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Can instance methods replace class methods in programming?
No. never. An instance method cannot replace a class method because: Instance Methods - are normal methods that are linked to a class object instance Class Methods - are static methods that are not linked to any class object. These methods are not interchangeable and will create too many issues if we try to use one in place of the other.
Is the default access specifier same as protected?
A private member of a class can only be accessed by methods of that class. A protected member of a class can only be accessed by methods of that class and by methods of a derived class of that class.
What is the difference between a class method and an instance method?
Instance methods can be called by the object of a Class whereas static method are called by the Class. When objects of a Class are created, they have their own copy of instance methods and variables, stored in different memory locations. Static Methods and variables are shared among all the objects of the Class, stored in one fixed location in memory.Static methods cannotaccess instance variables or instance methods directly-they must use an object reference. Also, class methods cannot use the this keyword as there is no instance for this to refer to.
Math class is an example of which class?
It is a static class; meaning that all the methods can be accessed directly from the class name, without instantiating an object.It is a static class; meaning that all the methods can be accessed directly from the class name, without instantiating an object.It is a static class; meaning that all the methods can be accessed directly from the class name, without instantiating an object.It is a static class; meaning that all the methods can be accessed directly from the class name, without instantiating an object.
What is the appropriate trademark class for goods related to medical and veterinary preparations in class 100?
The appropriate trademark class for goods related to medical and veterinary preparations in class 100 is Class 5.
What is factory methods?
Factory methods are merely a convention whereby static methods in a class return an instance of that class. The InetAddress class has no visible constructors. In InetAddress the 3 factory methods getLocalHost, getByName, getAllByName can be used to create instances of InetAddress.
What happens if a class doesn't implement all the methods defined in the interface?
It depends on how the class is declared.If the class is a normal class - Then the compiler will complain. All the methods in an interface must be implemented by the class to successfully compile the classIf the class is declared as abstract - Then the compiler will ignore the fact that a few methods are not implemented
What is the difference abstract class and interface?
They are very different. An abstract class is a class that represents an abstract concept (Google define "abstract" if you're unsure) such as 'Thoughts' or 'BankAccount'. When a class is defined as abstract it cannot be used (directly) to create an object. Abstract classes are used as super-classes so that all of their subclasses inherit all methods. Interfaces can be thought of as contracts with all of their implementing classes. They simply require all implementing classes to have methods with the same signature as that defined in the interface, but such methods can behave as appropriate. Hope that helps :)
What makes up a Java class?
Fields and methods. Fields are variables defined at the class level, i.e., they are available for all methods. Methods are the equivalent of functions / procedures, but they are defined for a specific class.
Different access specifies in C plus plus?
Public members and methods of a class are universally accessible. Protected members and methods of a class are accessible to methods of instances of that class and its derived classes. Private members and methods of a class are accessible only to methods of instances of that class.Class A has three members: public_member, protected_member, and private_member, which have access corresponding to their names. Class A has access to all three. Class B, derived from class A, has access to public_member and protected_member, but not private_member. Unrelated class C has access only to public_member.
What allows a new class to automatically pick up all the data and methods of an existing class?
Inheritance allows a new class to automatically pick up all the protected and public data and methods of an existing class. To do so, the new class must be derived from the existing class. Private data and methods remain private to the existing class, the base class.
What is a rainbow lorikeet appropriate?
Class
