Java Programming Code Examples

Drawing Shapes in Java import javax.swing.*; import java.awt.event.*; import java.awt.*; import java.awt.geom.*; public class Shapes2 extends JFrame { public Shapes2() { super( "Drawing 2D Shapes" ); setBackground( Color.yellow ); setSize( 400, 400 ); show(); } public void paint( Graphics g ) { int xPoints[] = { 55, 67, 109, 73, 83, 55, 27, 37, 1, 43 }; int yPoints[] = { 0, 36, 36, 54, 96, 72, 96, 54, 36, 36 }; Graphics2D g2d = ( Graphics2D ) g; // create a star from a series of points GeneralPath star = new GeneralPath(); // set the initial coordinate of the General Path star.moveTo( xPoints[ 0 ], yPoints[ 0 ] ); // create the star--this does not draw the star for ( int k = 1; k < xPoints.length; k++ ) star.lineTo( xPoints[ k ], yPoints[ k ] ); // close the shape star.closePath(); // translate the origin to (200, 200) g2d.translate( 200, 200 ); // rotate around origin and draw stars in random colors for ( int j = 1; j <= 20; j++ ) { g2d.rotate( Math.PI / 10.0 ); g2d.setColor(new Color( ( int ) ( Math.random() * 256 ),( int ) ( Math.random() * 256 ), ( int ) ( Math.random() * 256 ) ) ); g2d.fill( star ); // draw a filled star } } public static void main( String args[] ) { Shapes2 app = new Shapes2(); app.addWindowListener(new WindowAdapter() { public void windowClosing( WindowEvent e ) { System.exit( 0 ); } }); } }