Restart ClassLoader

Question

I have coded a program using java.security.SecureClassLoader
i encountered following problem :
-> After Stopping A ClassLoader by making the object reference = null,
and make another object, the old ClassLoader still save a Class cache and it still valid. so even i overload loadclass() and make it so it would not look for LoadedClass ( ClassLoader.getLoadedClass()). the JVM always look for Loaded Class First .... this make imposible to :
1. Restart ClassLoader that have method like URL.setURLStreamHandlerFactory(URLStreamHandlerFactory fac) because the JVM still keep the later operation. or should i restart the JVM from the program... how is it???
Class org.me.X1 ---> do URL.setURLStreamHandlerFactory(fac)
why it is still run like
1. cl = ClassLoader(A) load org.me.X1
2. do URL.setURLStreamHandlerFactory(fac)
3. cl = null
4. cl = ClassLoader(A) load org.me.X1
5. Error in doing URL.setURLStreamHandlerFactory(fac) because can only set up in different JVM ....
how can i restart the JVM in my program?????
any body have solution???? thanx
2. Restarting different ClassLoader object that have same class name but different implementation would always shows the sooner implementation
example :
Class org.me.X1 ---> Print X (in file:/f:/X1.Class)
Class org.me.X1 ---> Print Y (in file:/f:/update/X1.Class)
why it is still run like
1. cl = ClassLoader(A) load org.me.X1(from file:/f:/X1.Class)
2. Print X
3. cl = null
4. cl = ClassLoader(A) load org.me.X1(from file:/f:/update/X1.Class)
5. Print X ( it suppose to be Print Y ) even i overload loadclass() and make it so it would not look for LoadedClass.
any body have solution???? thanx
actually i have post it in Advance Langguage Topic .... but i think it would be better to post it here

Answer 1

yup .... thanx jschell
my mistake .... forgot to remove my own Class cache ... :)
second question how do you restart JVM in a Java Program ...
I've been trying to do this because function like URL.setURLStreamHandlerFactory(factory) can only run once in a JVM ( am i right???? ). suppose i want to reload ( an run ) a class contains with any function like above function (without any previous knowledge the class contains these kind of functions) in differrent ClassLoader ( the previous ClassLoader are made null) why am i still having an error!!!
thanx
pardon for my english