why does java suck?

I've noticed in the short time I've been reading this board that there's a lot of java bashing, so I was wondering why people actually think it is so bad. I'm no java fan, but I've used it for some stuff before and it didn't seem terrible to me. An argument used to be that it runs slow as a guro-fied loli, but they've improved a lot in that aspect.

Please give good reasons, rather than stuff like "it's for certified professional consultants" or whatever you guys say.

Lack of generic programming in Java, at the method level, means that if you want to implement your own heapsort algorithm you either need to copy-paste it for all the key types (i.e. sorting by int, by float etc) or wrap them in the idiotic Numeric implementations (Integer, Float etc) and suffer the indirect function call overhead.

Most of the time the performance freaks go with the copy-pasting. And we should all know what copy-pasting does to maintainability.