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What are the different access modifiers in Java, and what do they mean?

 



In Java, there are four access modifiers that determine the level of access that other classes have to a particular class, field, or method. The access modifiers are:

  1. public: This access modifier allows unrestricted access to the class, field, or method from any other class in any package.

  2. private: This access modifier restricts access to the class, field, or method to only the class in which it is declared. It cannot be accessed by any other class, even those in the same package.

  3. protected: This access modifier allows access to the class, field, or method by any class in the same package or any subclass of the class, even if the subclass is in a different package.

  4. default (no modifier): This access modifier allows access to the class, field, or method by any class in the same package, but not by classes in other packages.

In summary, access modifiers determine the level of access that other classes have to a particular class, field, or method. The Public provides the widest access, followed by protected, default, and private, which provides the most restrictive access.


In Java, there are four access modifiers that can be used to control access to classes, methods, and variables:

  1. Public: Public access modifier allows access from anywhere in the program, including outside the class and package. Any class can access public members of a class.

  2. Private: Private access modifier limits access to only the same class where the member is declared. No other class can access private members of a class.

  3. Protected: Protected access modifier allows access within the same package or any subclass, regardless of the package. Protected members are not accessible to unrelated classes outside the package hierarchy.

  4. Default (no modifier): If no access modifier is used, the member is considered to have default access. Default members are only accessible within the same package.

Access modifiers are used to maintain encapsulation and ensure that classes are used only as intended. By using the appropriate access modifier, you can ensure that your classes and members are accessed only in the ways you want, and you can prevent unauthorized access to your classes or data.

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