package com.a.b; //我想实现，当我点击一个按钮时，这个frame里可以画出实心的矩形

import java.awt.Color;

import java.awt.Graphics;

import java.awt.event.ActionEvent;

import java.awt.event.ActionListener;

import java.awt.event.MouseAdapter;

import java.awt.event.MouseEvent;

import java.awt.event.MouseListener;

import java.util.Random;

import javax.swing.*;

class Biao extends JFrame {

	int x, y;

	JButton jb;

	public Biao() {

		ini();

		this.setBackground(Color.red);// 不就

		this.setDefaultCloseOperation(3);

		this.setSize(500, 500);

		// 设置界面

		// 看到冒，默认窗体是不显示，但是我没有设置

		this.setVisible(true);

		jb = new JButton("yes");

		// jb.addActionListener(this);

		jb.addActionListener(new A());

	}

	public class A implements ActionListener {

		public void actionPerformed(ActionEvent e) {

		}

	}

	Random r = new Random();

	public void paint(Graphics g) {

		g.setColor(new Color(r.nextInt(255), r.nextInt(255), r.nextInt(255)));

		g.drawOval(x, y - 44, 44, 44);// 画一个空心圆

		// 这里需要剪个半径，否则圆会默认跑出来

		// g.fillRect(x, y, 44, 44);

		g.fillOval(x, y, 55, 55);// 画圆

		// g.fillOval(x, y, 44, 33);//画个椭圆试试

		g.drawLine(x, y, 44, 44);// 画直线

	}

	public void ini() {

		// z

		// 实现当我鼠标点击时，会画图 //这是一个匿名的内部类

		this.addMouseListener(new MouseListener() {// 这个方法是自动导入的

			@Override

			public void mouseReleased(MouseEvent e) {

				// TODO Auto-generated method stub

			}

			@Override

			public void mousePressed(MouseEvent e) {

				// TODO Auto-generated method stub

			}

			@Override

			public void mouseExited(MouseEvent e) {

				// TODO Auto-generated method stub

			}

			@Override

			public void mouseEntered(MouseEvent e) {

				// TODO Auto-generated method stub

			}

			@Override

			public void mouseClicked(MouseEvent e) {

				if (e.getClickCount() >= 2) {

					x = e.getX();

					y = e.getY();

					repaint();// 重新画图啊

				}

			}

		});

	}

}

public class South {

	public static void main(String[] args) {

		new Biao();

	}

}