODO Auto-generated method stub        if(e.getWheelRotation()==1){            chang+=10;            kuang+=10;            this.setSize(chang,kuang);            this.validate();            System.out.println("滑轮向前。。。。");        }        if(e.getWheelRotation()==-1){            chang-=10;            kuang-=10;            this.setSize(chang,kuang);            this.validate();            System.out.println("滑轮向后....");        }    }}