Autowiring in Spring

by devs5003 - March 27, 2023July 11, 20260

If you are a Java developer, dependency Injection in Spring framework must not be the new term for you. One of the key features of Spring framework is dependency injection, which makes it easy to manage dependencies between objects. On the other hand, autowiring is a form of dependency injection in Spring that allows IOC container to automatically wire beans together without the need for explicit configuration. In this article, we'll explore autowiring in Spring, the different ways of doing it, its features, limitations, and how to use it effectively with ample amount of examples covering all the scenarios. Autowiring in Spring not only reduces boilerplate code but also simplifies maintenance and testing. However, while autowiring is a handy tool in

MongoTemplate Spring Boot Example

by devs5003 - March 7, 2023May 3, 20263

In continuation to series of tutorials on Spring Boot with MongoDB, we have already discussed various examples using MongoRepository interface. Now in this article we are going to discuss a different way of accessing data from MongoDB. This is nothing but MongoTemplate. MongoTemplate is defined by Spring Data MongoDB, used to perform DB operations without using any repository interface. If you are reading this article in context of Spring Boot, you must have heard about the term JDBCTemplate. Like JDBCTemplate, MongoTemplate is a class which provides us different handy methods to work on various DB operations. However, we generally use it to retrieve data from MongoDB using different Criteria queries. Hence, our topic here is to discuss is 'MongoTemplate Spring Boot

Spring Core Interview Questions

by devs5003 - February 28, 2023January 22, 20260

If you are preparing for a job interview in the field of Java development, it is essential to have a strong insight on Spring Core. Even being a Java developer, you must have Spring Boot knowledge to get shortlisted for a job interview. Furthermore, while working with a Spring Boot project, you must be using Spring Core Concepts. This article on 'Spring Core Interview Questions' will also benefit you as a Spring Core Concept refresher. Spring is one of the most popular Java frameworks, widely used in developing enterprise-level applications. The Spring Core module is the foundation of the Spring Framework, providing essential features such as dependency injection and inversion of control. In this article, we'll cover some essential Spring Core

How to implement Security in Spring Boot Project?

by devs5003 - February 19, 2023April 7, 20265

Now a days, almost every client demands for implementation of powerful security feature in real time application. Demand of security feature is very valid to maintain confidentiality, integrity and availability. There are many types of security in the real world, but we as a developer will focus on the Application/Software Security. Furthermore, in Application Security, our job is to ensure basically two things. First, only valid user can access the application. Second, If the user is valid, he/she can access only permitted data/information in that application. I consider, there is nothing to explain more about them as you must already be aware of these two terminologies i.e. Authentication & Authorization. You might already have guessed what we will discuss in our

What is Bean in Spring | Spring Bean Explained

by devs5003 - January 10, 2023May 26, 20260

Every Java Developer come across the terms Java Bean, Bean Class & Spring Bean. Most of the times people think that all are the same and used interchangeably. Even sometimes people consider them as a simple POJO class. In fact, these all have some logical differences. There is some set of standards & guidelines provided by Programmers that makes them different from each other. In this article 'What is Bean in Spring?', we will start with the fundamentals which are also essential to know, then we will discuss the Spring Bean with examples. Please note that if you define a class that doesn't follow the guidelines of being a Spring Bean, the Java compiler will never complain you. In contrast, the

New Features In Spring Framework 6

by devs5003 - December 31, 2022October 11, 20230

Spring Framework 6, released on November 2022, is the major version change and containing many upgraded features and changes into the Spring development environment. On the other hand, Spring Boot 3 also released on November 2022, is based on Spring Framework 6, also changes a lot of things. We need to know about the changes in new versions in order to make smooth development of an application in the future. In this article, we will discuss about ‘New Features in Spring Framework 6’. Spring Boot 3.0 is also the first Spring Boot GA release, which is based on the Spring Framework 6.0. As a developer, we need to be aware of these updates in order to work smoothly with Spring Framework.

How to write REST Consumer API using Spring Boot RestTemplate

by devs5003 - December 30, 2022July 2, 20250

Apart from three well known layers i.e. Presentation Layer, Service Layer and Data Layer, we may also have an Integration Layer. This layer generally works with the web services concept and connects two different applications to exchange data between them. One application refers to producer/provider, whereas other refers to consumers. However, we have already gone through the REST Producer API in another article where we had developed different operations to produce REST API. Now, we must have a question in mind 'How to write REST Consumer API using Spring Boot RestTemplate'. We had also discussed a bit about RestTemplate( The Spring REST Client). In fact, RestTemplate provides us Consumer methods to consume services provided by producer applications. We can even have

Elasticsearch with Spring Boot Using Spring Data Elasticsearch CRUD Examples

by devs5003 - November 16, 2022May 1, 20251

spring data elasticsearch examplespring data elasticsearch exampleIn this article, we will learn how to develop 'Spring Data Elasticsearch CRUD Examples Using Elasticsearch with Spring Boot'. We will start with the basics of Elasticseach as a theoretical part. In practical part we are going to discuss how to setup Elasticsearch in our system and make it ready to work. Then, we will move to the development of our example. Apart from CRUD operation with UI, we will also get into 'How to create a REST API using Elasticsearch with Spring Boot. What is Elasticsearch? Elasticsearch provides the capability to store, search, and analyze huge volumes of both structured and unstructured data. It primarily works on the concept of indexing. Since it also capable

How To Deploy Spring Boot Application To Heroku

by devs5003 - September 28, 2022November 12, 20232

The development of a software application goes through multiple stages like: requirement analysis, designing, coding, testing. Once testing is completed successfully, we need to deploy the application somewhere in a server so that users can access it from anywhere. Generally, we deploy the application in the Cloud environment. Heroku is the cloud environment that provides us deployable infrastructure. So, we are going to discuss 'How To Deploy Spring Boot Application to Heroku'? in this article. Spring Boot’s flexible packaging options provide a great deal of choice when it comes to deploying your application. We can deploy Spring Boot applications to a variety of cloud platforms, to virtual/real machines, or make them fully executable for Unix systems. Here in this article we

Spring Bean Life Cycle Method Examples

by devs5003 - September 13, 2022May 3, 20260

In the context of Spring Framework, if we want to execute some code after the bean construction, then we can write that code inside the custom init() method. Similarly, if we want to execute some code just before the destruction of the bean, we can write that code inside destroy() method. These methods are called Spring Bean Life Cycle Methods. Here in this article we will develop 'Spring Bean Life Cycle Method Examples'. The bean life cycle is managed by the spring container. When we run the program, first of all, the spring container gets started. After that, the container creates the instance of a bean as per the request, and then the required dependencies are injected. At the end, the bean