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I have a BaseEntity class which is a superclass of all JPA entities in my application. @MappedSuperclass public abstract class BaseEntity implements Serializable { private static final long serialVersionUID = -3307436748176180347L; @Id @GeneratedValue(strategy = GenerationType.IDENTITY) @Column(name = "ID", nullable=false, updatable=false) protected long id; @Version @Column(name="VERSION", nullable=false, updatable=false, unique=false) protected long version; } Every JPA entity extends from BaseEntity and inherit id and version attributes of BaseEntity . What is the best way here to implement equals() and hashCode() methods in BaseEntity ? Every subclass of BaseEntity will inherit equals() and hashCode() behaviour form BaseEntity . I want to do something like this: public boolean equals(Object other){ if (other instanceof this.getClass()){ //this.getClass() gives class object but instanceof operator expect ClassType; so it does not work return this.id == ((BaseEntity)other).id; } else { return false; } } But instanceof operator needs classtype and not class object; that is: if(other instanceof BaseEntity) this will work as BaseEntity is classType here if(other instanceof this.getClass) this will not work because this.getClass() returns class object of this object

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