You know when you just think 'Oh FFS'

I've just had one of those moments thanks to an article on Chaotic Java (if you're interested in Java then have a look through the archives as it's all gold). Anyway the article is about Java GC & there was a section about using object reference queues instead of a finalize block (a good idea anyway) and there was a line:

I made NativeImage and Image implement Closeable, a new interface in Java 5 for IO classes that need to be closed.

What?!? There's a ... a ... interface called Closeable. Oh yes there is introduced in Java 1.5 and it's been added to just about every IO class. Wish I had know about that before writing the same try finally block for Readers, Writers, InputStreams & OutputStreams. I know it's a case of 20 lines instead of 3 but it seems annoying. I wonder how many more of these interfaces there are in Java 5 & 6 that could have saved me a few more lines of code. 

Oh well