mouseeventdemo.java

学习参考,java基本语法练习,包括一些常用的技巧

//鼠标事件演示程序
import java.awt.*;
import java.awt.event.*;
import javax.swing.*;
public class MouseEventDemo extends JFrame implements MouseListener,MouseMotionListener
{   
	int intX,intY;
	JPanel pnlMain;
	JLabel lblX,lblY,lblStatus;
	JTextField txtX,txtY,txtStatus;
	GridLayout glMain;
	public MouseEventDemo()
	{
		pnlMain=new JPanel();
		getContentPane().add(pnlMain);
		glMain=new GridLayout(3,2);
		pnlMain.setLayout(glMain);
		lblX=new JLabel("当前鼠标X坐标:");
		lblY=new JLabel("当前鼠标Y坐标:");
		lblStatus=new JLabel("当前鼠标状态:");
		txtX=new JTextField(5);
		txtY=new JTextField(5);
		txtStatus=new JTextField(5);
		pnlMain.add(lblX);
		pnlMain.add(txtX);
		pnlMain.add(lblY);
		pnlMain.add(txtY);
		pnlMain.add(lblStatus);
		pnlMain.add(txtStatus);
		//定义、绑定鼠标事件监听器对象
		addMouseListener(this);
		addMouseMotionListener(this);
	 	setTitle("鼠标事件演示");
	 	setSize(250,150);
	 	setVisible(true);
	 }
	 //重写MouseActionlistener接口中所有方法
 	public void mouseClicked(MouseEvent me)	
 	{
 	}
 	public void mousePressed(MouseEvent me)	
 	{
 		txtStatus.setText("鼠标被按下!");
 	}
 	public void mouseEntered(MouseEvent me)	
 	{
 		txtStatus.setText("鼠标移入!");
 	}
 	public void mouseExited(MouseEvent  me)	
 	{
 		txtStatus.setText("鼠标移出!");
 	}
 	public void mouseReleased(MouseEvent  me)
 	{
 		txtStatus.setText("鼠标被释放!");
 	}
	 //重写MouseMotionActionlistener接口中所有方法
    public void mouseMoved(MouseEvent me)
 	{
 		intX=me.getX();
 		intY=me.getY();
 		txtX.setText(String.valueOf(intX));
 		txtY.setText(String.valueOf(intY));
 	}
 	public void mouseDragged(MouseEvent me)	{}	
	public static void main(String args[])
	{
	 	MouseEventDemo med=new MouseEventDemo();
	}
}