What is difference between :-

Question

public static void main(String [ ] args)
and
public static void main(String... args)

Answer 1

There is no difference in functionallity in these two. But in respect of conventions use the visibility operators, like public, private, first followed by static.

And don't forget the return type!

This is how it should look:

public static void main (String[] args){}

The parameter String[] args is a normal array. String... args are called varargs. In this case there is no difference. 

a method that took an arbitrary number of values required you to create an array and put the values into the array prior to invoking the method
public static String format(String pattern, Object... arguments);

Answer 2

... is used for variadic parameters. It is just syntactic sugar for T[] where T is the Type.