I bet you didn’t knew about this:
cool 
unfortunatly, I didn’t know about this link while visiting java lessons at university - could have been very amousing.
Getting rather old and inaccurate now.
Every language has its limitations and a degree of obscurity. We can be much better programmers if we know these limitations precisely. Some of the issues don’t apply to the latest java version, like the IAQ says. I let you guess what those are. 