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Repository pattern is usefult for decoupling entity operations form presentation, which allows easy mocking and unit testing. “The Repository will ...
A final class can't be extended ie., final class may not be subclassed. A final method can't be overridden when its class is inherited. You can't chan ...
When a class defines a method using the same name, return type, and arguments as a method in its superclass, the method in the class overrides the met ...
One should make sure that all the included objects are also serializable. If any of the objects is not serializable then it throws a NotSerializableEx ...
The purpose of finalization is to give an unreachable object the opportunity to perform any cleanup processing before the object is garbage collected. ...
The Iterator interface is used to step through the elements of a Collection .

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The transaction attribute specifies how the Container must manage transactions for a method when a client invokes the method via the enterprise bean ...