What is public access specifier?

An Access Modifier is a key Word in Java that determines what level of access or visibility a particular Java variable/method or class has. There are 4 basic access modifiers in Java. They are:

1. Public

2. Protected

Java

3. Default and

4. Private

Private is the most restrictive access modifier whereas public is the least restrictive. Default is the access protection you get when you do not specifically mention an access modifier to be used for a Java object.

Java programming does not run by just a single piece of class that has the whole functionality. You have hundreds of classes that interact with one another, passing data between them and returning output to the user of the system. So it is very important for members of one class to access members of another. Here members may refer to variables, methods and even classes. So, this is where the access modifiers come into picture. The modifier associated with every member of the class determines what level of visibility that member has.