Drawing Shapes in Java 2D

// Demonstrating some Java2D shapes
import javax.swing.*;
import java.awt.event.*;
import java.awt.*;
import java.awt.geom.*;
import java.awt.image.*;

public class Shapes extends JFrame 
     {
     public Shapes()
         {
         super( "Drawing 2D shapes" );
        
         setSize( 425, 160 );
         show();
     }
    
     public void paint( Graphics g )
         {
         // create 2D by casting g to Graphics2D
         Graphics2D g2d = ( Graphics2D ) g;
        
         // draw 2D ellipse filled with a blue-yellow gradient
         g2d.setPaint( new GradientPaint( 5, 30, // x1, y1
         Color.blue, // initial Color
         35, 100, // x2, y2
         Color.yellow, // end Color
         true ) ); // cyclic
         g2d.fill( new Ellipse2D.Double( 5, 30, 65, 100 ) );
        
         // draw 2D rectangle in red
         g2d.setPaint( Color.red );
         g2d.setStroke( new BasicStroke( 10.0f ) );
         g2d.draw( new Rectangle2D.Double( 80, 30, 65, 100 ) );
        
         // draw 2D rounded rectangle with a buffered background
         BufferedImage buffImage = new BufferedImage( 10, 10, BufferedImage.TYPE_INT_RGB );
        
         Graphics2D gg = buffImage.createGraphics();
         gg.setColor( Color.yellow ); // draw in yellow
         gg.fillRect( 0, 0, 10, 10 ); // draw a filled rectangle
         gg.setColor( Color.black ); // draw in black
         gg.drawRect( 1, 1, 6, 6 ); // draw a rectangle
         gg.setColor( Color.blue ); // draw in blue
         gg.fillRect( 1, 1, 3, 3 ); // draw a filled rectangle
         gg.setColor( Color.red ); // draw in red
         gg.fillRect( 4, 4, 3, 3 ); // draw a filled rectangle
        
         // paint buffImage onto the JFrame
         g2d.setPaint( new TexturePaint( buffImage, new Rectangle( 10, 10 ) ) );
         g2d.fill( new RoundRectangle2D.Double( 155, 30, 75, 100, 50, 50 ) );
        
         // draw 2D pie-shaped arc in white
         g2d.setPaint( Color.white );
         g2d.setStroke( new BasicStroke( 6.0f ) );
         g2d.draw( new Arc2D.Double( 240, 30, 75, 100, 0, 270, Arc2D.PIE ) );
        
         // draw 2D lines in green and yellow
         g2d.setPaint( Color.green );
         g2d.draw( new Line2D.Double( 395, 30, 320, 150 ) );
        
         float dashes[] = { 10 };
        
         g2d.setPaint( Color.yellow );
         g2d.setStroke( new BasicStroke( 4, BasicStroke.CAP_ROUND, BasicStroke.JOIN_ROUND, 10, dashes, 0 ) );
         g2d.draw( new Line2D.Double( 320, 30, 395, 150 ) );
     }
    
     public static void main( String args[] )
         {
         Shapes app = new Shapes();
        
         app.addWindowListener( new WindowAdapter() 
             {
             public void windowClosing( WindowEvent e )
                 {
                 System.exit( 0 );
             }
         });
     }
}