Inheritanceis the object-oriented programming concept where an object is based on another object. Inheritance is the mechanism of code reuse. The object that is getting inherited is called the superclass and the object that inherits the superclass is called a subclass. We useextendskeyword in ja...
One of the most fundamental concept of OOPs isAbstraction. Abstraction is a process where you show only “relevant” data and “hide” unnecessary details of an object from the user. For example, when you login to your Amazon account online, you enter your user_id and password and press lo...
Ans: Inheritance is one of main pillars of OOPs concept. Some objects share certain properties and behaviors. By using inheritance, a child class acquires all properties and behaviors of parent class. There are the following reasons to use inheritance in java. We can reuse...
In that case, JVM will throw an error. To solve this problem, concept of Interface was introduced. In Java, multiple interface is allowed but multiple inheritance is not allowed.Hybrid Inheritance Hybrid Inheritance is the combination of two or more than two types of inheritance. Like multiple ...
this is that we can create new classes built on existing classes, i.e., when you inherit from an existing class, we can reuse methods and fields of the parent class. Inheritance represents the parent-child relationship. To know more about this concept check thefree inheritance in java ...
In this post, we learn OOPs Concept in Java. OOPS Stands for Object Oriented Programming System. In this tutorial, I will introduce you to Class, Object, Constructor, Abstraction, Encapsulation, Inheritance, Polymorphism, Interface etc.,
Multithreading is an important concept that helps to solve present-day coding and design problems. Hence, you can expectJava Multithreading interview questionsin systems design interviews at FAANG+ companies. Get Ready For Your Upcoming Technical Interview ...
Java MCQ – OOPs This set of Java Multiple Choice Questions & Answers (MCQs) focuses on “OOPs”. 1. Which of the following is not OOPS concept in Java? a) Inheritance b) Encapsulation c) Polymorphism d) Compilation View Answer 2. Which of the following is a type of polymorphism in ...
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The concept of defining multiple methods with same name and with same signature in super class and sub class known as Dynamic polymorphism. Inheritance: Getting the properties from one class object to another class object is known asInheritance. ...