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How to save the cropped image given the original image and the coordinates to crop

we are using java 1.3 for developing a j2ee application using struts framework.to upload the photo i am using <html:file> tag in the jsp. Only jpegs are accepted.
after uploading the photo, there is a option for cropping. in the front end, i am using Prototype JavaScript Image Cropper UI. a demo is available on net. the link is

http://www.defusion.org.uk/demos/060519/cropper.php?demoType=preview&image=castle&formSubmit=Load+demo

using the tool, i can get the coordinates of the selected area.i am sending this coordinates to my action. After this point, i am stuck.

I have the original photo saved on the server. I have the coordinates of the cropped area. now i have to create a new photo(cropped photo) from the original photo. please help me to create the cropped photo and save on save on the server.
I can not use ImageIO since i am using java 1.3 version
can not use Swing since its a J2ee application
Dont want to use applets since the UI is already done and all that i want is to create a new jpeg file to save the cropped image. kindly help.
0
divyasindhu
Asked:
divyasindhu
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1 Solution
 
CEHJCommented:
See https://jaistuff.dev.java.net/code/operators.Crop.html Ignore the Swing stuff - it's just for demo purposes

JAI is usable with JDK >= 1.3.
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divyasindhuAuthor Commented:
JAI is not part of core Java. I do not want to install it. Hence i managed to solve it using BufferedImage. Here is the code which might be useful for other users:

import java.awt.image.BufferedImage;
import java.io.FileInputStream;
import java.io.FileOutputStream;
import java.io.IOException;

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

......
......
......
FileInputStream in = new FileInputStream("E:\\sample.jpg");
FileOutputStream op = new FileOutputStream("E:\\cropped.jpg");
JPEGImageDecoder decoder = JPEGCodec.createJPEGDecoder(in);
JPEGImageEncoder encoder = JPEGCodec.createJPEGEncoder(op);

BufferedImage bufImage = decoder.decodeAsBufferedImage();
BufferedImage cropped = bufImage.getSubimage(10,20,40,30);
JPEGEncodeParam param = encoder.getDefaultJPEGEncodeParam(cropped);
encoder.encode(cropped, param);

in.close();
op.close();
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CEHJCommented:
It's probably better to use classes that are supported than ones that are not, and are also undocumented
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divyasindhuAuthor Commented:
I do agree with you. But we can not change our environment. So we had to follow this.
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