577     public static long toUnsignedLong(short x) {

   577     public static long toUnsignedLong(short x) {

   578         return ((long) x) & 0xffffL;

   578         return ((long) x) & 0xffffL;

   579     }

   579     }

   580 

   580 

   581     /** use serialVersionUID from JDK 1.1. for interoperability */

   581     /** use serialVersionUID from JDK 1.1. for interoperability */

   582     private static final long serialVersionUID = 7515723908773894738L;

   583     private static final long serialVersionUID = 7515723908773894738L;

   583 }

   584 }