I find it ironic that you're laughing your ass off at the poor, ignorant Java kids when your grasp of the situation is so deficient.
First off, permgen is not just class definitions. One of the largest consumers of permgen space is intern'd Strings. Secondly, despite its name permgen does have garbage collection in modern VMs; it's not as frequent as what is done to reclaim heap but it does happen. Thirdly, the issue with Eclipse is that it doesn't set a correct pergmen size at startup due to an acknowledged bug, this isn't a case where it's eating up too much space because of a funky classloader.
No good programmer thinks that resource management is unimportant, regardless of language.