Hibernate entity equals

hibernate-entity-equals.java

@Entity
@Table(name = "MY_TABLE")
public class MyTable extends AbstractEntity {
   @Id
   @GeneratedValue(strategy = GenerationType.AUTO)
   private Long id;
   private String value1;
   private String value2;
   ...
   public boolean equals(Object obj) {
     if (obj == null || !(obj.getClass().equals(this.getClass()))) {
       return false;
     }
     return getId().equals(((GenericEntity ) obj).getId());
   } 
}