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

Use Prefuse Tables. They support as many indices as you want, are fast (indices are TreeMaps), and have nice filtering options (boolean filters? no problem!). No database required, tested with large data-sets in many information visualization applications.

In their raw form, they are not as convenient as standard containers (you need to deal with rows and columns), but you can surely write a small wrapper around that. Plus, they plug nicely into UI components such as Swing's JTables.