滚轮JAVA_java抓取鼠标事件和鼠标滚轮事件示例

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....");

}

}

}