Access-specifier in JAVA:-

Access Specifier in java regulate access to class,field & method.

There are 4 types of access specifier present in java such as:-

The only job of access specifier is to scope the boundary of variable method constructor class.

1.Public:-

a.Public has less restriction.

b.In other word is has no restriction.

c.It can access anywhere in within same class, within same package and outside the package .

2.Protected:-

a.It has no restriction

b.We can access it within same class,within same package and outside the package.

c.But outside package required inheritance.

3.Default:-

a.Access in same class

b.Access in same package and we cannot access outside package.

4.Private:-

a.It is the most restrictive access-specifier in java.

b.We can access it only within same class.

c.We cannot access it within package and outside package.

Private member cannot access outside the class.
A java file contain number of classes but only one class will be declared as public due to syntax restriction.
By the syntax of java if a class declared as public the filename class name should be same.
Protected and private keyword not allow in java class.