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       #Post#: 12--------------------------------------------------
       Want to learn more about 
   DIR By: asim roy
       Date: September 14, 2023, 6:14 am
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       Encapsulation refers to data hiding that results in managed
       access to data using methods. It is one of the object-oriented
       languages that provides the above three functions. Contains
       several built-in keywords that can be used to communicate
       between parent and child classes. Keyword is one such keyword.
       Study courses on. What is the keyword in ? Many times subclasses
       need to interact with parent classes and methods. Sometimes
       instance variables of the parent class are needed in subclass
       instances. In this case you can use the keyword which provides
       access to parent class variables and methods using subclass
       instances.
       Uses in In There are basically three uses for the keyword. These
       uses are explained in detail in the next section. Used to access
       parent class member variables. Consider a scenario Phone Number
       List
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       where there is a parent class and a
       child class . The parent class has an integer type variable
       named . The class also contains a member variable named . If you
       access a member of a class you will access an instance of the
       class. This can best be explained with the help of an example
       Popular Classes Consider a parent class with the following class
       definition public class shape public area.
       [img]
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       A class that extends a class looks like this public class
       extends public area public return area Now if from class
       instance calls the method the returned area will be the value of
       the area instance of the class. However the parent class also
       has as a member variable. The following code snippet
       demonstrates this System. Output The above code will display on
       the console screen  which is the area of the subclass . But what
       if you need the area of the parent class? How can I get the
       value of this region instance? The subclass also contains an
       instance member with the same name. In this case the keyword
       needs to be used.
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