Access modifier and inheritance

Access modifier and inheritance

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  ACCESS MODIFIER AND INHERITANCE
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  DEFINATION OF ACCESSMODIFIER • It is simply a keyword in java that provides accessibility of a class and its members. • Set in the access level to method, variable, classes and constructors. • Classification of access modifier are:- • Private • Protected • Public
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  PRIVATE ACCESS MODIFIER •It is the most restrictive access level whereby they are accessible only within the class itself. • A superclass private members are not inherited by its subclasses. • Example of Private Access Modifier is:
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  PROTECTED ACCESS MODIFIER •It can be accessed by only the class of same package and the subclass present in any package. • It has visibility in sub classes and Classes cannot be declared as protected. • Example of Protected Access Modifier:
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  PUBLIC ACCESS MODIFIER •It can be access with any classes. • It is widest scope among all other modifiers. • Example of Public Access Modifier is:
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  SCOPE OF ACCESSMODIFIERS IN TABULAR FORM Access Modifier Within Class Within Package Outside Package By Subclass only Outside Package Private Y N N N Protected Y Y Y N Public Y Y Y Y
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  ACCESS MODIFIER ANDINHERITANCE • Inherits features of parent’s object/class to the child’s object/class. • Extends keyword is used to inherit the features of superclass.
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