0
a
Wiki User
∙ 13y ago
Add your answer:
Earn +20 pts
What are methods in programming?
A method is simply a name we often use when referring to a virtual function in object oriented programming. We can define virtual functions for any class method which we expect to be overridden by a derivative of the class. Even if the exact runtime type of an object is not known but we hold a reference or pointer to one of its base classes, and unless we specify otherwise, implicitly invoking any method of that base class will invoke the most-derived override of that method, thus objects behave according to type even when that type is not known at compile time. This is known as runtime polymorphism.
What is current instance in java?
Instance refers to one item of a particular type. for ex: you are one instance of a human, similarly I am one instance of human. An instance in object oriented terms refers to one item of a particular object type.
What is the main purpose in using a destructor?
Destructors are called automatically whenever an object falls from scope. Even if you don't actually declare a destructor, one is implied. The primary purpose of a destructor is to give the programmer one final chance to clean up an object's memory allocations before the object is destroyed forever. If an object has allocated memory associated with it (via member pointer variables), then that memory must be released before the object is destroyed, otherwise a memory leak is inevitable. Destructors are also important in class inheritance. When a derived object falls from scope, its immediate base class destructors are called, followed by their base class destructors. This is effectively the reverse of an object's construction, which always begins with the least-derived base classes, working up to the most-derived class, which is the object itself. Just as a derived class cannot be instantiated until all its base classes are constructed, a base class object cannot be destroyed until all its derived class objects are destroyed. All the destructors in a class hierarchy must be declared virtual to ensure the correct most-derived destructor is called whenever a base class reference falls from scope.
What is the definition of a base-class constructor?
A base class constructor is simply a constructor that is declared within a base class. There is nothing particularly special about them since all constructors are only of relevence and applicable to the classes in which they are declared.
What is the difference between inheritance relationship and client-server relationship in programming?
These two concepts are not even remotely related, so listing the differences would be pointless. Far easier to simply explain what they are. The client-server model is typically used in networking where one computer acts as the server and all computers that connect to it are known as the clients. The server does all the actual work, serving information to the clients and collecting information from the clients. The software is therefore divided into two major components known as the server and the client. Inheritance is typically found in object-oriented programming, where one class of object derives from another class of object known as a base class.
What are methods in programming?
A method is simply a name we often use when referring to a virtual function in object oriented programming. We can define virtual functions for any class method which we expect to be overridden by a derivative of the class. Even if the exact runtime type of an object is not known but we hold a reference or pointer to one of its base classes, and unless we specify otherwise, implicitly invoking any method of that base class will invoke the most-derived override of that method, thus objects behave according to type even when that type is not known at compile time. This is known as runtime polymorphism.
What is current instance in java?
Instance refers to one item of a particular type. for ex: you are one instance of a human, similarly I am one instance of human. An instance in object oriented terms refers to one item of a particular object type.
What is the main purpose in using a destructor?
Destructors are called automatically whenever an object falls from scope. Even if you don't actually declare a destructor, one is implied. The primary purpose of a destructor is to give the programmer one final chance to clean up an object's memory allocations before the object is destroyed forever. If an object has allocated memory associated with it (via member pointer variables), then that memory must be released before the object is destroyed, otherwise a memory leak is inevitable. Destructors are also important in class inheritance. When a derived object falls from scope, its immediate base class destructors are called, followed by their base class destructors. This is effectively the reverse of an object's construction, which always begins with the least-derived base classes, working up to the most-derived class, which is the object itself. Just as a derived class cannot be instantiated until all its base classes are constructed, a base class object cannot be destroyed until all its derived class objects are destroyed. All the destructors in a class hierarchy must be declared virtual to ensure the correct most-derived destructor is called whenever a base class reference falls from scope.
What is the definition of a base-class constructor?
A base class constructor is simply a constructor that is declared within a base class. There is nothing particularly special about them since all constructors are only of relevence and applicable to the classes in which they are declared.
What is the difference between inheritance relationship and client-server relationship in programming?
These two concepts are not even remotely related, so listing the differences would be pointless. Far easier to simply explain what they are. The client-server model is typically used in networking where one computer acts as the server and all computers that connect to it are known as the clients. The server does all the actual work, serving information to the clients and collecting information from the clients. The software is therefore divided into two major components known as the server and the client. Inheritance is typically found in object-oriented programming, where one class of object derives from another class of object known as a base class.
What is the inheritance concept of oops?
Inheritance, together with encapsulation and polymorphism, is one of the three primary characteristics (concept) of object-oriented programmingInheritance enables you to create new classes that reuse, extend, and modify the behavior that is defined in other classesThe Class whose methods and variables are defined is called super class or base classThe Class that inherits methods and variables are defined is called sub class or derived classSometimes base class known as generalized class and derived class known as specialized classKeyword to declare inheritance is ":" (colon) in visual c#LEarn Design Pattern,C#,ASP.NET,LINQ,Sharepoint,WCF,WPF,WWF
What has one triangular base and three triangular lateral faces?
That object would be called a triangular pyramid, also known as a tetrahedron.
What is derived class in brief?
A derived class is any class that inherits from one or more other classes, known as base classes. The derived class inherits the sum total of all public and protected members of all its base classes, including their base classes. The derived class is a more specialised form of its base classes. Any members of the base classes that are declared virtual can be overridden, such that calling the base class method directly actually invokes the derived class method, thus enabling polymorphic behaviour.
Inheritance?
The process by which physical and biological characteristics are transmitted from the parent (or parents) to the offspring.
What is the Difference between multilevel and multiple inheritance?
Multiple Inheritance : we can inherit more than one class in the same class. Multi-Level Inheritance: where one class can inherit only one base class and the derived class can become base class of some other class.
What is difference between classes and objects?
Posted by : Govind Singh Lodhithese are the following differences between java class and object.1. Class is a way of bind data member and method in single unit where as a object is a value form of a class or a instance of a class that means allocating sufficient amount of memory space.2. When we define a class ,there is no memory space allocated for data member of a class where as when we create a object of a class memory space is allocated for data members of a class.3.Class will have exist logically where as object will have exist physically.4.One class can have only one name where as corresponding one class we can create multiple object.5.Class load in main memory by using class loader subsystem where as after load class we can create multiple objects of a class.
What is hierarchal inheritance?
Hierarchical inheritance is a type of inheritance in object-oriented programming where classes are organized in a hierarchical structure. It means that a derived class can inherit attributes and methods from a base or parent class, and it can further be inherited by other classes. This allows for code reuse and promotes modularity in the program.
