### Question:
Version implements Comparable<Version> { @Override public boolean equals(Object o) { if (o instanceof Version) { Version other = (Version)o; return compareTo(other) == 0; } return false; } Version(String versionStr); int compareTo(Version other); @Override String toString(); @Override boolean equals(Object o); @Override int hashCode();  }### Answer:
@Test public void testEquals() { assertTrue(new Version("1.0").equals(new Version("1.0"))); assertFalse(new Version("1.0").equals(new Version("1.1"))); assertFalse(new Version("0.8").equals(new Version("0.10"))); assertTrue(new Version("1.0.1").equals(new Version("1.0.1"))); assertFalse(new Version("1.0.0").equals(new Version("1.0.1"))); }