Structure (key, value) with repetition Java

Question

Is there a java structure like HashMap but that allows to repeat the key as well as the value ?

For example:

HashMap<Integer, String> hmap = new HashMap<>();
map.put(1, "Sport");
map.put(1, "Football");
map.put(2, "Football");
map.put(1, "Handball");

And as a result:

<1,"Sport">
<1,"Football">
<2,"Football">
<3,"Handball">

Any help would be most appreciated.

Thanks, Nadhmanovic

Answer 1

There is not a structure like this built into the language. But you can use Guava's Multimap.