Scope.java

class Scope {

   static int first, second;

   static void pair (int second, int third) {
      Scope.first = second;
      Scope.second = third;

      /* local variable can shadow class variables */
      int first = second;    // LEGAL

      /*  local variables can't shadow formal parameters
      int second = second;  // ILLEGAL
      */

      int fourth = second;
      /*  local variables can't shadow other local variables
      int fourth = second;   // a second decl of "fourth" is ILLEGAL
      */
   }
}