Java varargs method param list vs. array

Question

Varargs:

public static void foo(String... string_array) { ... }

versus

Single array param:

public static void bar(         


        

Answer 1

A vararg is simple syntactic sugar for an array.

if you call foo("abc", "def", "ghi"); then compiler will call it as foo(new String[] {"abc", "def", "ghi"});

compiler will create one new array and pass it to foo(). One can't have both foo(String...) and foo(String[]). Since both are functionally same.