Java Access Modifiers

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                    Access Modifiers

This is how we create security by knowing  who accesses a Class, Variable or Method .

Types Of Access Modifiers

1)Public
2)Protected
3)Default
4)Private

Public

Any class can be access from anywhere.



Protected
It is visible to the class  it is in and its subclasses and to others in the package it is in.


Default
Only the class you are in and the people in the package you are in can see.

Private
Only people in their class can see it.

Example👇
                                                                                                                                                 

















  • Here class B is Inherited  from class A.

  • Here  class D is Inherited  from  class C.

  • Here, if  class A is Private, other classes and packages cannot access it. 

  • Here , if  class A is Default, B and C classes can access it.(Same package)

  • Here , if  class C is Default, they are visible(can access) to class C,B and A.

     can't visible(can't access) to  class D. (Different package)
  • If things in class C are Protected, they are visible to  classes C,A and B.

     class D is also visible(can access).(Because a subclass and but different package)

  • If the things in class A  are Public, they are visible(can access) to classes A,B,C,E and D.



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