Changing CLASSPATH from within a program

i need to start rmi registry in my program and i want is to bind to the right CLASSPATH. i know how to do it from the command line, but how do i set it from the program

i need to start rmi registry in my program and i want
is to bind to the right CLASSPATH. i know how to do
it from the command line, but how do i set it from the
programYou can't change it. Your choices for loading libraries
1. Use classpath (either env var or command line option)
2. Use the ext directory.
3. Use a custom class loader - as the previous poster suggested.

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