what is the difference between protected and default access specifier in java?
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5 Answers. The protected specifier allows access by all subclasses of the class in question, whatever package they reside in, as well as to other code in the same package. The default specifier allows access by other code in the same package, but not by code that is in subclasses residing in different packages.
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The difference is in how you access them. Arguments are accessible through argv . Standard input is accessible through the stdin file descriptor.
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Getters and setters are used to protect your data, particularly when creating classes. For each instance variable, a getter method returns its value while a setter method sets or updates its value. Given this, getters and setters are also known as accessors and mutators, respectively.
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The keywords 'public' and 'void' designate different things about a method; they are not related to the same concept. ... There are other designations -- private and protected -- that mean other things; private, for instance, designates a method that can only be called from within the class in which it is declared.
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The most relevant difference is that the new operator allocates memory then calls the constructor, and delete calls the destructor then deallocates the memory. new calls the ctor of the object, delete call the dtor. malloc & free just allocate and release raw memory.
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In Python you don't strictly need getters and setters because you can access the attributes of the object directly (e.g. you could just print( kitchen. description ) ). However, in other languages, such as Java, attributes can be protected or private.
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Getter and setter methods (also known as accessors) are dangerous for the same reason that public fields are dangerous: They provide external access to implementation details.
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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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public is an access specifier defining that it can be accessed by any of the classes be it in the same project same/other class, or other project classes. static means that the method is associated with the class, not a specific instance (object) of that class. ... void means that the method has no return value.
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The class members declared as private can be accessed only by the functions inside the class. Protected access modifier is similar to that of private access modifiers. ... The class member declared as Protected are inaccessible outside the class but they can be accessed by any subclass(derived class) of that class.
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There are two types of modifiers in Java: access modifiers and non-access modifiers. The access modifiers in Java specifies the accessibility or scope of a field, method, constructor, or class. We can change the access level of fields, constructors, methods, and class by applying the access modifier on it.
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5 Answers. private - only available to be accessed within the class that defines them. protected - accessible in the class that defines them and in other classes which inherit from that class.
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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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If the class member declared as public then it can be accessed everywhere. If the class members declared as protected then it can be accessed only within the class itself and by inheriting and parent classes. If the class members declared as private then it may only be accessed by the class that defines the member.
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public : accessible from everywhere. protected : accessible by the classes of the same package and the subclasses residing in any package. default (no modifier specified): accessible by the classes of the same package. private : accessible within the same class only.
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Can an object of a subclass access protected field of another object of another subclass? ... There are times, however, when you want to restrict a method to subclasses only or, less commonly, to allow subclass methods to access a superclass field. In that case, you declare a class feature as protected.
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A getter method allows you to get the value of a field while an accessor method sets the value of the field. b. A getter method allows you to get the value of a field while an accessor method is not often used in Java. ... A getter method gets the name of the class while an accessor method gets the value of the field.