What are simple rules that a Primary key class has to follow

Interview Candidate
Jul 15th, 2005
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Ashok

Jun 27th, 2005

Implement the equals and hashcode methods.

Prashanth

Jul 15th, 2005

The One Rule is that your primary key class must be serializable and follow the rules for Java Object serialization.

Sailaja

Sep 20th, 2005

Primary key class has to meet the following requirements
?         The access control modifier of the class is public.
?         All fields are declared as public.
?         The class has a public default constructor.
?         The class implements the hashCode() and equals(Object other) methods.

The class is serializable