Java Tutorial

Abstract class

In design,  want the base class to present only an interface for its derived classes. This means,  don’t want anyone to actually instantiate an object of the base class.  Only want to upcast to it ...
Java Tutorial

Static variable management in java

  The purpose of static keyword in java is  memory management. Static keyword can be apply to the  variables, methods and blocks. The static keyword belongs to the class than instance ...
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