1/24/2024 0 Comments Java oops concepts![]() The term “ characteristics” refers to the “what” about the Object, and the term “ behavior” refers to the “how” about the Object.įor example, if we consider a car, then based on the OOPs model: So the Objects are considered the instance of a class, and are therefore sometimes called “ instances”. In simple language, a class can be considered as the blueprint or template, based on which objects can be created. Objects can be considered as real-world instances of entities like class, that contain some characteristics and behaviors specified in the class template. ![]() OOPs, or Object-Oriented Programming is a programming model or paradigm which revolves around the concept of “ OBJECTS”. What will be the output of the below code? Can we run a Java application without implementing the OOPs concept? What is meant by Garbage Collection in OOPs world? ![]() ![]() What are access specifiers and what is their significance? How is an abstract class different from an interface? What is the difference between overloading and overriding? What are the various types of inheritance? Are there any limitations of Inheritance? Are class and structure the same? If not, what's the difference between a class and a structure? What are the various types of constructors in C++? Is it always necessary to create objects from class? What is Compile time Polymorphism and how is it different from Runtime Polymorphism? What are some other programming paradigms other than OOPs? What are some major Object Oriented Programming languages? For example, if we want to drive a car, we does not need to know about the internal functionality like how wheel system works? how brake system works? how music system works? etc. In the abstraction concept, we do not show the actual implemention to the end user, instead we provide only esential things. AbstractionĪbstraction is hiding the internal details and showing only esential functionality. Method overriding - multiple methods with same name and same parameters. Method overloading - multiple methods with same name but different parameters. The java uses method overloading and method overriding to implement polymorphism. That means creating multiple methods with different behaviors. Polymorphism is the process of defining same method with different implementation. In java programming language the keyword extends is used to implement inheritance. In the inheritance, the properties and behaviors of base class extended to its derived class, but the base class never receive properties or behaviors from its derived class. The child class is also known as derived class or sub class. The parent class is also known as base class or supre class. In the inheritance concept, the class which provides properties is called as parent class and the class which recieves the properties is called as child class. Here, the new class acquires the properties and behaviors from the existing class. In inheritance, we derive a new class from the existing class. Inheritance is the process of acquiring properties and behaviors from one object to another object or one class to another class. The java programming language uses the class concept to implement encapsulation. In programming, data is defined as variables and code is defined as methods. In OOP, every object is associated with its data and code. EncapsulationĮncapsulation is the process of combining data and code into a single unit (object / class). The popular object-oriented programming languages are Smalltalk, C++, Java, PHP, C#, Python, etc. The object-oriented programming paradigm has the following core concepts. In other words, OOP is a way of writing programs based on the object concept. OOP is a programming paradigm in which every program is follows the concept of object. OOP stands for Object-Oriented Programming.
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