TIOBE - Java Coding Standard

Rule: Basic17

Synopsis:	An empty statement (semicolon) not part of a loop
Language:	Java
Severity Level:	3
Category:	Basic

Description:

An empty statement (aka a semicolon by itself) that is not used as the sole body of a for loop or while loop is probably a bug. It could also be a double semicolon, which is useless and should be removed.

public class MyClass {
   public void doit() {
      // this is probably not what you meant to do
      ;
      // the extra semicolon here this is not necessary
      System.out.println("look at the extra semicolon");;
   }
}