What are the various access specifiers in Java?

Question

Aryan Kumar · Answer

In Java, there are four access specifiers that are used to control the visibility of fields, methods, and classes. These access specifiers determine which other classes can access the member variables and methods of a class. The access specifiers in Java are:

Public: Public access specifier allows a member variable or method to be accessed from any class or package.
Private: Private access specifier restricts a member variable or method to be accessed only from within the same class. Other classes cannot access private members of a class.
Protected: Protected access specifier allows a member variable or method to be accessed from within the same class, as well as any subclasses of the class, and any classes in the same package as the class.
Default (no specifier): If no access specifier is specified, then the member variable or method is given default access. This means that the member variable or method can be accessed from within the same package, but not from any classes outside of the package.

Here's an example of how access specifiers can be used in Java:

public class MyClass {
  public int publicVariable;
  private int privateVariable;
  protected int protectedVariable;
  int defaultVariable;
  public void publicMethod() {
     // Code here
  }
  private void privateMethod() {
     // Code here
  }
  protected void protectedMethod() {
     // Code here
  }
  void defaultMethod() {
     // Code here
  }
}

In this example, publicVariable and publicMethod() can be accessed from any class or package, while privateVariable and privateMethod() can only be accessed from within the same class. protectedVariable and protectedMethod() can be accessed from within the same class, any subclasses of the class, and any classes in the same package as the class. defaultVariable and defaultMethod() can be accessed from within the same package, but not from any classes outside of the package.

Krishnapriya Rajeev · Answer

In Java, access specifiers are used to determine the level of access that other classes or objects have to a particular class, method, or variable. It supports encapsulation and ensures that classes and objects are used only as intended. There are four types of access specifiers in Java: Public: A public class, method, or variable can be accessed from anywhere, by any other class or object.Private: A private class, method, or variable can only be accessed within the same class where it is defined. Other classes or objects cannot access private members.Protected: A protected class, method, or variable can be accessed within the same package or by subclasses of the class in other packages.Default (also known as package-private): A class, method, or variable that has no access specifier (i.e., not explicitly marked as public, private, or protected) can be accessed within the same package, but not by classes in other packages.

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What are the various access specifiers in Java?

What are the various access specifiers in Java?

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