Question

Whats this syntax useful for :

    function(String... args) 

Is this same as writing

    function(String[] args)  

with difference only while invoking this method or is there any other feature involved with it ?

Answer 1

The only difference between the two is the way you call the function. With String var args you can omit the array creation.

public static void main(String[] args) {     callMe1(new String[] {'a', 'b', 'c'});     callMe2('a', 'b', 'c');     // You can also do this     // callMe2(new String[] {'a', 'b', 'c'}); } public static void callMe1(String[] args) {     System.out.println(args.getClass() == String[].class);     for (String s : args) {         System.out.println(s);     } } public static void callMe2(String... args) {     System.out.println(args.getClass() == String[].class);     for (String s : args) {         System.out.println(s);     } }