Flyweight Design Pattern With Examples Using Java 21 Core Java Design Patterns java Java 21 jdk 21 by devs5003 - January 29, 2025February 1, 20251 Flyweight Design Pattern in Java: A Comprehensive Guide The Flyweight Design Pattern is one of the structural design patterns introduced by the Gang of Four (GoF). It focuses on minimizing memory usage and improving performance by sharing as much data as possible with other similar objects. This pattern is particularly useful in applications where a large number of objects with similar characteristics are required. In this article, we will dive deep into the Flyweight pattern, understand its components, explore its advantages and limitations, and look at real-world use cases. We will also implement the pattern in Java with clear, concise examples to solidify the concepts. What is the Flyweight Pattern? The Flyweight Pattern is designed to reduce the number of objects created and decrease
Java Records vs JPA Entities and Lombok Core Java java JPA Lombok Lombok Java Record In Java by devs5003 - January 22, 2025January 25, 20251 Java Records vs JPA Entities and Lombok: A Comprehensive Comparison JPA entities are the basic concepts for those who have developed a Java project using JPA or any JPA based framework such as Hibernate. While developing such project, we create an entity class as the first step. After the introduction of Record classes, it becomes a part of discussion whether we can use Records in place of Entities or not. Java Records provide a concise way to define immutable data objects. On the other hand, JPA Entities are the backbone of persistence in Java applications, that allow objects to be stored and retrieved from databases. This article explores the similarities, differences, and use cases for Java Records and JPA Entities, with examples, pros,
How to Configure JDK in Eclipse or STS Core Java IDE java by devs5003 - January 17, 2025January 17, 20250 How to Configure JDK in Eclipse or STS ? Configuring the Java Development Kit (JDK) in Eclipse or Spring Tool Suite (STS) is a crucial step for any Java developer. Whether you are a beginner or intermediate in java development, you might face some issue in configuring JDK in your IDE such as Eclipse or STS. This guide provides a detailed step-by-step process for configuring JDK in Eclipse or STS, along with common errors and their solutions. Prerequisites Before proceeding with JDK configuration, make sure that you have the following in your system: JDK Installation: Download and install the latest version of the JDK from Oracle's official website or OpenJDK if you don't have it already. Eclipse or STS Installation: Download and install the latest
How to add JDK 21 support in Eclipse or STS Core Java eclipse IDE java Java 21 by devs5003 - January 15, 2025January 20, 20250 Eclipse not recognizing Java-21, How to add JDK 21 support in Eclipse 2023-09?, How to add JDK 21 support in Eclipse or STS, jdk21 IDE , jdk21 eclipse, eclipse jdk21, eclipse java 21, java 21 eclipse, eclipse java 21 support, eclipse for java 21, JDK 21 support in Eclipse 2023-09 - java, add java 21 to eclipse, how to add java 21 to eclipse, eclipse openjdk 21, eclipse java 21 plugin, eclipse support java 21, jdk 21 eclipse, eclipse compiler compliance level 21 not available, sts java 21, add jdk 21 to eclipse, how to add jdk 21 in eclipse Oracle has released JDK 21 in September, 2023 as an LTS version after the release of JDK 20 in March, 2023.
