0
What else can I help you with?
What is parent class in java?
Object Class is the parent class of all classes in java.Every class in the Java system is a descendant (direct or indirect) of the Object class.
In java why method defined in super class need not to defined in subclass?
In Java, or in any object oriented language such as C++, a method defined in super (parent) class does not need to be defined in a subclass, because that is the primary purpose of inheritance. Object oriented programming allows you to define and declare a class that implements the behavior for an object. Inheritance allows you to refine, or subclass, that class by "reusing" all of the functionality of the parent class into the sub class, adding additional definition and declaration for the sub class. If the subclass needs to change a parent class method, it can overload that method. This is called abstraction.
Can a parent class access the functions of child class?
no, Parent class can not access the members of child class ,but child class can access members of parent class
What is the purpose of constructor in object oriented programming?
A constructor in a class is one of the first pieces of code to be executed when you instantiate a class. The purpose of constructors is to have code that initialize the class and prepare the variables that may be required by the class...
When a subclass can call a parent's class constructor?
A subclass invokes its base class constructor at the point of instantiation. That is; you cannot instantiate a subclass object without first constructing its base class, which is done automatically.
What is parent class in java?
Object Class is the parent class of all classes in java.Every class in the Java system is a descendant (direct or indirect) of the Object class.
What are the key differences between a parent class and a grandparent class in object-oriented programming?
In object-oriented programming, a parent class is a class that is extended by another class, known as a child class. A grandparent class, on the other hand, is a class that is higher up in the inheritance hierarchy and is not directly extended by the child class. The key difference is that a parent class is directly related to the child class, while a grandparent class is further up the inheritance chain.
What are the applications of super and this keyword?
The super and this keywords are mainly used in case of inheritance. this - refers to the object of the current class instance super - refers to the object of the instance of the parent class of the current class.
In java why method defined in super class need not to defined in subclass?
In Java, or in any object oriented language such as C++, a method defined in super (parent) class does not need to be defined in a subclass, because that is the primary purpose of inheritance. Object oriented programming allows you to define and declare a class that implements the behavior for an object. Inheritance allows you to refine, or subclass, that class by "reusing" all of the functionality of the parent class into the sub class, adding additional definition and declaration for the sub class. If the subclass needs to change a parent class method, it can overload that method. This is called abstraction.
What is a sub class?
In object oriented programming approach subclass is derived from parent class. This term is generally used in concept called "Inheritance" Example [PHP] class A { //class A definition } class B extends A { //class B definition } In above example class A is parent class and class B is subclass/child class .
Short note on inheritance?
Inheritance is used object oriented program. When you create a class, you can create a child class that inherits methods and data from the parent class.
What is sub classes?
In object oriented programming approach subclass is derived from parent class. This term is generally used in concept called "Inheritance" Example [PHP] class A { //class A definition } class B extends A { //class B definition } In above example class A is parent class and class B is subclass/child class .
What is object overridding?
Overriding is an Object-Oriented concept where a subclass overrides a parent class's method(s) so it can provide it's own implementation.
Can a parent class access the functions of child class?
no, Parent class can not access the members of child class ,but child class can access members of parent class
What is the purpose of constructor in object oriented programming?
A constructor in a class is one of the first pieces of code to be executed when you instantiate a class. The purpose of constructors is to have code that initialize the class and prepare the variables that may be required by the class...
Which class includes all the others?
Super class in object oriented programming
When a subclass can call a parent's class constructor?
A subclass invokes its base class constructor at the point of instantiation. That is; you cannot instantiate a subclass object without first constructing its base class, which is done automatically.
