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What is Externalizable interface?
Externalizable is an interface which have two methods readExternal and writeExternal. These methods give you a control over the serialization mechanism.
Therefore if your class executes this interface, you can customize the serialization process by executing these methods.
how to create overloded method?
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The Action Class is type of the Model and is a wrapper around the business logic. The purpose of Action Class is to change the HttpServletRequest to the business logic. To use the
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how to write a program to assign value of variable age and print if person is major.
The Object class is the highest-level class in the Java class hierarchy. The Class is used to show the classes and interfaces that are loaded by a Java program..
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