Java Graphics_2
package com.han;import java.awt.Container;import java.awt.Graphics;import javax.swing.JButton;import javax.swing.JFrame;import javax.swing.JLabel;import javax.swing.JPanel;public class Graphics_2 extends JFrame {/** * */private static final long serialVersionUID = 2196445899859855213L;private static final int OVAL_WIDTH = 80;private static final int OVAL_HEIGHT = 80;@SuppressWarnings("serial")public Graphics_2() {// TODO Auto-generated constructor stubContainer container = getContentPane();JPanel panel = new JPanel() {@Overridepublic void paint(Graphics g) {super.paint(g); // for the one containing children components, this is necessary.g.drawOval(10, 10, OVAL_WIDTH, OVAL_HEIGHT);g.drawOval(80, 10, OVAL_WIDTH, OVAL_HEIGHT);g.drawOval(150, 10, OVAL_WIDTH, OVAL_HEIGHT);g.drawOval(50, 70, OVAL_WIDTH, OVAL_HEIGHT);g.drawOval(120, 70, OVAL_WIDTH, OVAL_HEIGHT);}};container.add(panel);JLabel label = new JLabel("Five circles");panel.add(label);JButton button = new JButton("HAN Gaowen");panel.add(button);}/** * @param args */public static void main(String[] args) {// TODO Auto-generated method stubGraphics_2 frame = new Graphics_2();frame.setDefaultCloseOperation(JFrame.EXIT_ON_CLOSE);frame.setTitle("Draw circles");frame.setSize(300, 200);frame.setVisible(true);}}