how to do watermarking on images using java and jsp

watermarking on jep using jsp or java free source code of java watermarking on images(bmp,jpeg,png)


dear friends we can make watermarking on images or logos using java .this code is useful for somebody want to write their logo or their company name on their images published on their website.this watermarking code is free and you can use this code for education purpose only. this watermarking code can be applied on jsp also.

/**
* @author John.J
www.johnjustin.tk
*
*/

 

import java.awt.AlphaComposite;
import java.awt.Color;
import java.awt.Font;
import java.awt.Graphics;
import java.awt.Graphics2D;
import java.awt.Image;
import java.awt.image.BufferedImage;
import java.io.File;
import java.io.FileOutputStream;
import java.util.Random;

import javax.imageio.ImageIO;
import javax.swing.ImageIcon;

import com.sun.image.codec.jpeg.JPEGCodec;
import com.sun.image.codec.jpeg.JPEGEncodeParam;
import com.sun.image.codec.jpeg.JPEGImageEncoder;

public class Watermark
{
public static void main(String[] args)
{
try
{
Font font;
File _file = new File("C:/car.jpg");
Image src = ImageIO.read(_file);
int width = src.getWidth(null);
int height = src.getHeight(null);
System.out.println("X = "+width+" and Y = "+height);
BufferedImage image = new BufferedImage(width, height
, BufferedImage.TYPE_INT_RGB);
Graphics g = image.createGraphics();
g.drawImage(src, 0, 0, width, height, null);
//    g.setBackground(Color.white);
g.setColor(Color.red);
g.setFont(new Font("Verdana", Font.BOLD, 20));

g.drawString("www.johnjustin.tk",  5, height - (new
Font("Arial", Font.BOLD, 20)).getSize() / 2 - 5);
g.dispose();

FileOutputStream out = new FileOutputStream("C:/car2.jpg");
JPEGImageEncoder encoder = JPEGCodec.createJPEGEncoder(out);
encoder.encode(image);
out.close();
} catch (Exception ee)
{
System.out.println("Error Occurred : "+ee);
}
}
}

how to use this code?
copy the input image to here car.jpg in your hard disk here iam copying car.jpg in c drive
write your watermarking inside
g.drawString("www.johnjustin.tk", 5, height - (new Font("Arial", Font.BOLD, 20)).getSize() / 2 - 5);


you can specify the color and font size inside the g.drawstring method

the image before water marking using java is below




after adding watermark see the given figure below

Posted in: watermarking in java,watermarking in jsp