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Polymorphism - defines the ability of a single variable of a provided type to be used to reference objects of different types, and automatically call the method that is specific to the type of object the variable references. In short way, polymorphism is a bottom-up method call. The benefit of polymorphism is that it is very simple to add new classes of derived objects without dividing the calling code. That uses the interfaces or polymorphic classes. When you send a message to an object even though you don't know what specific type it is, and the right thing occur, that's called polymorphism. The process used by object-oriented programming languages to implement polymorphism is defined dynamic binding.
Support for Web and Enterprise Web Applications Java offers an extensive support for the development of web and enterprise applications Servlets, JSP, Applets, RMI, JDBC, EJBs
The Naming class gives methods for storing and obtaining references to remote objects in the remote object registry.
What are the different messaging paradigms JMS supports? Ans) Publish and Subscribe i.e. pub/suc and Point to Point i.e. p2p.
What is the importance of static variable? Static variables are class level variables where all objects of the class refer to the similar variable. If one object alters the val
Write a program to perform multiplication and division in java? Of course Java could also do multiplication and division. Because most keyboards don't have the times and divisi
Implement a program that can compute your taxes (assume year 2012, as- sume a form 1040EZ). The form should ask for your ling status (single, married), income, deductions and cred
Are constructors inherited ? Can a subclass call the parent class constructor and When?
What restrictions are placed on method overriding? Overridden methods must have the similar name, argument list, and return type. The overriding method may not limit the access
Integration: Neo4J, OpenGeo, Ikanow Project Description: I have an ongoing project to loosely integrate a variety of existing Open Source products: OpenGeo (geospatial server
What is JavaServer Faces event and listener model? Ans) A mechanism for verifying how events emitted by JavaServer Faces UI components are handled. This model is based on the Ja
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