Question

java 鼠标监听

java 中对鼠标点击监听

想整个JAVA小程序中都能够调用怎么写

给个例子 谢谢 分不多 不好意思了

Answer 1

//这是应用程序，跟java小程序的大体思路还是差不多的，你改改

import javax.swing.*;
import java.awt.*;
import java.awt.event.*;
import javax.swing.border.Border;

/**
*建立个界面，可以加载本机中图片。
*加载后可以通过鼠标点击获得图片上任意点坐标。
*/
public class MyPicture extends JFrame implements MouseListener{
private JLabel tipLabel;

/**
*main()
*/
public static void main(String[] args){
MyPicture frame = new MyPicture();
frame.setDefaultCloseOperation(JFrame.EXIT_ON_CLOSE);
frame.setVisible(true);
}

/**
*constructor
*/
public MyPicture(){
setSize(800, 600);//根据要求调整大小
setLocation(100,100);
setTitle("获得图片上任意点坐标");
setResizable(false);

Container con=getContentPane();

ImageIcon bgIcon=new ImageIcon("bgpic.jpg");//注意图片的路径
ImagePanel backpicPanel=new ImagePanel(bgIcon);
backpicPanel.addMouseListener(this);
con.add(backpicPanel,BorderLayout.CENTER);

tipLabel=new JLabel("--------------------提示：坐标依次打印在屏幕上!--------------------");
con.add(tipLabel,BorderLayout.NORTH);
}

/**
*
*/
public void mousePressed(MouseEvent e){
int x=e.getX();
int y=e.getY();
String message="("+x+","+y+")";
tipLabel.setText(message);
System.out.println(message);

}

public void mouseReleased(MouseEvent e){

}

public void mouseEntered(MouseEvent e){

}

public void mouseExited(MouseEvent e){

}

public void mouseClicked(MouseEvent e){

}

}

/**
*类ImagePanel，用于添加背景图片
*/
class ImagePanel extends JPanel{
private Image img;
public ImagePanel (ImageIcon imageIcon){
img=imageIcon.getImage();
}

public void paintComponent(Graphics g){
super.paintComponent(g);
g.drawImage(img,0,0,this);
}

}

Answer 2

这是个显示鼠标坐标的鼠标事件
import java.awt.*;
import java.awt.event.*;
public class TestMouse implements MouseListener,MouseMotionListener{
public static void main(String args[ ]){
TestMouse t=new TestMouse();
t.go();
}
void go(){
Frame f=new Frame("Canvas");
f.setSize(300,300);
f.addMouseListener(this);
f.addMouseMotionListener(this);
f.setVisible(true);
}
public void mouseMoved(MouseEvent ev){
int x1=ev.getX();
int y1=ev.getY();
System.out.println("mouse moved"+x1+" "+y1);

}
public void mouseDragged(MouseEvent ev){

System.out.println(ev.paramString());

}
public void mouseClicked(MouseEvent ev){
int x1=ev.getX();
int y1=ev.getY();
int c=ev.getClickCount();
System.out.println("mouse clicked"+x1+" "+y1+" "+c);

}
public void mousePressed(MouseEvent ev){

System.out.println(ev.paramString());

}
public void mouseReleased(MouseEvent ev){

System.out.println("mouseReleased");

}
public void mouseEntered(MouseEvent ev){

System.out.println("mouseEntered");

}
public void mouseExited(MouseEvent ev){

System.out.println("mouseExited");

}
}