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Convert Image Formats

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

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


Download this example.

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Posted on: March 14, 2008

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