In this article, you will learn how to perform user authentication with Amazon Cognito in a Spring Boot application. But before we dive into that, let’s first explore what Amazon Cognito is. According to what’s mentioned on the AWS official website: Amazon Cognito lets you add user sign-up, sign-in, and access control to your web…
Read More User Authentication with Amazon Cognito in Spring Boot ApplicationIn this article, we will learn about Many-to-Many relationships in JPA and how to implement them in a Spring Boot application. Let’s get started! @ManytoMany annotation A many-to-many relationship occurs when multiple records in one table are associated with multiple records in another table. The @ManyToMany annotation is used to define a many-valued association with…
Read More Many-to-Many Relationship in Spring Boot Rest with JPAIn this guide, I will walk you through the Caching Abstraction in Spring Boot and how to improve the application’s performance. I will walk you through how to enable default caching in Spring Boot with an example of different use cases. What is Cache? A cache is a small and fast, efficient memory space that…
Read More Spring Boot Caching with ExamplesAWS Lambda is a service that lets you run code without provisioning or managing servers. In this tutorial, I will share with you how to create a very simple Lambda function in Java and run it on AWS. Prerequisites To be able to follow this tutorial, you will need to have the following: An AWS account,…
Read More A Simple AWS Lambda Function in JavaIn this tutorial, you will learn what the @Service annotation is and how to use it in your Spring Boot applications. @Service annotation is a part of the Spring Framework, and you will use it to mark a class as a service layer component. This annotation is typically used in conjunction with @Component, which is…
Read More @Service Annotation in SpringIn this tutorial, you will learn how to enable the Actuator’s httpTrace endpoint in Spring Boot 3. In fact, /httptrace has been renamed to /httpexchanges, so this tutorial will teach you how to enable the Actuator’s /httpexchanges API endpoint instead of /httptrace. The httpexchanges endpoint provides information about HTTP request-response exchanges. These HTTP exchanges are essentially…
Read More How to Enable Actuator’s HttpTrace in Spring Boot 3What is Spring Batch? Spring Batch is a lightweight, broad batch framework that builds upon the characteristics of the Spring Framework that enables the development of robust batch applications, which plays a vital role in the daily operations of enterprise systems. Spring Batch provides many reusable functions that are necessary for processing records with large…
Read More Spring Batch TutorialIn this tutorial, we will discuss how to Mock Objects and Stub Methods with Mockito, and we will see various ways to stub with common scenarios and examples. Mocking and stubbing are the basis of writing clean and simple unit tests. So, let’s begin! Visit our Mockito introductory level tutorial if you are a beginner…
Read More How to Mock Objects and Stub Methods with Mockito?This tutorial will teach you how to leverage RestTemplate to access RESTful APIs protected by basic authentication. You will learn to create a Basic Authentication-secured REST API and access it via RestTemplate. What is Basic Authentication As the name suggests, it is a basic form of authentication in which we must provide the correct username…
Read More RestTemplate Example with Basic AuthenticationIn today’s world of agile development, writing unit tests is vital and helpful in producing high-quality code. Unit tests ensure that the code complies with quality standards and that issues are identified before deployment. Java offers various testing frameworks to make the lives of developers easier, with Mockito being one of the well-known ones. In…
Read More An Introduction to the Mockito FrameworkIn this tutorial, you will learn how to use TestRestTemplate to get a list of objects. If you are also interested to learn how to send an HTTP POST request, then please have a look at the “TestRestTemplate HTTP Post Example” tutorial. Maven Dependency To use TestRestTemplate in your Spring Boot project, you should have the…
Read More Get List of Objects with TestRestTemplateThis tutorial will teach you how to use TestRestTemplate to send HTTP Post requests. If you are also interested to learn how to send an HTTP GET request, then please have a look at the “Get List of Objects with TestRestTemplate” tutorial. What is TestRestTemplate? TestRestTemplate is HTTP Client that you use for Spring Boot…
Read More TestRestTemplate HTTP Post ExampleThis article will explore the JUnit 5 Assertions API, go in-depth with examples of building fundamental assertions, and look at customizing the error message that appears when an assertion fails. We’ll also discuss how to execute many assertions simultaneously as an assertion group in our last section. So, let’s begin! What are JUnit Assertions? As…
Read More An Overview of JUnit 5 Assertions with ExamplesIn this tutorial, you will learn how to create a new Spring Boot project using Spring Initializr tool. What is String Initializr? Spring Initializr is a tool that helps you easily generate a new Spring Boot project and download it in a ZIP file. You can then open the created project in any Java development environment of your…
Read More Create Spring Boot Project with Spring InitializrIn a real-world scenario, when testing a system, there are some instances in which a test should only be executed under a specific environment. Integration tests that rely on a third-party system such as Operating System are one example. If that system goes down, we’ll omit the tests that need it to avoid build failure.…
Read More A Guide to Conditional Tests Execution Using JUnit 5