Can I use my program in a system with not JDK 1.4? Alternatives??

hi all,
I have written a small program as part of my uni project. It uses some libraries from JDK 1.4 eg DES and RAS encryption algorithms.
The systems that might test the program might not instlled jdk 1.4. How can I handle this probelm. Is there anyway to make my program as a package and then I be able to run it on those system or any other alternatives??
regards
rahman

Yes: write your own versions of the libraries. If you're not worried about efficiency, DES is pretty easy. Dunno about RAS. Alternatively you could get hold of the bouncycastle implementations - I know they do DES. Dunno about RAS.
goes to Google RAS

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