Java library with more data structures
<p>Can anyone point me to some good Java library (jar) that has some more data structures other than what comes as part of standard Java language. I want support for things like - Tuple, Pair, Tries, Binomial/Fibonacci trees and may be Graphs. [Yes, I know writing them on my own will be lot of fun, but I am reluctant to reinvent the wheel right now]</p>
