Hello folks, In Java and Spring Framework, effective handling of HTTP requests is very important for building robust web applications. Two essential annotations, @RequestMapping and @PathVariable, play a crucial role in mapping URLs to controller methods and extracting values from them. This is also one of the popular Spring MVC…

Today we are releasing GraalVM 22.0! It brings new features and improvements throughout all its components, and we’ll talk about the highlights in this blog post. Get Updated We are releasing GraalVM 22.0 for JDK 11 and JDK 17. As always, you can download GraalVM Community from GitHub, and get the GraalVM…

In this blog post, we are going to understand the differences between String, StringBuilder, and StringBuffer. Making decisions about which class to use based on specific requirements and performance considerations. Understanding the strengths and weaknesses of these classes is crucial for optimizing string manipulation operations in your Java applications. String: Immutable but Simple The…

Both practical and challenging, don’t skip this topic — Why Java Stream? Stream is one of the best improvement in Java 8 compared with Java 7. But some of its API, are complicated and hard to understand, especially those of Collector and those for reduction. I dare say that even experienced Java Stream users may still find them intimidating. Despite having using…

In today’s article let’s discuss one of the powerful tools provided by Java, Stream API. What is Stream Api? So it’s the sequence of objects that provides various methods to process our collections of objects. Stream doesn’t change the original data structure it just processes the data based on the pipelined method. What are the advantages of using stream API over the traditional way of processing data?

RestTemplate has been deprecated in favor of the newer WebClient in Spring Framework 5.0 and later versions. This means that while the RestTemplate is still available for use, Spring developers are encouraged to migrate to WebClient for new projects. There are several reasons why WebClient is preferred over RestTemplate: Non-blocking…

JAVA is one of the most popular and widely used programming languages. In many cases, it is the first choice for enterprise application development. Even now billions of devices are powered by JAVA. If you are reading this article on your Android — you got it! …

What is the role of the TransactionManager in Spring Boot’s transaction management? When a method annotated with @Transactional is called, Spring Boot uses the TransactionManager to create a new transaction or join an existing one. The TransactionManager then manages the transaction's lifecycle, including committing or rolling back the transaction based on the success or failure of the transactional operation.

A connection pool is a cache of database connections maintained so that the connections can be reused when needed, reducing the overhead of establishing new connections each time the application interacts with the database. A database connection pool is a mechanism used to manage and reuse database connections in a…

In the realm of modern application development, real-time communication is no longer a luxury but a necessity. Asynchronous API design is the key to achieving this, enabling applications to provide timely updates and notifications without the constraints of traditional request-response patterns. In this article, we’ll explore four powerful techniques for…

In this article, we will explore some common interview questions frequently asked during senior Java developer interviews. These questions cover a broad range of topics, including core Java concepts, object-oriented programming principles, design patterns, spring-boot, Hibernate JPA, and more. By familiarizing yourself with these questions and their potential answers, you can better prepare for your next senior Java developer interview and showcase your expertise in the field.

Introduction Spring Framework, which has always been known for its powerful Dependency Injection (DI) capabilities, offers a variety of ways to define and register beans. One such advanced feature is the @Conditional annotation, which allows for conditional bean registration based on certain conditions at runtime. This feature becomes incredibly…

Angular Signals have been available since Angular 16.0.0, and one of the best ways to understand how important of a feature it is is to compare Signals to RxJs. This post will highlight several different examples. Receiving data in a Typescript class With RxJs Observables, we need a subscription to get our data: myData$: Observable<Data>; this.myData$.subscribe(d =>…

If you’ve been working on UI development for a while, chances are you’ve had to deal with charts and maps at some point. Now, there are plenty of fantastic open-source libraries for creating charts, but when it comes to interactive maps, you might find yourself leaning towards react-simple-maps. …

Introduction.. In this tutorial, you will learn how to implement JWT (JSON Web Token) authentication system using Spring Boot and Spring security. First I hope to explain some basics theories regarding to this tutorial. …

The key contribution that Java 8 introduced to the Java programming model is functional programming. This article focuses on questions related to functional programming, and some other significant changes that the Java 8 release introduced. We’ll go over examples of interview questions related to Lambda calculus, functional interfaces, and more…

In Java, there are three main types of variables: static variables, instance (class) variables, and local variables. Each type serves a different purpose and has its own scope and rules for usage. Here’s an explanation of each type with examples and guidelines for when to use them: 1. Static Variables…

In this article, I will be posting Java Developer Interview transcripts of Service based companies, These sets of questions are asked to 8+ years of experience candidates. Let's dive into this, (A bit of context: I’ve conducted numerous interviews for software engineering positions in most of the MNCs. …

Explore the seamless integration of Kafka messaging with Spring Boot in this comprehensive guide. The importance of processing data in real-time and ensuring seamless communication between different parts of an application cannot be overstated. One technology that has gained significant traction for enabling such capabilities is Apache Kafka. …

If you are not a Medium member then you can use below friendly link to read the complete story. Friendly Link so that everyone can read my article. Hi Reader!!! Loop? Loop in any programming language helps to execute the block of code multiple times without writing it repeatedly. We…