Multiple Keys to Single Value Map Java

Question

I think my question is similar to this one: How to implement a Map with multiple keys? but with an important difference. In that question (if my understanding of it is corre

Answer 1

Apache Commons Collections has MultiKey.

import org.apache.commons.collections4.keyvalue.MultiKey;

Map myMap = new HashMap();
myMap.put(new MultiKey(key1, key2), value);

myMap.get(new MultiKey(key1, key2));

It has the benefit of creating N-dimensional arrays from a Map.