Which method is called? (Integer… a) vs. (int a, int b)

Question

I just found out about a very interesting Java trick:

void method1(Integer... a){
}

So you can give this method as many integers as you want.

Answer 1

A call will made to method1(int a, int b) . Just checked byte code for this - here Integer... a is actually an Integer[] a For a detailed conversion check these assignment conversion