How to write an image to file – Java ImageIO

By mkyong | January 17, 2010 | Updated : August 30, 2012 | Viewed : 206,014 | +182 pv/w

The “javax.imageio.ImageIO” is a handy class to read and write image into local system. In this example, we show you how to use “ImageIO” to read an image from an URL and write it into three file formats :

“jpg”
“gif”
“png”

Full example to demonstrate the ImageIO usage.


package com.mkyong.image;

import java.awt.image.BufferedImage;
import java.io.File;
import java.io.IOException;
import java.net.URL;
import javax.imageio.ImageIO;

public class WriteImage 
{	
    public static void main( String[] args )
    {
    	BufferedImage image = null;
        try {
          
            URL url = new URL("http://www.mkyong.com/image/mypic.jpg");
            image = ImageIO.read(url);
            
            ImageIO.write(image, "jpg",new File("C:\\out.jpg"));
            ImageIO.write(image, "gif",new File("C:\\out.gif"));
            ImageIO.write(image, "png",new File("C:\\out.png"));
            
        } catch (IOException e) {
        	e.printStackTrace();
        }
        System.out.println("Done");
    }
}

Reference

http://java.sun.com/j2se/1.4.2/docs/api/javax/imageio/ImageIO.html

About the Author

mkyong

Founder of Mkyong.com, love Java and open source stuff. Follow him on Twitter. If you like my tutorials, consider make a donation to these charities.

Comments

newest oldest most voted

Guest

sanjana

Nice tutorial. It helped me a lot.

Guest

anonymous

is there any other alternative without using ImageIO.write

Guest

nextwebinsight

It is not working for the url – https://lh5.ggpht.com/FJsccpuphUKRxZTFzTiXXgTO4Vqi8IRmW6oRLmzZpY90UVmi1EwC9Y9fyYidPnPCxE0=w300-rw

Please let me know if any fix.

Guest

Yashwanth

Hi i am not able write the pixel values to rgb image properly.. after writing the pixel value to image by using ImageIO.write..the pixel value have changed while reading it..

Guest

RAFEE SHAIK

I am not able read the image from ur; “http://www.hdwallsource.com/img/2014/7/harley-davidson-wallpaper-16885-17439-hd-wallpapers.jpg”

Guest

aCard Marring

Thanks for sharing this nifty code :DD

Guest

ram

Thanks,

but it is not woking for me. please help me, i am getting error shown in below.

javax.imageio.IIOException: Can’t get input stream from URL!
at javax.imageio.ImageIO.read(Unknown Source)
at Image.main(Image.java:17)

Caused by: java.net.ConnectException: Connection refused: connect
at java.net.DualStackPlainSocketImpl.connect0(Native Method)
at java.net.DualStackPlainSocketImpl.socketConnect(Unknown Source)
at java.net.AbstractPlainSocketImpl.doConnect(Unknown Source)

thanks for your understand

Guest

Shinu Varghese

Hi,
How do you incorporate scribling of text onto an image in java…..

Guest

Shinu Varghese

I have a java project in which i have to scribble text using a writing pad onto an existing image in a label…
please help me on the above case……

Guest

walid

After converting the image to 0101 and encrypted, I can not bring it back as an image please help

Guest

Amit

I am trying to upload a file path through action class to the server from local system.I have done it statically if(customerBean.getUploadFileFileName() != null) { String filePath = “E:\\photos\\customer\\”; String photoPath = “E:/photos/customer/”+customerBean.getUploadFileFileName(); File fileToCreate = new File(filePath, customerBean.getUploadFileFileName()); if(!fileToCreate.exists()) { setErrormessage(“Please check if Uploaded Photo exists in the Customer Folder”); return “failure”; } status = custDAO.insertUser(customerBean,photoPath); } Could you please help me out with a working code where i can upload images dynamically on the server and store the image path in server datatbase. Thanks, Amit.

Guest

ramesh

Respected sir,
iam doing project on visual cryptography
i.e: based on two images generate another image. here one image is orinal image with text. another is indecipheralble form. generate another image is also indecipherable form.both are combine whatever the text in original image. that will be visible. plz help me sir. plz

Guest

ramesh

based on two images generate another image here one image is orinal image with text another is indecipheralble form generate another image is also indecipherable form. plz help me sir

Guest

ramesh

sir plz help me iam doing project on visual cryptography.i want code in java

Guest

Fernando

When i user an image *.png and try to get the *.bmp the file generated is a 0 bytes file.

May be you could help me to know why is this happening??

Thanks

Guest

tom costa

Above code works on my machine , thanks for sharing

Guest

Jason

Exception in thread “main” java.lang.IllegalArgumentException: im == null!

Below is the code :

 

BufferedImage bImageFromConvert = ImageIO.read(new ByteArrayInputStream(binaryStream));		
ImageIO.write(bImageFromConvert, "jpg", new File("D:\\"+ fileName +".jpg"));

Guest

swastik

Hi,
For Java its working, while I try to put the code for a managed bean in JSF in NetBean IDE the file is created under build\web directory instead of web. Can you please help on this

FacesContext con = FacesContext.getCurrentInstance();
ExternalContext contx = con.getExternalContext();
String path = contx.getRealPath(“/”);
URL url = new URL(“http://www.mkyong.com/image/mypic.jpg”);
image = ImageIO.read(url);

ImageIO.write(image, “jpg”,new File(path +”out.jpg”));

Thanks