what is the difference between protected and private in java?
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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.
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protected: The type or member can be accessed only by code in the same class , or in a class that is derived from that class . internal: The type or member can be accessed by any code in the same assembly, but not from another assembly.
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No, Constructors can be public , private , protected or default (no access modifier at all). Making something private doesn't mean nobody can access it. It just means that nobody outside the class can access it. So private constructor is useful too.
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fileprivate allows use only within the defining source file. private allows use only from the enclosing declaration and new in Swift 4, to any extensions of that declaration in the same source file.
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In case the data is not modified when shared between threads, the story is simple. The data has only to be initialized in the thread safe way. It is not necessary to use an expensive lock for each access. There are three ways in C++ to initialize variables in a thread safe way.
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Private Bytes refer to the amount of memory that the process executable has asked for - not necessarily the amount it is actually using. They are "private" because they (usually) exclude memory-mapped files (i.e. shared DLLs). ... Working Set refers to the total physical memory (RAM) used by the process.
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Explanations. A private member ( i ) is only accessible within the same class as it is declared. A member with no access modifier ( j ) is only accessible within classes in the same package. A protected member ( k ) is accessible within all classes in the same package and within subclasses in other packages.
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A public member is accessible from anywhere outside the class but within a program. ... A protected member variable or function is very similar to a private member but it provided one additional benefit that they can be accessed in child classes which are called derived classes.
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A private member is only accessible within the same class as it is declared. A member with no access modifier is only accessible within classes in the same package. A protected member is accessible within all classes in the same package and within subclasses in other packages.
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Protected Inheritance − When deriving from a protected base class, public and protected members of the base class become protected members of the derived class. Private Inheritance − When deriving from a private base class, public and protected members of the base class become private members of the derived class.
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protected: The type or member can be accessed only by code in the same class , or in a class that is derived from that class . ... protected internal: The type or member can be accessed by any code in the assembly in which it's declared, or from within a derived class in another assembly.
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[' set the private variables of the second class initialise the values by calling a custom function and passing the values.', ' setProperties do it by directlyInitialising it using the setter method.']
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The main difference between private and final keyword in Java is that private is primarily an access modifier, which controls the visibility of variable, method, and classes in Java application, while final is just a modifier that enforces additional constraints on the field, method, and class in Java.
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default access specifier is for the access only in the package itself. For the classes and class members inside the package. public access specifier gives you permission to access it from anywhere inside as well as outside the package.
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The answer is very simple: the public JRE is the one users will use if they want to run anything Java. The private JRE is a different installation that one can use, if the explicitly execute that Java binary (e.g. on Windows: "C:\Programs\Java\MyJava\bin\java.exe").
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Private members are accessible within the same class in which they are declared. Protected members are accessible within the same class and within the derived/sub/child class. Private members can also be accessed through the friend function. Protected members cannot be accessed through the friend function.
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Member variables or methods in a class or structures are called Fields. Properties are an extension of fields and are accessed using the same syntax. They use accessors through which the values of the private fields can be read, written or manipulated. Properties do not name the storage locations.