imagewriter.java

来自「这是一个用jsp+Oracle开发的联系人客户关系管理系统！」· Java 代码 · 共 32 行

package com.ideas.servlet;

import java.nio.channels.FileChannel;
import java.io.*;
import java.awt.*;
import java.awt.image.BufferedImage;
import javax.imageio.*;
import com.sun.media.imageio.stream.*;

public class ImageWriter {
  public static void main(String args[]) throws Exception {
	int WIDTH = 300;
	int HEIGHT = 400;

	File file = new File("d:\\zjm.jpg");

	BufferedImage image = ImageIO.read(file.toURL());

	BufferedImage img =
		new BufferedImage(WIDTH, HEIGHT, BufferedImage.TYPE_INT_BGR);
	Graphics2D g = (Graphics2D) img.getGraphics();
	g.setColor(Color.RED);
	g.fillRect(0, 0, 300, 400);

	g.setColor(Color.blue);
	g.fillOval(100, 100, 200, 200);
	// g.setComposite(AlphaComposite.getInstance(AlphaComposite.CLEAR, 0.0f));
	g.dispose();
	ImageIO.write(img, "jpg", file);
  }
}