public class AddOne {
  public static void main(String[] args) {
  int x;
     x = 17;
     System.out.println(x);
     printPlus1(x);
     System.out.println(x);
  }
  
  public static void printPlus1(int val){
     val = val + 1;  
     //NOTE: Due to how the int data type works, 
     //   "x" back in the calling method doesn't change!
     System.out.println(val);
  }
}

//Copyright 2010-2012 : Evan Golub