How to remove everything from an ArrayList in Java but the first element

Question

I am new to java programming, been programing in php so I\'m used to this type of loop:

int size = mapOverlays.size();
for(int n=1;n

        

Answer 1

I think it would be faster to create a new ArrayList with just the first element inside. something like :

E temp = mapOverlays.get(0);
mapOverlays = new ArrayList().add(temp);