shapes1.java

本书结合作者丰富的实践经验和深厚的理论基础

import java.awt.*;
import java.awt.event.*;
import java.awt.geom.*;
import java.awt.image.*;
import javax.swing.*;
public class Shapes1 extends JFrame {
 public Shapes1(){
   super( "Drawing 2D shapes" );
   setSize(250, 160 );
   setVisible( true );
 }
 public void paint( Graphics g ) {
   super.paint( g );
   Graphics2D g2d = ( Graphics2D ) g;
   g2d.setPaint( new GradientPaint( 5, 30, Color.cyan, 35,100, Color.red) );
   g2d.fill( new Ellipse2D.Double( 5, 30, 65, 100 ) );
   g2d.setPaint( Color.red );
   g2d.setStroke( new BasicStroke( 10.0f ) );
   g2d.draw( new Rectangle2D.Double( 80, 30, 65, 100 ) );
   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
   g2d.setPaint( new TexturePaint(buffImage, new Rectangle( 10, 10 ) ) );
   g2d.fill( new RoundRectangle2D.Double(155, 30, 75, 100, 50, 50 ) );   
 }
 public static void main( String args[] ) {
   Shapes1 application = new Shapes1();
   application.setDefaultCloseOperation(JFrame.EXIT_ON_CLOSE );
 }
}