drawtest.java

this is my java Test

import java.awt.*;
import java.awt.geom.*;
import javax.swing.*;
public class DrawTest
{
	public static void main(String[] args)
	{
		DrawFrame frame=new DrawFrame();
		frame.setDefaultCloseOperation(JFrame.EXIT_ON_CLOSE);
		frame.setVisible(true);
	}
}

class DrawFrame extends JFrame{
	public DrawFrame()
	{
		setTitle("DrawTest!");
		setSize(DEFAULT_WIDTH,DEFAULT_HEIGHT);
		DrawPanel panel=new DrawPanel();
		add(panel);
	}
	public static final int DEFAULT_WIDTH=400;
	public static final int DEFAULT_HEIGHT=400;
}

class DrawPanel extends JPanel
{
	public void paintComponent(Graphics g)
	{
		super.paintComponent(g);
		Graphics2D g2=(Graphics2D) g;
		
		double leftX=100;
		double topY=100;
		double width=200;
		double height=150;
		
		Rectangle2D rect=new Rectangle2D.Double(leftX,topY,width,height);
		g2.draw(rect);
		
    Ellipse2D ellipse=new Ellipse2D.Double();
    ellipse.setFrame(rect);
    g2.draw(ellipse);

		g2.draw(new Line2D.Double(leftX,topY,leftX+width,topY+height));
		double centerX=rect.getCenterX();
		double centerY=rect.getCenterY();
		double radius=150;
		Ellipse2D circle=new Ellipse2D.Double();
		circle.setFrameFromCenter(centerX,centerY,centerX+radius,centerY+radius);
		g2.draw(circle);
	}
}