BE THE CODER > Java > Image IO > How to get image width, height and format

Java Image IO provides pluggable architecture for accessing images transparently. It is simple, flexible and allows us to plugin various image readers and writers with ease. The following example shows how to get image width, height and format.

File Name :	com/bethecoder/tutorials/imageio/GetImageInfoTest.java
Author :	Sudhakar KV
Email :	[email protected]


package com.bethecoder.tutorials.imageio;



import java.io.File;

import java.io.IOException;

import java.util.Iterator;



import javax.imageio.ImageIO;

import javax.imageio.ImageReader;

import javax.imageio.stream.ImageInputStream;





public class GetImageInfoTest {



  /**

   * @param args

   * @throws IOException 

   */

  public static void main(String[] args) throws IOException {



    File file = new File("C:/Temp/stpatricks_08.gif");

    ImageInputStream iis = ImageIO.createImageInputStream(file);

        Iterator<ImageReader> readers = ImageIO.getImageReaders(iis);



        if (readers.hasNext()) {

          //Get the first available ImageReader

            ImageReader reader = readers.next();

            reader.setInput(iis, true);



            System.out.println("Format : " + reader.getFormatName());

            System.out.println("Width : " + reader.getWidth(0) + " pixels");

            System.out.println("Height : " + reader.getHeight(0) + " pixels");

        }

  }



}