how to override equals and hashcode method in java

Question

Why do I need to override the equals and hashCode methods in Java? I mean Why always override hashcode() if overriding equals()?

Answer 1

If you are using Eclipse it has integrated a very cool hashCode() / equals() generator. You just have to be on a class and do: right click > Source code > Generate hashCode() and equals().

Then, a window will show up and you can choose the fields to include in your methods.