In Java, when we talk about pass-by-value and pass-by-reference, we are referring to how arguments are passed to methods. It is important to have a clear understanding of these concepts as they play a crucial role in Java programming. Understanding pass-by-value and pass-by-reference is crucial in Java programming because it helps prevent confusion and ensures…
Read More Java Pass-by-Value vs Pass-by-Referenceclass UserIdComparator implements Comparator<User> { public int compare(User user1, User user2) { if (user1.userId == user2.userId) { return 0; } else if (user1.userId > user2.userId) { return 1; } else { return -1; } } } We will now create a UsernameComparator class that establishes the comparison logic based on the username field. This class…
Read More Comparator interface in JavaOutput: true true true As you can see, the Car class inherits the Vehicle class, which is itself an instance of the Object class. Similarly, the Car class is an instance of both the Vehicle and the Object class. In Java, all classes inherit some useful methods from the Object class, which we will discuss…
Read More Object Class in Javapublic int sum(int a, int b, int c) { // body of the method } class Printer { // fields public void printBook(String bookName) { // … } public void printBook(String bookName, int numberOfPages) { // … } } class Printer { // fields public void printBook(String bookName) { // … } public String printBook(String…
Read More Method Overloading in JavaOutput: Brand is: Ford This is a Ford with a number of seats 5 and with colour blue
Read More Java Inheritance: A Beginner’s GuideMethods are an essential part of Java programming. They are used to group a set of statements together to perform a specific task, which can be called whenever needed. In this tutorial, we will discuss the different types of methods in Java, including predefined methods and user-defined methods, and their advantages. We will also cover…
Read More Master Methods in JavaThe Java Virtual Machine (JVM) is an integral part of the Java platform and is responsible for executing Java code. It provides a platform-independent environment for running Java applications, allowing developers to write code once and run it anywhere. Understanding how the JVM works is essential for Java developers to optimize performance and ensure the…
Read More Java Virtual Machine (JVM): The Complete GuideVariables are an essential part of programming in Java. They are used to store data that can be later retrieved and manipulated. Understanding the different types of variables and their scope is crucial to writing efficient and maintainable code. In this tutorial, we will discuss the basics of variables in Java, including what they are,…
Read More Master Variables in JavaIn addition to the Java Runtime Environment (JRE), the JDK includes the following components: Compiler The Java compiler is used to convert Java source code into bytecode that can be executed on the Java Virtual Machine (JVM). A compiler is a command-line tool that takes a .java file as input and produces a .class file…
Read More JRE, JDK, and JVM: Understanding Differences and UsesPrimitive type Wrapper class boolean Boolean byte Byte char Character float Float int Integer long Long short Short double Double class Test { int id = 5; Integer id1 = id; // autoboxing } class Test { public static void main(String[] args) { int a = 10; int b = 20; List<Integer> list = new…
Read More Autoboxing and Unboxing in JavaProgramming languages like Java rely on the use of data types to manage and manipulate data in a program. Data types are a fundamental concept in programming and understanding them is crucial to becoming a proficient Java developer. Java has two main categories of data types: primitive data types and reference data types. Primitive data…
Read More Java Data Types: The Complete Beginner’s GuideWelcome to this tutorial on how to compile and run your first Java program. Java is a versatile and widely used programming language, known for its portability and platform independence. Whether you are new to programming or have experience with other languages, this tutorial will provide you with a step-by-step guide to writing and executing…
Read More Your First Java Program: A Guide to Compiling and Running It SuccessfullyIf you’re new to Java programming or just starting out, it can be a bit overwhelming to know where to begin. That’s why I’ve put together this guide to help you get set up with everything you need to start developing Java applications. In this tutorial, I’ll walk you through the steps of downloading and…
Read More Setting up Java Development Environment: A Complete Guideclass Test { public static void main(String[] args) { short a = 10; int b = a; // automatically converts the short type into int type int c = 10; long d = c; // automatically converts the integer type into long type float f = d; // automatically converts the long type into float…
Read More Type Casting in Java