executable java program and installation package

I want to make an executable program with jar and a setup program with it.
I used to use Jsmooth and NSIS. I have seen Launch4J and other tools.
Which is the best one?

I want to make a Window executable program which cannot be decompiled with reverse engineering tools.
e-genpartnersAsked:
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krakatoaCommented:
I want to make a Window executable program which cannot be decompiled with reverse engineering tools.

You will never find this. Even if the code is protected, the runtime code cannot be, and can be reverse-engineered.
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Sharon SethCommented:
As long as the class files(jar) are stored somewhere on the machine , ppl can always use a decompiler and try to reengineer.
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krakatoaCommented:
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Sharon SethCommented:
A Java obfuscator is your closest bet now , but it has its own headaches.
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