Is there a difference between main(String args[]) and main(String[] args)?

Semantically, they are identical. However, I'd recommend using the latter syntax (String[] args) when declaring arrays. The former syntax is there mainly for compatibility with C syntax.

Since String[], as a whole, is the type of the object in Java, it's more consistent and clear not to split it up.

A similar question addresses the [] after method argument list.

There's no difference, but putting the brackets after the type (String[]) is the more common practice in Java.

Both of them are absolutely the same. Please refer to Java Language Specification (JLS) to see the syntax used in java.

String[] args or String args[] will create an array (reserves a place in memory)with no size and name args.

Let us Consider:

String [] x;

putting the [] after the name. Why? because it avoids subtle problems like this:-

String x [] , y; //x[] is an array but y is a String
String [] x y ; //two arrays x[] and y[] both