Generic InternPool in Java?

Question

How would I write a generic InternPool in Java? Does it need a Internable interface?

String in Java has interning cap

Answer 1

This more sounds like that you're looking for flyweight pattern.

Flyweight is a software design pattern. A flyweight is an object that minimizes memory use by sharing as much data as possible with other similar objects

Click the link, it contains a Java example.