📄 imagewriter.java
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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); }}
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