Access and Non Access Modifiers in Java

Java provides a rich set of modifiers. They are used to control access mechanism and also provide information about class functionalities to JVM. They are divided into two categories : –

  • Access Modifiers : Java’s access modifiers are public, private, and protected. Java also defines a default access level (called package-private).

    How they work?

    public: When a member of a class is modified by public, then that member can be accessed by any other code.
    private: When a member of a class is specified as private, then that member can only be accessed by other members of its class.
    Now you can understand why main( ) has always been preceded by the public modifier. It is called by code that is outside the program—that is, by the Java run-time system. When no access modifier is used, then by default the member of a class is public within its own package, but cannot be accessed outside of its package. protected applies only when inheritance is involved.

    Detailed article : Access Modifiers in Java

  • Non-access modifiers : In java, we have 7 non-access modifiers or sometimes also called specifiers. They are used with classes, methods, variables, constructors etc to provide information about their behavior to JVM.They are

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