Java Dictionary value of type tuple

Question

I want a Dictionary (HashTable, Map, ...) that has one key and several values.

I.e. I want something like

HashTable<Key, [value1, value2]>

How do I get this?

Answer 1

The easiest way I think:

Map<Key, List<Value>>

If you would rather just have a tuple (pair, 3, or ...) you can create a Pair class.

class Pair<E,F, ...> {

    public E one;
    public F two;
    ...

}

And then use a Map like so:

Map<Key, Pair<Value, Value>>