Core Java Interview questions
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Access specifiers are used to Controlling Access to Members of a Class
In Java Access Specifiers are keywords that give rights to access a class in different ways. Four types of Access Specifiers can be found in Java namely?
1. Public
2. Protected
3. Private and
4. Defaults

The following chart shows the access level permitted by each specifier.
Specifier class subclass package world
-----------------------------------------------------
private X
protected X X* X
public X X X X
package X X
(none) X X

For example, if a variable is declared protected, then the class itself can access it, its subclass can access it, and any class in the same package can also access it, but otherwise a class cannot access it.
Thanks