Variable argument or Varargs methods from Java 5 with Example - Programming Tutorial

Varargs | Variable Argument - javatpoint
Advantage of Varargs:

We don't have to provide overloaded methods so less code.

There can be only one variable argument in the method.

Variable argument (varargs) must be the last argument.

1) Every call to varargs method require an anonymous array to be created and initialized which could affect performance in time critical application. There is an alternative of varargs method to achieve better performance. suppose you have a variable argument method sum(int... num) and its called with 2 parameters on 90% of time

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