### Question:
UnsignedUtils { public static int toUnsigned(byte num) { return num & 0xFF; }  static int toUnsigned(byte num); static int toUnsigned(short num); static long toUnsigned(int num);  }### Answer:
@Test public void test() { short s = -9563; assertTrue(UnsignedUtils.toUnsigned(s) == 55973); }