How to shrink an .PNG file to a specified size

I want to shrink .PNG file to a specified width and height.
I need that too be done in SWING itself.
I've tried with AWT and PJA(PureJavaAWT). IT's giving me some error.
Please reply me ASAP
Thanks & Regards
venkatesh

Yes, java.lang.Runtime.exec().
Read this carefully before you do:
http://www.javaworld.com/javaworld/jw-12-2000/jw-1229-traps.html
Don't write a line of code before you're reviewed and understood the article completely. - MOD

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Juffer Real Estate Inc.
605-360-7703
[email protected]
Date: Tue, 1 Apr 2014 10:13:35 -0700
From: [email protected]
To: [email protected]
Subject: file is huge when combined or changed to PDF, how do I get the file to a normal size to print?
    Re: file is huge when combined or changed to PDF, how do I get the file to a normal size to print?
    created by Test Screen Name in Creating, Editing & Exporting PDFs - View the full discussion
Sorry, I'm lost.First I thought this was about page size. But you say it isn't. You say it's about file size. You've combined files of 494 + 441 = 935 KB, and you get 944 KB. This seems fine and you say it is fine. So what is the problem? Are you now on still a third meaning of huge, about size on screen?
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How to shrink an .PNG file to a specified size

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