7. What are the main concepts of OOPs in Java? Object-Oriented Programming or OOPs is a programming style that is associated with concepts like: Inheritance: Inheritance is a process where one class acquires the properties of another. Encapsulation: Encapsulation in Java is a mechanism of wrappin...
It improves the runtime performance of computer programs based on bytecode.71. What is the difference between object oriented programming language and object based programming language?Object based programming languages follow all the features of OOPs except Inheritance. JavaScript is an example of ...
10.Why Java Doesn’t support multiple inheritance and Composition vs Inheritance One of the most asked questions is why java doesn’t support multiple inheritances? Why should we prefer composition over inheritance? This article provides a detailed explanation of multiple inheritances. The issues with...
Java Exceptions are hierarchical andinheritanceis used to categorize different types of exceptions.Throwableis the parent class of Java Exceptions Hierarchy and it has two child objects –ErrorandException. Exceptions are further divided into checked exceptions and runtime exceptions.Errorsare exceptional s...
Suggested Read =>> Top OOPs Interview Questions Q #10) What is Inheritance? Answer: Inheritance means one class can extend to another class. So that the codes can be reused from one class to another class. The existing class is known as the Super class whereas the derived class is known...
Q1. What are OOPS concepts in Java interview questions? Object-Oriented Programming (OOPs) is a programming style that relies on objects rather than just functions and procedures. Interview questions on Java OOPS concepts are usually asked on Classes, Methods, Functions, Polymorphism, Inheritance, Co...
Interfaces facilitate multiple inheritance, abstraction and can cut down on the coupling between components. 20) What is the use of encapsulation? It hides the implementation detail and in fact the data, all through invocations restricted by getters, setters and so on. ...
Why does java not support multiple inheritance?What is the root class for all java classes?What is polymorphism?Suppose if we have a variable 'I' in run method, if I can create one or more thread eachthread will occupy a separate copy or same variable will be shared?What are virtual ...
5. Explain the concept of inheritance in Java. Inheritance is a fundamental concept in object-oriented programming, where a class inherits properties and behaviors from another class, known as the superclass or base class. The class that inherits these properties is called the subclass or derived...
It is used to achieve abstraction and multiple inheritance in Java. In other words, you can say that interfaces can have abstract methods and variables. It cannot have a method body. Java Interface also represents the IS-A relationship.