Class.class as cache key - Generic Question

[skajotde]

Hi All

I'm writing simple cache which is based on: Java Concurrency in Practise", 09 2006, Listing 5.19 and have generic cache question.

If java.lang.Class can be key for cache ? I know that java.lang.Class doesn't implement hashCode and equals but is only one instance per JVM.

Googling like "java.lang.class key cache" or "java.lang.class equals" return nothing matters.