Prettiest & ugliest part of the java codebase

In the interests of promoting good coding practices (whatever that may mean), I'd like to see peoples' opinions on what constitutes the prettiest & ugliest parts of the java codebase.
As far as pretties go, I dunno...
Integer.java perhaps???
Uglies on the other hand; that's easy....
ResourceBundle.java
Unfortunately, I tend to only look at code when it is difficult to work with, or performs voodoo. So I'm a lot better at nominating uglies, and this is unfair. Regardless, I'd love to hear your thoughts!

I feel there are so many good things about java that sometimes I think how easy my life has become being a java developer. Thinking about any other languages is out of question for me now as am pretty much at home with programming when it comes to java, it was never like that with C++. May be I dont know a lot many good things about other languages but honestly speaking - I dont care!
Although am relatively new to this language compared to you guys and there are so many things I still dont know about java, but I guess the reason why I feel so great about it is the way it is organized...I mean like look at java.util package - simple, sweet and useful!! How about Matcher and Pattern classes?!
And what do you say about javax.jms, I guess this is one of the best APIs for messaging.... you got it all man you just have to do it the way I should be done and thats it!
May be I can only appreciate utilities provided by Java but I guess being a developer thats all I want.
As with things we dont like either they are improving or may be there was no other way for them to be what they are right now.
Look at the total number of posts in the forum - it shows how popular & useful java is!!

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