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How to handle Exceptions in Spring Boot?

by shwetas8536 - 3

Every one of us spend ample amount of time in learning big topics of Spring & Spring Boot. For example, Spring Boot REST, Spring Boot MVC, Spring Boot Security and many more, but generally we don't think about 'How to handle Exceptions in Spring Boot?'. This topic might become the most important for running the application without any interference. Also, it is very helpful in making other developers understand our code flow easily. Even finding out the origin of errors & exceptions becomes very irritating, if we have not handled them properly in our code. Sometimes, we need to debug the whole flow of code to find it out & resolve accordingly. In this way, Exception handling plays an important role

Spring Scheduling Cron Expression

by devs5003 - 0

When we have a requirement where we need to run a task/job repeatedly after a particular time interval, we achieve this functionality by implementing Scheduling. For Java developers, Spring Framework makes it simple by offering Spring Scheduler. Moreover, Cron Expressions are the most widely used approach to achieve scheduling. Cron Expressions are very popular in Unix/Linux OS for scheduling. Spring framework also incorporates the same concept internally. Spring Framework offers us an API where we can utilize Cron expression to get the task scheduled. This article about 'Spring Scheduling Cron Expression' includes all the new improvements in Cron Expressions in Spring 5.3. However, there are some other approaches to get our task scheduled using Spring/Spring Boot, but here in this article

How to Write Spring Boot Application Properties Files

by devs5003 - 0

If you are a Spring Boot developer, you must have come across the 'application.properties' or 'application.yml' file. Needless to say, these files reduces your development effort by minimizing the amount of XMLs that you were writing in a standard Spring based project. Moreover, we accommodate the common properties of our project in the form of key-value pairs in these files. Therefore, it becomes more than important to know all about these files. These are application properties file with the extension of either '.properties' or '.yml'. The topic of discussion for this article is 'How to Write Spring Boot Application Properties Files'. Furthermore, Spring Boot already provides some of the ready-made keys that we use most of the times in our project.

Spring Boot MongoDB CRUD Example

by devs5003 - 0

In continuation to MongoDB setup and how to work with Spring Boot in MongoDB, now in this article we will learn the most important DB operations. If we are in Software development world, we should at least know 'How to write CRUD operation on the database front'. Needless to say, how much importance these operations have. If you are developing any web application in any programming language, you can't escape from these operations. CRUD is nothing but an abbreviation to Create, Read, Update and Delete. Moreover, development of CRUD operations is expected from all developers. We will learn 'Spring Boot MongoDB CRUD Example' in this article. In order to implement CRUD Operations in Spring Boot with MongoDB, we will make use

How To Become a Good Java Developer?

by devs5003 - 0

There are numerous programming languages that programmers and developers can use today from C language, C++ to Python etc. Java may be a language that is considered versatile due to its ability to be utilized in designing customized apps that are fast and lightweight. Programming languages are designed to shape out a developer's future, they are used to make different apps, wonderful websites, and several software products you see around you. Consider the big giants like Amazon, Google, and the rest other major industry players are using Java in a mature manner. Becoming expert Java developers puts individuals in the front line within the industry. Moreover, many companies are trying to find developers proficient in Java. Let's talk about some popularity

Spring Boot Annotations With Examples

by devs5003 - 7

Spring Boot Annotations List with Examples: Springboot All Annotations Prior to Annotations, the Spring Framework's configuration was largely dependent on XMLs. Using XML configurations was not only a tedious process, but also an error-prone. If you committed any syntactical mistake in XML, sometimes it takes time to fix. But now-a-days annotations, particularly Spring Boot Annotations provide us remarkable capabilities in configuring Spring Framework's behavior. Moreover, Annotations caused major changes in programming style and slowly making the XML-based configurations outdated. The Java Programming introduced support for Annotations from JDK 1.5. However Spring Framework started supporting annotations from the release 2.5. Obviously, we are going to discuss about Spring Boot Annotations With Examples and their usages. Here in this article on 'Spring Boot Annotations

WebClient in Spring Boot

by devs5003 - 1

A typical modern web application generally has four well known layers i.e. Presentation Layer, Service Layer and Data Layer, and an Integration Layer. The Integration 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. Here, we will discuss about REST consumer/client API using WebClient in Spring Boot. The traditional way of implementing REST client API is by using RestTemplate. However, we have already gone through the RestTemplate in another article where we had developed different operations to consume REST API. Now, we must have a question in mind ‘How to write REST Consumer API using WebClient in Spring Boot?’. Needless to say, WebClient

Spring Boot MongoDB Query Examples

by devs5003 - 0

Spring Boot MongoDB @Query Examples, Spring Data MongoDB Queries, @Query Annotation in Spring Boot MongoDB, Spring Boot MongoDB Query Examples, Spring Data MongoDB Queries, @Query mongodb spring boot example, mongodb queries, spring mongodb, @query mongodb spring, @query in spring boot mongodb, spring boot mongodb query like, mongodb spring boot custom query In previous article 'Spring Boot MongoDB CRUD Example', we have already covered the 'How to write CRUD operations using Spring Boot & MongoDB'. Further, in this article we will learn 'How to develop queries using Spring Boot & MongoDB'. However, if we extend our custom Repository interface from MongoRepository<T, ID>, we can at least develop CRUD operations without adding any method in our custom Repository. But sometimes, we need complex

Java Excel Apis To Read Excel File In Java Using Poiji API

by devs5003 - 2

Java Excel Apis to read excel file in Java using Poiji Almost every Java developer come across one of the most common requirements expected by the clients. The requirement is working with excel either to generate reports or to take input data from excel. As a java developer, we should be aware of the mapping between excel data & java objects. If we can have an API which can directly map excel cell to a field (property) of a java class, then it will become very easy to implement any kind of operation on excel. No surprise ! We have an API called Poiji(A Java Excel API). It is developed on top of very popular Apache POI just like Spring Boot on

Spring WebFlux CRUD Example

by devs5003 - 0

All Java developers must have worked on traditional REST APIs at some point in their career. Other than the traditional approach of developing a REST API, now we have a new upgraded way of doing it. Reactive Programming as a new approach to working with REST APIs. Compared to traditional REST development, this approach is faster and offers for optimal resource utilization. In this article, we will work on the concepts of Spring WebFlux, which comes under the Reactive Programming model. Spring WebFlux is a reactive web framework built on top of Spring Framework 5, designed to handle the demands of modern web applications. Spring WebFlux provides a non-blocking and event-driven programming model that allows developers to build scalable and high-performance

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