### Question:
LWM2MID implements Comparable<LWM2MID> { @Override public boolean equals(Object obj) { if (obj instanceof LWM2MID) { LWM2MID that = (LWM2MID) obj; return Objects.equals(this.stringId,that.stringId); } return false; } LWM2MID(String stringId);  LWM2MID(int intId); static final LWM2MID from(0); static final LWM2MID from(1); static final LWM2MID from(2); static final LWM2MID from(3); static final LWM2MID from(4); static final LWM2MID from(5); static final LWM2MID from(6); static final LWM2MID from(7); static final LWM2MID from(8); static final LWM2MID from(9); static final LWM2MID from(10); static final LWM2MID from(11); static final LWM2MID from(12); static final LWM2MID from(13); static final LWM2MID from(14); static final LWM2MID from(15); static final LWM2MID from(16); static LWM2MID create(); static LWM2MID from(String stringId); static LWM2MID from(int intId); String stringValue(); int intValue(); @Override boolean equals(Object obj); @Override int hashCode(); @Override String toString(); @Override int compareTo(LWM2MID that);  }### Answer:
@Test public void testEquals() { assertFalse(new LWM2MID(null).equals(null)); assertTrue(Objects.equals(new LWM2MID(null), new LWM2MID(null))); assertTrue(Objects.equals(new LWM2MID(1), new LWM2MID(1))); assertTrue(Objects.equals(new LWM2MID("alma"), new LWM2MID("alma"))); assertFalse(Objects.equals(new LWM2MID("alma"), new LWM2MID("korte"))); }