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The State of Java in 2019 I’ve been running the yearly 2019 “State of Java” survey for the last couple of weeks. In its 6th year, we had 6707 developers taking the time to go through and answer; if that was you – thank you! Time for the results ?… Continue Reading java-in-2019
Design Patterns Series Creational Patterns + /bootstraping-a-web-application-with-spring-and-java-based-configurationIntroduction to Creational Design Patterns + /building-a-restful-web-service-with-spring-and-java-based-configuration/java-builder-pattern-freebuilderAutomatic Generation of the Builder Pattern with FreeBuilder + /securing-a-restful-web-service-with-spring-securityUsing the @Singular Annotation with Lombok Builders + /basic-and-digest-authentication-for-a-rest-api-with-spring-securityLombok Builder with Custom Setter + /rest-api-pagination-in-springLombok @Builder with Inheritance + /exception-handling-for-rest-with-springCreational Design Patterns in Kotlin: Builder + /entity-to-and-from-dto-for-a-java-spring-application/lombok-builder/java-abstract-factory-patternUsing Lombok’s @Builder… Continue Reading design-patterns-series
Integrating Spring with AWS Kinesis 1. Introduction Kinesis is a tool for collecting, processing, and analyzing data streams in real-time, developed at Amazon. One of its main advantages is that it helps with the development of event-driven applications. In this tutorial, we’ll explore a few libraries that enable our Spring… Continue Reading spring-aws-kinesis
The Spring TestExecutionListener 1. Overview Typically, we use the JUnit annotations like @BeforeEach, @AfterEach, @BeforeAll, and @AfterAll, to orchestrate tests’ lifecycle, but sometimes that’s not enough — especially when we’re working with the Spring framework. This is where Spring TestExecutionListener comes in handy. In this tutorial, we’ll see what the… Continue Reading spring-testexecutionlistener
Excluding URLs for a Filter in a Spring Web Application 1. Overview Most web applications have a use-case of performing operations like request logging, validation, or authentication. And, what’s more, such tasks are usually shared across a set of HTTP endpoints. The good news is that the Spring web framework… Continue Reading spring-exclude-filter
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Mocking a WebClient in Spring 1. Overview These days, we expect to call REST APIs in most of our services. Spring provides a few options for building a REST client, and WebClient is recommended. In this quick tutorial, we will look at how to unit test services that use WebClient… Continue Reading spring-mocking-webclient
Documenting a Spring REST API Using OpenAPI 3.0 1. Overview Documentation is an essential part of building REST APIs. In this tutorial, we’ll take a look at SpringDoc — a tool that simplifies the generation and maintenance of API docs, based on the OpenAPI 3 specification, for Spring Boot 1.x… Continue Reading spring-rest-openapi-documentation
Spring Validation Message Interpolation 1. Introduction Message interpolation is the process used for creating error messages for Java bean validation constraints. For example, we can see the messages by providing a null value for a field annotated with the javax.validation.constraints.NotNull annotation. In this tutorial, we’ll learn how to use the… Continue Reading spring-validation-message-interpolation
A Quick Guide to @DirtiesContext 1. Overview In this quick tutorial, we’ll learn about the @DirtiesContext annotation. We’ll also show a standard way to use the annotation for testing. 2. @DirtiesContext @DirtiesContext is a Spring testing annotation. It indicates the associated test or class modifies the ApplicationContext. It tells the testing… Continue Reading spring-dirtiescontext
A Collection of Spring Tutorials Persistence REST Security Series Spring Hibernate JPA I started the REST Security project on GitHub to explore writing an elegant REST Services with the latest and greatest Spring had to offer. That was Spring 3.1 and now Spring 3.2, moving towards Spring 4.0 and 4.1.… Continue Reading this-is-not-your-fathers-spring-a-learning-project
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