Question

java中如何建立鼠标事件?

Answer 1

import javax.swing.*;
import java.awt.event.*;
public class Example6_9 implements MouseMotionListener,MouseListener,WindowListener
{
	JFrame win;
	JTextField text;
	public static void main(String[] args)
	{
		Example6_9 w=new Example6_9();
		w.toWin();
	}
	public void toWin()
	{
		win=new JFrame("实现三个接口的事例");
		win.setSize(300,200);
		win.setVisible(true);
		win.add(new JLabel("单击并拖拽鼠标"));
		text=new JTextField(30);
		win.add(text,"South");
		win.addMouseMotionListener(this);
		win.addMouseListener(this);
		win.addWindowListener(this);
	}
	public void mouseDragged(MouseEvent e)
	{
		String s="拖曳鼠标:X="+e.getX()+"Y="+e.getY();
		text.setText(s);
	}
	public void mouseEntered(MouseEvent e)
	{
		String s="鼠标进入";
		text.setText(s);
	}
	public void mouseExited(MouseEvent e)
	{
		String s="鼠标离开";
		text.setText(s);
	}
	public void windowClosing(WindowEvent e)
	{
		System.exit(0);
	}
	public void mouseMoved(MouseEvent e){}
	public void mouseClicked(MouseEvent e){}
	public void mousePressed(MouseEvent e){}
	public void mouseReleased(MouseEvent e){}
	public void windowOpened(WindowEvent e){}
	public void windowIconified(WindowEvent e){}
	public void windowDeiconified(WindowEvent e){}
	public void windowClosed(WindowEvent e){}
	public void windowActivated(WindowEvent e){}
	public void windowDeactivated(WindowEvent e){}
}