Convert to JPEG Format,How to Convert Image Format,Example to Convert Image to JPEG Format Using Java Swing

Convert Image Formats

In this example we are converting image of any format into jpg format.

Import java.io.* package and class javax.imageio.ImageIO and java.awt.BufferedImage. The package java.io.* is used for input and output operations through data streams, serialization and the file system. Classes ImageReader and ImagrWriter inherit the static methods from the class javax.imageio..ImageIO for reading and writing the images respectively. The class java.awt.BufferedImage extends Image class and implements WritableRenderedImage interface. The class BufferedImage is used to access an image.

The methods used in this example are:
write(RenderedImage im, String formatName, File output): This method is used to write an image. This method takes three parameters first one is Renderedimage, second is format in which the image is to be converted and last is name of the file on which the image is to be writen. The format name may be gif, jpg, png etc.

read(File input) : This is used to read an image.

Code Description:

This example reads the image name passed at the command prompt for converting the image into the jpg format. In this example we are reading the image from system by using read() method of ImageIO class. We are using write() method for conversion of an image of any format into the jpg format.

Here is the code of the program :


import java.io.*;

import javax.imageio.ImageIO;

import java.awt.image.BufferedImage;

public class GIFToJPG

{

public static void main(String a[]){

  try{  

  System.out.println("Enter image name\n");

  BufferedReader bf=new BufferedReader(new

 InputStreamReader(System.in));

  String imageName=bf.readLine();

  File input = new File(imageName);

  BufferedImage image = ImageIO.read(input);

  System.out.println("Enter the output image 

name(.jpg):\n");

  String imageName1=bf.readLine();  

  File output = new File(imageName1);

  ImageIO.write(image, "jpg", output);

  System.out.println("Your image has been 

converted successfully");

}catch(FileNotFoundException e){

  System.out.println("Error:"+e.getMessage());

}catch(IOException e)

  {

  System.out.println("Error:"+e.getMessage());

  }

  catch(Exception e){

  System.out.println(e.getMessage());

  }



}

}

Input on DOS Prompts :

C:\image>javac GIFToJPG.java

C:\image>java GIFToJPG
Enter image name

rajeshxml2.gif
Enter the output image name(.jpg):

raju.jpg
Your image has been converted successfully

Input image:rajeshxml2.gif

Output of The Example:raju.jpg