Main.java Source code

Java tutorial

Introduction

Here is the source code for Main.java

Source

import java.awt.Color;
import java.awt.Graphics;
import java.awt.image.BufferedImage;
import java.awt.image.ColorConvertOp;
import java.io.File;

import javax.imageio.ImageIO;

public class Main {
    public static void main(String[] args) throws Exception {
        int size = 120;
        int pad = 10;
        BufferedImage bi = new BufferedImage(size, size, BufferedImage.TYPE_INT_RGB);
        Graphics g = bi.createGraphics();
        g.setColor(Color.WHITE);
        g.fillRect(0, 0, size, size);
        g.setColor(Color.YELLOW);
        g.fillOval(pad, pad, size - (2 * pad), size - (2 * pad));
        g.dispose();

        BufferedImage image2 = new BufferedImage(bi.getWidth(), bi.getHeight(), BufferedImage.TYPE_BYTE_GRAY);

        ColorConvertOp op = new ColorConvertOp(bi.getColorModel().getColorSpace(),
                image2.getColorModel().getColorSpace(), null);
        op.filter(bi, image2);
        ImageIO.write(image2, "png", new File("c:/Java_Dev/image2.png"));
    }
}