Logic used in ensureCapacity method in ArrayList

Question

I was going through the source code of ArrayList. I came across the method ensureCapacity() which increases the capacity of the data array used internally. In that, the new capa

Answer 1

It grows the list by 50% every time it is called, to prevent allocating the world too soon. The + 1 is meant to catch situations where the list was inititalised with a size of 1 :)