Question

Is it possible to take objects like a Vector and make it have multiple generics? I know it’s possible when you create a class, but will other classes that come with the normal Java API (like Vectors, Stack, etc.) can have multiple generics?

For example:

Vector<String, Integer> vect = new Vector<String, Integer>();
vect.add("Hello!", 0);

From this, one index would have two values, a String and Integer.

Thanks in advance!!

Answer 1

The Vector class implements a growable array of objects, I think you are looking for map, java.util.Map<key,value>, implementation of map is HashMap<k,v>

Map<Integer,String> map = new HashMap<Integer,String>();
map.put(1,"str");