Rkavindu

       Before start this discussion , you want to know about method override . For that you can read my previous blog. https://rkavidu222.blogspot.com/2024/01/basics-of-method-overriding-in-java.html      Super Keyword:-      It is used to call parent class methods, and to access the  parent class  constructor. The most common use of the super keyword is to eliminate the confusion between  parent class es and child classes that have methods with the same name(overriding). 1. Access Overridden Methods of the superclass      If methods with the same name are defined in both superclass and subclass, the method in the subclass overrides the method in the superclass. This is called method overriding. 2. Access Attributes of the Superclass      The superclass and subclass can have attributes with the same name. We use the super keyword to access the attribute of the superclass. 3. Use of super() t...

Method Overriding in JAVA The process of changing the body of the methods inherited from the parent class to the child class is called method override . For a method to be overridden, the class must be inherited.       As we said earlier, in order to override, both the parent and child classes must have methods with the same name. When a class is inherited, the child class automatically inherits the contents of the parent class. After that, two methods will be created in the child class with the same name(the inherited method and the overridden method). W hen the method is overridden, u sually only the method of the child class is executed. The method of the inherited class will never be run. If we need to run parent class method in child class, we have another concept for it. Lets see about it in next blog.

 Java Inheritance In OOP concept, there are 4 main principles. They are, Inheritance Encapsulation Abstraction Polymorphism In this blog we discuss about Inheritance .      We can simply introduce the process of relating one class to another class as inheritance . Inheritance means creating new classes based on existing ones. In inheritance one class can inherit the properties and behaviors of another class.      In Java, a superclass (base/parent class) is a class that is extended or inherited by another class. The class that inherits from the superclass is called a subclass (derived/child class).      The members (attributes and methods) of the superclass should have appropriate access modifiers (e.g., public, protected) to control their visibility in the subclass.      Things of the parent class are inherited by the child class, but the private things of the parent class are not inherited by the child class. Howeve...

Method Overload In JAVA      Before learn about method overload, let us know about what is  method in java. Method:-     A method in OOP is a block of code that, when called, performs specific actions mentioned in it.       visit  https://rkavidu222.blogspot.com/2024/01/a-deep-dive-into-classes-methods.html        You can get small knowledge about methods and other things visiting above link. Method Overloading:-      In Java, the term "method overloading" describes the capability of defining numerous methods with the same name but distinct parameter lists inside the same class. This enables programmers to design methods that have comparable functionality but distinct input acceptance mechanisms. The quantity, kind, or sequence of parameters determines whether a method is overloaded. Key points in method overloading:- Method name is same. Parameters are different. Primary reasons for using met...

Constructor :-          In Java, a class instance is created using the constructor. With the exception of having no return type and having the same name as the class, constructors are nearly identical to methods. In java programming, constructor run first.                           1. Parameterless Constructor                        Parameter-less constructors are those that are defined without any arguments or parameters. The operation of a parameter-less constructor is similar to that of a default constructor; it might be empty or contain statements.        1. Parameterized Constructor                     In Java programming, parameterized constructors are constructors that have one or more arguments and are written by progr...

Demystifying Java Basics     Class :-                Class is a sketch used to implement an object at the programming level.  And also we an define class as "A template that can keep the things what we need" .It is a blue print of a object.                We take only the class, the constructor and main method as the limits of the class.  Although the other methods are inside the class, we do not take them as the boundary of the class.    Variables :-        Variables are containers for storing data values. Mainly there are two types in variables.                      Static Variables-               When a variable is declared static in Java programming, it means that the variable can access any place in the class. We cant convert local vari...