j_graphics.java.bak

一个十分好的java基础学习的课件

// ////////////////////////////////////////////////////////
// 
// J_Graphics.java
// 
// Created by Jun-Hai Yong,    on XX xx, xxxx (Date)
// ////////////////////////////////////////////////////////
// Readme:
// An example of Graphics.
// ////////////////////////////////////////////////////////
// Using this example, please explicitly refer to the book:
//     Jun-Hai Yong. Programming in Java. 
//     Beijing: Tsinghua University Press, 2004.
// 使用本例子，请注明引用:
//     雍俊海. Java 程序设计. 北京: 清华大学出版社, 2004.
// Please note that the author and publisher make no 
// warranty of any kind on the examples provided.
// ////////////////////////////////////////////////////////

import java.awt.*;
import java.awt.geom.*;
import java.awt.image.*;
import javax.swing.*;

public class J_Graphics extends JApplet
{

    public void paint(Graphics g)
    { 
        Graphics2D g2d= (Graphics2D)g;

        // Fill a circle with gradient paint
        g2d.setPaint( new GradientPaint( 5, 30, Color.red, 35, 100, Color.yellow, true ) );  
        g2d.fill( new Ellipse2D.Double( 20, 20, 100, 100 ) );

        // Create a texture
        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.blue );   // draw in black
        gg.drawRect( 1, 1, 6, 6 );   // draw a rectangle
        gg.setColor( Color.green );  // 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
 
        // Fill a rectangle with the texture
        g2d.setPaint( new TexturePaint( buffImage, new Rectangle( 10, 10 ) ) );
        g2d.fill( new Rectangle2D.Double( 160, 20, 100, 100 ) );
        
    } // End of method: paint 

} // End of class: J_Graphics