Hi, I was looking at IntHashMap in wicket trunk.
I couldn't figure out what it does.The implementation of hashcode for Integer is value, and the autoboxing of int to Integer comes out to Integer.valueOf(int) which is implemented as an array lookup for Integers in the range of -128 to 127, and beyond that it's just new Integer(int). Page ids start at zero for each page in each session so most of the time they will be between zero and 127.
Br, Tuomas
