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Encapsulation is a fundamental concept in object-oriented programming (OOP) that involves bundling data and behaviour together into a single unit, called a class. The key idea behind encapsulation is to protect the data within a class from being accessed or modified directly by code outside the class. Instead, the class provides methods or functions to…

Read More Encapsulation in Java Made Easy: Mastering OOP Principles

package vehicle; public class Car { // fields and methods } package vehicle; // OK public class Car { package vehicle; // DOES NOT COMPILE // fields and methods } package vehicle; // DOES NOT COMPILE package vehicle; class Car { public void printRandomNumber() { Random r = new Random(); // DOES NOT COMPILE System.out.println(r.nextInt(10));…

Read More Java Packages

In this tutorial, we will explore the differences between interfaces and abstract classes and when to use each of them. We’ll start with a brief overview of what these two approaches are, and then dive into their characteristics, syntax, and usage in Java. By the end of this tutorial, you will have a solid understanding…

Read More Interfaces VS Abstract Classes in Java: Exploring the Powerful Distinctions

In Java, an interface is a collection of abstract methods that define a contract or a set of behaviors that a class can implement. Interfaces provide a way to achieve abstraction and polymorphism, enabling objects of different classes to be treated interchangeably based on their common behavior. In this tutorial, we will explore the various…

Read More Java Interfaces: Everything You Need to Know

Abstraction is the process of hiding implementation details and presenting only the essential features to the user. This allows us to focus on what an object is doing rather than how it is doing it. In Java, abstract classes and methods are key tools for implementing abstraction. Abstract classes serve as templates for creating subclasses,…

Read More Abstract Classes and Methods in Java: Explained!

Java is an object-oriented programming language that allows developers to create reusable and modular code through the use of classes, objects, and interfaces. One of the key features of Java is the concept of binding, which refers to the association of a method call to the corresponding method body. There are two types of binding…

Read More Static and Dynamic Binding in Java: A Complete Guide

Java is a popular programming language that is used for a wide variety of applications, ranging from web development to mobile app development to machine learning. One of the features of Java that is particularly important for programmers to understand is the “final” keyword. The “final” keyword in Java is used to indicate that a…

Read More Java Final Keyword: A Comprehensive Guide

In Java, a static initializer block is a block of code that is executed when a class is loaded into memory. It is typically used to perform some initialization tasks that need to be done before the class can be used, such as initializing static variables, registering JDBC drivers, or building complex data structures. In…

Read More Mastering Java’s Powerful Static Initializer Block

public static void main(String[] args) { { System.out.println(“Summer”); } } { System.out.println(“Winter”); } 1 public class Car { 2 private String model = “Ford”; 3 4 { 5 System.out.println(“Instance Initializer block…”); 6 } 7 8 public Car () { 9 model = “Opel”; 10 System.out.println(“Constructor…”); 11 } 12 13 public static void main(String[] args) {…

Read More Java Instance Initializer Block

class Vehicle { void startEngine() { System.out.println(“Starting the engine…”); } void stopEngine() { System.out.println(“Stopping the engine…”); } } class Car extends Vehicle { void move() { System.out.println(“The car is moving…”); } void invoke() { super.startEngine(); move(); super.stopEngine(); } } class TestSuper2 { public static void main(String args[]){ Car car = new Car(); car.invoke(); } }…

Read More Keyword super in Java

In Java programming, the “this” keyword is used to refer to the current object. It is a reference to the object on which the method or constructor was invoked, and it is typically used to distinguish between class fields and local variables that have the same name. Understanding how to use “this” keyword is important…

Read More Java’s ‘this’ Keyword Explained: Why it Matters and How to Use It