MacAddress { protected MacAddress() { } protected  MacAddress();  MacAddress(long addr); long toLong(); byte[] toByteArray(); String toString(String separator); @Override String toString(); static MacAddress getMacAddress(); static void main(String[] args); static long parseLong(String s); static int parseInt(String s); static short parseShort(String s); static byte parseByte(String s);  }
@Test public final void testMacAddress() throws Exception { MacAddress mac = new MacAddress(); assertEquals(0L,mac.toLong()); }