NullNode extends AbstractJsonNode implements IPrimitiveNode { public static NullNode getInstance() { return Instance; } NullNode(); static NullNode getInstance(); @Override StringBuilder toString(final StringBuilder sb); @Override boolean equals(final Object o); @Override NullNode canonicalize(); @Override void read(final DataInput in); @Override void write(final DataOutput out); @Override boolean isNull(); @Override Type getType(); @Override IJsonNode clone(); @Override Object getJavaValue(); @Override void copyValueFrom(final IJsonNode otherNode); @Override int compareToSameType(final IJsonNode other); @Override int hashCode(); @Override void clear(); @Override int getMaxNormalizedKeyLen(); @Override void copyNormalizedKey(final byte[] target, final int offset, final int len);  }
@Test public void shouldBeEqual() { Assert.assertEquals(NullNode.getInstance(), NullNode.getInstance()); }