Multiple indexes for a Java Collection - most basic solution?

Question

I\'m looking for the most basic solution to create multiple indexes on a Java Collection.

Required functionality:

• When a Value is removed, all index en

Answer 1

I've written a Table interface that includes methods like

V put(R rowKey, C columnKey, V value) 
V get(Object rowKey, Object columnKey) 
Map column(C columnKey) 
Set columnKeySet()
Map row(R rowKey)
Set rowKeySet()
Set> cellSet()

We'd like to include it in a future Guava release, but I don't know when that would happen. http://code.google.com/p/guava-libraries/issues/detail?id=173