Main.java Source code

Introduction

Here is the source code for Main.java

Source

import java.awt.color.ColorSpace;
import java.awt.image.BufferedImage;
import java.awt.image.ColorConvertOp;
import java.io.File;
import java.net.URL;

import javax.imageio.ImageIO;

public class Main {
    public static void main(String[] args) throws Exception {
        BufferedImage master = ImageIO.read(new URL("http://www.java2s.com/style/download.png"));
        BufferedImage gray = new BufferedImage(master.getWidth(), master.getHeight(), BufferedImage.TYPE_INT_ARGB);

        ColorConvertOp op = new ColorConvertOp(ColorSpace.getInstance(ColorSpace.CS_GRAY), null);
        op.filter(master, gray);

        // new JLabel(new ImageIcon(master));
        // new JLabel(new ImageIcon(gray));
        ImageIO.write(master, "png", new File("c:/Java_Dev/master.png"));
        ImageIO.write(gray, "png", new File("c:/Java_Dev/gray.png"));
    }
}