// Example that shows that variables in different scopes
// have no relation to one another even if they have the
// same name.
public class ReturnExample {
   public static void main(String[] args) {
      int x = 1;
      
      // "Use it or lose it".  The return value is not
      // saved into a variable, used in another expression,
      // or outputted, so it gets lost.
      addOne(x);
      
      // This outputs 'x = 1'.  Do you understand why?
      System.out.println("x = " + x);
   }
   
   // This method adds one to the parameter.  This "x"
   // gets incremented by 1, but it has no relation to
   // the "x" in main.
   public static int addOne(int x) {
      x = x + 1;
      return x;
   }
}