vaishnavi
Casting in Java Casting in Java is a way to convert a value from one data type to another. Think of it as transforming one type of object or value into another type. For example, converting a double number into an int number. Casting in Java are classified into two types: Primitive type casting Non-primitive … Read more
Abstraction in Java Abstraction is one of the core concepts in Object-Oriented Programming (OOP), and it plays a crucial role in simplifying complex systems by hiding the implementation details and exposing only the essential features. In Java, abstraction is achieved through abstract classes and interfaces. Definition of Abstraction: Abstraction refers to the process of hiding … Read more
Method Overloading and Method Overriding Method Overloading Method overloading occurs when you have multiple methods with the same name but different parameter lists. This can be done in the same class. Example: class Calculator { // Method to add two integers int add(int a, int b) { return a + b; } // Overloaded method … Read more
Polymorphism in Java Polymorphism in Java is one of the fundamental concepts in Object-Oriented Programming (OOP), which allows objects to be treated as instances of their parent class rather than their actual class. The word polymorphism comes from Greek, meaning “many forms.” In Java, polymorphism allows a single action to behave differently based on the … Read more
Encapsulation in Java Encapsulation is one of the essential principles of Object-Oriented Programming (OOP) in Java. It is the method of bundling the data (variables) and the methods that work on the data into a single unit or class. It moreover refers to limiting access to certain details of an object’s inner state, making it … Read more
Constructors in Java A constructor in Java, could be a extraordinary type of method that’s utilized to initialize objects. A constructor in Java called naturally when an object of a class is made. Constructors help in initializing the object’s state (i.e., assigning values to the areas of the object) when it is made. Key Focuses … Read more
Access Specifiers in Java Access specifiers in Java(also called access modifiers) are keywords utilized to indicate the visibility (availability) of classes, methods, and variables. They control the level of access to members of a class from other classes or packages. There are four main types of access specifiers in Java: public private protected Default (Package-Private) … Read more
Inheritance in OOP In Java, inheritance in OOP permits one class (the subclass) to acquire the properties and behaviors (fields and methods) from another class (the superclass) with the help of extends keyword. This component supports the concept of “reusability” and “various leveled classification.” There are a few types of inheritance in Java, each advertising … Read more
Java Object-Oriented Programming (OOP) Java Object-Oriented Programming (OOP) is a programming paradigm that’s based on the concept of “objects”. These objects can speak to real-world entities and are characterized by their properties (attributes) and behaviors (methods). Java, as an object-oriented programming(OOP) language, takes after the OOP paradigm and permits developers to organize software in terms … Read more
Java Coding Problems Here are some basic Java coding problems that are commonly asked in interviews. Java coding problems cover a range of fundamental concepts like loops, conditionals, arrays, and string manipulation. 1. Check if a Number is Even or Odd import java.util.Scanner; public class EvenOdd { public static void main(String[] args) { Scanner scanner … Read more