Converting string arrays into Map

Question

I have two string arrays keys and values

String[] keys = {a,b,c,d};

String[] values = {1,2,3,4};

What is the fastest way to convert them i

Answer 1

Faster than this?

Map map = new HashMap<>();

if(keys.length == values.length){
    for(int index = 0; index < keys.length; index++){
        map.put(keys[index], values[index]);
    }
}