### Question:
HServerAddress implements WritableComparable<HServerAddress> { public HServerAddress() { super(); } HServerAddress();  HServerAddress(InetSocketAddress address);  HServerAddress(final String hostname, final int port);  HServerAddress(HServerAddress other); String getBindAddress(); int getPort(); String getHostname(); String getHostnameAndPort(); InetSocketAddress getInetSocketAddress(); @Override String toString(); @Override boolean equals(Object o); @Override int hashCode(); void readFields(DataInput in); void write(DataOutput out); int compareTo(HServerAddress o);  }### Answer:
@Test public void testHServerAddress() { new HServerAddress(); }