Help with Java JAR file opbfuscation.

I am looking for a free (no $) for use on commercial java code
code obfuscation program, which can beat the Jode decompiler.
I have tried Proguard, and I have tried Joga
(using Jode itself for obfuscation is too complex for my purposes).
Is there a simple way to beat decompilers like Jode and DJ,
without a financial outlay if possible,
given how easy it is to decompile Java bytecode?

All interesting remarks, everyone!
Proguard doesn't prevent decompilation on something very small, like a jar
with one or two classes.
Proguard is free(no money) for use over commercial java code,
and is itself a java jar, so it will run on Windows,
Mac and Linux platorfms.
It also correctly obfuscates and links external java libraries
and references to the man jar/class in a very systematic way.
I'm just wondering if there is something similar to proguard on licensing arrangements,
working over small amounts of code, and beating
the decompilers (like Jode).
I have used the code obfuscation that Dr.Java performs on it's classes during compilation.
And while the resulting class file tested does confound Jode,
JD-Gui ("Java decompiler") instantly beats the results of Dr.Java.
Considering how easy it is to break class files, I was figuring that either Sun
or another would offer a free/open source/cheap way to secure these class files,
without resulting to Zelix Klassmaster, and instead of leaving a mess
of decompiled source code, prevent decompilation of java byte
code even happening at all?
Any ideas?
Edited by: Zac1234 on Jul 5, 2009 10:55 PM

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import java.io.FileOutputStream;
import java.io.InputStream;
import java.io.OutputStream;
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import javax.xml.parsers.DocumentBuilder;
import javax.xml.parsers.DocumentBuilderFactory;
import javax.xml.transform.Transformer;
import javax.xml.transform.TransformerFactory;
import javax.xml.transform.dom.DOMSource;
import javax.xml.transform.stream.StreamResult;
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import com.sap.aii.mapping.api.StreamTransformationException;
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Could you please let us know if this code was useful to you or not?
Regards
Anupam
Edited by: anupamsap on Dec 15, 2011 9:43 AM

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