How many access modifiers

You will learn more about inheritance in a later chapter internal The code is only accessible within its own assembly, but not from another assembly. You will learn more about this in a later chapter. WriteLine myObj. Why Access Modifiers? Report Error. Your message has been sent to W3Schools. W3Schools is optimized for learning and training. There are four types of access modifiers available in java: Default — No keyword required Private Protected Public Attention reader!

Get hold of all the important Java Foundation and Collections concepts with the Fundamentals of Java and Java Collections Course at a student-friendly price and become industry ready. Default : When no access modifier is specified for a class, method, or data member — It is said to be having the default access modifier by default.

The data members, class or methods which are not declared using any access modifiers i. In this example, we will create two packages and the classes in the packages will be having the default access modifiers and we will try to access a class from one package from a class of the second package. Hence these modifiers in terms of application to classes, apply only to nested classes and not on top-level classes In this example, we will create two classes A and B within the same package p1.

We will declare a method in class A as private and try to access this method from class B and see the result. The methods or data members declared as protected are accessible within the same package or subclasses in different packages.

In this example, we will create two packages p1 and p2. Class A in p1 is made public, to access it in p2. The method display in class A is protected and class B is inherited from class A and this protected method is then accessed by creating an object of class B. The public access modifier has the widest scope among all other access modifiers. Here, the format variable of the Logger class is private, so there's no way for other classes to retrieve or set its value directly.

So, to make this variable available to the outside world, we defined two public methods: getFormat , which returns the value of format, and setFormat String , which sets its value. A class, method, constructor, interface, etc. Therefore, fields, methods, blocks declared inside a public class can be accessed from any class belonging to the Java Universe.

However, if the public class we are trying to access is in a different package, then the public class still needs to be imported. Because of class inheritance, all public methods and variables of a class are inherited by its subclasses.

The main method of an application has to be public. The private modifier specifies that the member can only be accessed in its own class. The protected modifier specifies that the member can only be accessed within its own package as with package-private and, in addition, by a subclass of its class in another package. The first data column indicates whether the class itself has access to the member defined by the access level. As you can see, a class always has access to its own members.

The second column indicates whether classes in the same package as the class regardless of their parentage have access to the member. The third column indicates whether subclasses of the class declared outside this package have access to the member. The fourth column indicates whether all classes have access to the member. Access levels affect you in two ways.