what if I write ( static public void ) instead of ( public static void ) ?

it will execute, order of modifier is programmer's wish

No problem execution will be done perfectly.... But coding always have procedure so, in that case we need provide appropriate declaration of the program and then only we able understand easily. also other developer also understand easily.

No difference

It does not matter. It will work.

Obviously it will execute correctly but public static is the standard way, if you are going for interview then you must have to be clear that what are these PUBLIC STATIC VOID and what the use of these? public : it is a access specifier that means it will be accessed by publically. static : it is also access modifier that means is that you can access this method without having an instance of the class. void : it is a return type i.e it does not return any value. main : it is a main method Java only starts running a program with the specific public static void main(String args[])

no problem

Nothing will happen !

It was nothing the program compiles and runs properly.