Convert clauses to CNF

I want to transform my clauses to conjuctive normal form. Clauses are changed each time i run my program, so i guess i need to built-in a tool in my program to do this for me. Is there any suggestionn how to 开发者_开发百科implement this?? i also found some libraries like:

Orbital library. I am new to logic programming and i have never used them so, its quite difficult to get through them. I also tried to find an example to clear things up, but nothing came up. I am builting my program in java language. Please help...

Thanks in advance!

can you use some of this code? http://aima-java.googlecode.com/svn/trunk/aima-core/src/main/java/aima/core/logic/fol/CNFConverter.java

# Non-members may check out a read-only working copy anonymously over HTTP. svn checkout http://aima-java.googlecode.com/svn/trunk/ aima-java-read-only