Java Testing Frameworks Core Java java Java Testing by devs5003 - April 22, 2024April 25, 20240 A Comprehensive Guide to Java Testing Frameworks Testing in Java applications is an essential part of the software development process It plays a vital role in reliability, code quality, and the complete success of the application. There are various testing frameworks that make testing easier for developers & testers. These frameworks provide systematic conditions that allow developers to write, organize, and execute tests in a structured manner. Their primary purpose is to validate the correctness, functionality, and performance of the code under diverse conditions. A Comprehensive Guide to Java Testing Frameworks These frameworks facilitate different types of testing methodologies. For example, Unit testing focuses on verifying the smallest parts of an application, such as individual methods or classes. On the other hand, Integration testing
Spring Dependency Injection java Spring Spring Boot Spring Core by devs5003 - April 18, 2024April 19, 20240 If you are working in a project where spring is being used, you must have heard about the term 'Spring Dependency Injection'. If not, this is the right time to dig into it as much as possible without further delay. Needless to say, Spring dependency Injection is the heart of the whole Spring Framework. I would also suggest you to go through the practical knowledge of it. However, it is also true that someone can't understand the concept of Spring Dependency Injection only having the theoretical knowledge. If you are expecting to learn all the basic and crucial concept behind the Spring Dependency Injection step by step, and if you don't want to revise the concept more than a hundred times
How to work with Apache Kafka in Spring Boot? Apache Kafka java Spring Boot by devs5003 - April 17, 2024April 18, 20248 Now-a-days, many modern systems require data to be processed for the targeted purpose as soon as it becomes available. For example, as a developer, if we talk about a Logging or Monitoring system, we often require the data as soon as a problem occurs. In a nutshell, there is a high requirement of faster & robust data delivery. Here, Apache Kafka can be a good option to solve our purpose. In a single line, Apache Kafka acts as a mediator to transmit data between applications that generate data and applications that consume data. Needless to say, we are going to discuss about 'How to work with Apache Kafka in Spring Boot?' here in this topic. If you want to know the
Java 17 Features Core Java java Java 17 jdk 17 by devs5003 - April 13, 2024April 15, 20240 Undoubtedly, the demand of Java 17 features became crucial after the release of Spring Boot 3.0. Needless to say, the use of Java 17 has become mandatory since Spring Boot 3.0. It also means that every Java developer should be aware of the new changes introduced in Java 17. Java 17 comes with several new features and enhancements that aim to improve developer productivity and program efficiency. In this article, we will explore some of the most significant Java 17 features, with code examples to help you understand how to use them effectively. Java 17 is an LTS (Long-term support) release of the Java programming language. As it is an LTS version, it will receive prolonged support and security updates for
Profiles In Spring Boot java Spring Spring Boot by devs5003 - April 10, 2024April 11, 20244 When we work on a real time project, we maintain multiple environment for the same project. This happens because we use different infrastructures for different stages of the project. There are different useful environments that we maintain before making the project go live, such as: development (DEV), test, user acceptance testing (UAT), production (PROD). These environments are not fixed at all. Some projects may have some more environments or even sometimes less also. It totally depends on the decisions made by stakeholders involved in the specific project and its requirements. Spring Framework offers us to maintain a separate profile for each environment in order to switch over the environments with a minimal effort. Hence, our topic of discussion is 'Profiles In
Entity Relationship in JPA/Hibernate/ORM java Entity Relationship Hibernate Spring Data JPA by devs5003 - April 8, 2024April 12, 20240 Needless to say, ORM (Object Relational Mapping) concept has made the developers life easier. Developers don't need to do much work in order to map two tables in the database. If we need to maintain a relationship between two tables, utilization of an annotation in our entity/class is more than sufficient. Further, we don't need to design the DB tables. However, developers need to have a better understanding of the usage of the annotations that create a relationship between two tables. Here in this article 'Entity Relationship in JPA/Hibernate/ORM', we will discuss about the different types of relations between tables that are relevant in ORM concept. Let's start discussing our topic ‘Entity Relationship in JPA/Hibernate/ORM’ and its related concepts. Some of the
Java 8 Coding Interview Questions Core Java Interview java by devs5003 - April 4, 2024April 20, 20244 In this article, We will discuss about Java 8 Coding Interview Questions and their Answers. Moreover, we will try to provide multiple approaches to solve a coding problem. Additionally, related concepts to a particular coding problem will also be discussed. Our primary focus of this article is to provide all important Java 8 Coding Interview Questions with their Answers. However, for theoretical questions & answers of Java Interview, kindly visit our another article 'Java Interview Questions'. How to iterate and modify value in a Map using Java 8? Here is the program to update & iterate a Map in Java 8. public class MapUpdateTest { public static void main(String[] args) { Map<String,String> map =
Types Of NoSQL Databases and Examples Database NoSQL by devs5003 - April 1, 2024April 23, 20242 As a Java developer, we can’t develop an insightful application without the use of a database software. Traditionally, we use a relational database to work with an application. Of course, a relational database is a structured database and contains multiple tables to maintain meaningful relations between them. Additionally, it uses SQL like queries to operate with data stored in the tables. In contrast, suppose we have to work with a large amount of unstructured data which is not advantageous to store in the form of tables, keeping other factors in mind as well, then how will we store our data? The simple answer is ‘we should use NoSQL database’ in that case. Further, you might even have some other questions in
Java 22 New Features With Examples Core Java java Java 22 by devs5003 - March 31, 2024April 7, 20240 Java Development Kit 22, the next version of Java Standard Edition, is now available as a production release on March 19, 2024. Java 22 comes with 12 significant features including seven preview features and one incubator feature. 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 22 new features with examples. Java 22 New Features With Examples Let's start going through Java 22 New Features with examples one by one. Unnamed Variables & Patterns (JEP 456) This was introduced in Java 21 as a preview feature under the name "Unnamed Patterns and Variables", and now it is finalized in Java22 as "Unnamed Variables & Patterns" without any changes. Many a
Method Reference in Java 8 [::] Java 8 Core Java java by devs5003 - March 20, 2024March 21, 20242 Method Reference is a wonderful feature introduced in Java 8. Apart from taking advantage of functional programming, one of the biggest advantages in using a Lambda expression is to minimize the lines of code. Similarly, Method Reference in Java 8 [::] also minimizes lines of code even more than Lambda. However, we use both of them in the presence of functional interfaces only. Moreover, It is also a concise and simpler form of lambda expression. In this article, we will also learn how to change a Lambda expression into a method reference. Let's start discussing about 'Method Reference in Java 8 [::]' and it's related concepts. What is Method Reference(::)? As we have seen in Lambda expression topic that we use lambda