Did I implement equals and hashCode correctly using Google Guava?

Question

I am using hibernate and need to override equals and hashCode(). I chose to use google-guava\'s equals and hashCode helpers.

I wanted to know if I am missing something

Answer 1

You could actually use the Guava EqualsTester to test your equals and hashCode implementation:

new EqualsTester()
     .addEqualityGroup("hello", "h" + "ello")
     .addEqualityGroup("world", "wor" + "ld")
     .addEqualityGroup(2, 1 + 1)
     .testEquals();

It's in the guava testlib.

    com.google.guava
    guava-testlib
    test

Minor change to your implementation:

@Override public boolean equals(final Object obj) {
    if(obj == this) return true;
    return obj instanceof ImageEntity &&
        Objects.equal(getFilePath(), ((ImageEntity) obj).getFilePath());
}