Java

Java Records, introduced in Java 14 as a preview feature and finalized in Java 16, provide a concise way to define immutable data carrier classes. They reduce boilerplate code needed for simple data structures by automatically providing implementations for methods like equals(), hashCode(), and toString(), as well as accessor methods for the fields. This…

Introduction : The java.util.Objects class was introduced to address common object-related tasks in a consistent and concise manner. Prior to Java 7, developers had to manually handle certain tasks such as null-checking, equality testing, and hash code calculation, often leading to verbose and error-prone code. The Objects class provides static utility methods that help…

Introduction: Elasticsearch is a powerful open-source search and analytics engine built on top of Apache Lucene. It provides a distributed, RESTful search and analytics service, making it ideal for various applications like full-text search, log analysis, and data visualization. This tutorial will guide you through integrating Java with Elasticsearch, covering basic operations and examples.…

MapStruct is a Java-based code generation library that simplifies the mapping between Java bean types. It generates mapping code at compile-time, reducing the need for boilerplate code and improving maintainability. In this tutorial, we'll explore the basics of MapStruct with examples. Installation To get started with MapStruct, you need to include the MapStruct dependencies…

Introduction: Java I/O (Input/Output) is a crucial aspect of programming, enabling the handling of data streams, files, and other external sources. The java.io package provides a versatile set of classes and interfaces for performing I/O operations. In this tutorial, we will explore the basics of Java I/O, covering common scenarios and providing examples to…

Jersey is a popular open-source framework for building RESTful web services in Java. This tutorial will guide you through the process of creating a simple RESTful API using Java and Jersey. Step 1: Set Up Your Project Create a new Maven or Gradle project in your favorite IDE. Add the necessary dependencies for Jersey.…

Introduction: In Java, the String class is a part of the java.lang package and is used to represent sequences of characters. Strings are immutable, which means their values cannot be changed once they are created. In this tutorial, we'll explore various operations and methods available in the String class. 1. Creating Strings: Strings in…

Introduction: Quartz Scheduler is a widely-used open-source library for scheduling and executing tasks in Java applications. It provides powerful features for job scheduling, cron-like expressions, and support for clustering. In this tutorial, we'll explore the basics of Quartz Scheduler and walk through practical examples to demonstrate its capabilities. Prerequisites: Before starting, ensure you have…

1. Introduction In Java, threads are instances of the Thread class or objects implementing the Runnable interface. A Java program itself is a single thread called the "main" thread. 2. Creating Threads a. Extending the Thread Class b. Implementing the Runnable Interface 3. Thread Lifecycle Threads in Java go through different states, including NEW,…