java Programming Glossary: mammals

http://stackoverflow.com/questions/1184295/java-covariance

... ... public static void main String args List Mammal mammals getMammals compilation error Why does the assignment result.. Mammal List Giraffe giraffes new List Giraffe List Mammal mammals giraffes not allowed mammals.add new Zebra would add a Zebra.. new List Giraffe List Mammal mammals giraffes not allowed mammals.add new Zebra would add a Zebra to a list of Giraffes share..

mixing joined and single table inheritance and querying for all objects

http://stackoverflow.com/questions/8494367/mixing-joined-and-single-table-inheritance-and-querying-for-all-objects

class Mammal extends Animal ... @Entity @Table name mammals @PrimaryKeyJoinColumn name mammal_id @DiscriminatorValue value.. public class Dog extends Mammal ... @Entity @Table name mammals @PrimaryKeyJoinColumn name mammal_id @DiscriminatorValue value.. Cat extends Mammal ... So I have 2 tables animals and mammals. This configuration is working unless I don't completely understand..