Java 21 New Features With Examples Core Java java Java 21 by devs5003 - January 8, 2025January 20, 20250 After Java 17, Java 21 is the next LTS version. Java 21 comes with various new features, some preview features, enhancements, deprecation & deletions. It is inclined to improve developer productivity and program efficiency. In this article, we will explore some of the most essential developer’s friendly Java 21 new features with examples. You may also go through Java 17 Features With Examples. Java 21 New Features Here is the list of Java 21 New Features: String Templates (Preview) [JEP-430] Sequenced Collections [JEP-431] Record Patterns [JEP-440] Pattern Matching for switch [JEP-441] Unnamed Patterns and Variables (Preview) [JEP-443] Unnamed Classes and Instance Main Methods (Preview) [JEP-445] Scoped Values (Preview) [JEP-446] Generational ZGC [JEP-439] Virtual Threads [JEP-444] Foreign Function & Memory API (Third Preview) [JEP-442] Vector
Java 17 Interview Questions & Answers Explained: Practice Test Core Java Interview java Java 17 Java MCQ by devs5003 - December 22, 2024December 25, 20240 In this article, we will explore Java 17 Interview Questions & Answers with detailed explanation. We can also consider this article as a complete practice test for the concepts discussed. We have covered all types of questions such as concept-based, code-based and scenario-based. Some of the questions are based on features of Java 21 as well. On going through all the questions, you will have both conceptual & practical knowledge of the topics. These questions will make you aware about not only Java 17 features but other lower/higher version's features also. You must go through the explanation part of each question which will help you to clear your additional concepts. Java 17 Interview Questions & Answers Explained [Concept-Based | Single-Select] Q#1. Which of the
Guarded Pattern in Java 21 switch-case Core Java java Java 17 Java 21 by devs5003 - December 16, 2024December 25, 20240 Guarded Pattern in Java: A Comprehensive Guide with Examples Java has undergone significant evolution over the years, and with the introduction of Java 17, several advanced features were added to the language. One such feature is the "Guarded Pattern" in enhanced switch expressions and pattern matching. This article explores the guarded pattern, its use cases, and practical examples to demonstrate its power and utility. The Guarded Pattern was introduced as a preview feature in Java 17 under JEP 406 for adding conditional logic directly in switch case labels. It was finalized in Java 21, making it a stable feature for developers. What is a Guarded Pattern? A guarded pattern in Java is a conditional pattern that allows us to define additional constraints on pattern matching.
How To Migrate From Java 8 to Java 17 Core Java java Java 17 Java 8 by devs5003 - December 11, 2024December 18, 20240 From Java 8 to Java 17, there have been several improvements in the Java coding. However, Java 17 has been released on September 21, 2021, but there are several projects in the industry which are yet to be upgraded. Undoubtedly, it's not that much easy task for the big applications where in there are billions of lines of code. In this article, we will discuss about 'How to migrate from Java 8 to Java 17' & higher versions, especially the upgradation in source code. We will also explore the new features till Java 17 in comparison to Java 8 or earlier versions. Each feature will be demonstrated with an example in Java 8, followed by its equivalent implementation in Java 17. Some
Java 17 Coding Interview Questions and Solutions Core Java Interview java Java 17 Programming by devs5003 - December 4, 2024December 22, 20240 Java 17 Coding Interview Questions and Solutions In this article we will explore various real world coding problems & their solutions using Java 17 or later versions. These questions are based on the most significant Java 17 features to help you understand how to use them effectively in real time projects. For conceptual knowledge of Java 17 new features, kindly refer Java 17 Features with examples. Java 17 Coding Interview Questions and Solutions Problem#1: Identify Leap Years -- Using Ternary Conditional Operator in case statement Write a program that determines whether a year is a leap year or a common year. Use Java 17 features to write your code. Solution: public class LeapYearChecker { public static String checkYear(Number year) {
Collection MCQ in Java with Answers Explained Collections collections in java Core Java java MCQ by devs5003 - November 18, 2024November 20, 20240 Definitely, Collections are the most important for a Java developer. You can't imagine even a minor project in Java without the use of Collections. Moreover, in order to work in an industry level project, you must have a good grasp on Collections in Java. Apart from going through theoretical concepts multiple times, it is highly advisable that developers need much practice & revision of concepts. One of the ways to achieve this is by attempting FAQs/MCQs on collections. In this article, we will be doing theoretical practice on ‘Java Collections’ in the form of MCQs that are frequently asked in the interviews as well. Definitely, you must find this article 'Collection MCQ in Java with Answers Explained' beneficial whether it is