// TestDrawFigures.java
import java.awt.*;
import javax.swing.*;
public class TestDrawFigures extends JFrame
{
	public TestDrawFigures()
	{
		setTitle("TestDrawFigures");
		this.getContentPane().add(new MyPanel());
	}
	public static void main(String[] args)
	{
		TestDrawFigures frame = new TestDrawFigures();
		frame.setSize(270,200);
		frame.setVisible(true);
	}
}
//定义可以绘制图形的面板
class MyPanel extends JPanel
{
	public void paintComponent(Graphics g)
	{
		super.paintComponent(g);
		g.drawLine(10,10,130,30);
		g.drawRect(20,35,30,40);
		g.fillRect(70,35,30,40);
		g.drawRoundRect(120,35,40,40,10,10);
		g.drawOval(20,90,30,40);
		g.fillOval(70,90,30,40);
		g.drawOval(120,90,40,40);
		int[] x = {180,250,210,190,175};
		int[] y1 = {25,50,80,40,70};
		int[] y2 = {75,100,130,90,120};
		g.drawPolygon(x,y1,x.length);
		g.fillPolygon(x,y2,x.length);
	}
}