package com.aa;

import java.awt.Color;

import java.awt.Graphics;

import java.awt.event.MouseAdapter;

import java.awt.event.MouseEvent;

//内部类，和接口的实现

import javax.swing.*;

//现在实现用鼠标点击一下，画一个圆

class Circle extends JFrame {

	int x, y;

	public Circle() {

		ini();

		this.setVisible(true);

		this.setSize(400, 400);

		this.setDefaultCloseOperation(3);

	}

	public void paint(Graphics g) {

		g.setColor(Color.red);

		// g.fillOval(x, y, 23, 23);

		g.drawOval(x, y, 32, 32);

	}

	void ini() {

		this.addMouseListener(new MouseAdapter() {

			public void mouseClicked(MouseEvent m) {

				x = m.getPoint().x;

				y = m.getPoint().y;

				repaint();// 重画

			}

		});// 匿名类写法

	}

}

public class LEI {// 主类是作为测试类

	public static void main(String[] args) {

		Circle c = new Circle();

	}

}