John Thompson

Spring can automatically detect the relationships between various beans. Learn how to do this using the XML-based autowiring functionality.

Updated May 16, 2022

Learn how to use Project Lombok when adopting dependency injection using the Spring Framework.

December 19, 2019

Check out this post to learn more about the Spring bean lifecycle.

September 19, 2019

Learn more about using Aware interfaces to access Spring bean lifecycle events.

August 30, 2019

Learn how to use the ResourceLoader in your Spring apps.

August 29, 2019

Here's the lowdown on just about every Spring Framework annotation, including Core, Spring Cloud, Spring MVC, Spring REST, and Spring Boot.

Updated August 7, 2019

In this post, I'll explain how to define contracts at the service level using OpenAPI and Spring Cloud Contract.

April 19, 2019

Apache Maven remains one of the most popular dependency managers in the world of Java.

December 7, 2018

You've made the switch to JUnit 5 and you couldn't be happier. Or could you?

November 21, 2018

Want to learn more about converting a list to an array in Java? Check out this tutorial to learn more using the Apache Commons Lang and Guava.

August 1, 2018

See Java enums in action and learn their best practices

April 27, 2018

In this post, I'll share a tip on how to configure Hibernate and Spring Data JPA to log executed SQL statements and used bind parameters.

April 24, 2018

Let's dive into JAXB and how to use it to help for marshalling and unmarshalling objects to and from XML in Java.

February 11, 2018

Take a look at how a Jackson mix-in class or interface, as well as some annotations, can help you with (de)serialization when you don't have source code access to POJOs.

January 12, 2018

In this final series post about Jackson annotations, let's look at some general use annotations that are handy to have at the ready.

December 26, 2017

Need some randomness in your numbers? Check out a few different techniques you can avail yourself of to create random (or mostly random) numbers in Java.

December 26, 2017

As we continue our journey through Jackson annotations, let's see what you can use to help control deserialization of JSON into POJOs.

Updated December 25, 2017

Here's what you need to know about component scanning in spring, including setup and configuration as well as tips for filtering.

December 18, 2017

As we continue our journey through Jackson annotations, let's see what you can use in your POJOs to serialize Java objects to JSON.

Updated December 14, 2017

This introductory post will cover the Jackson annotations you should keep in mind when you need to control both deserialization and serialization between POJOs and JSON.

December 13, 2017

As often as Springs @RequestMapping annotation is, few recognize its versatility. Here, we see that on display when used to map Spring MVC controller methods.

September 10, 2017

With the rise in popularity of NoSQL databases, MongoDB has rapidly gained popularity. See reactive programming features in Spring Framework 5 and Spring Data MongoDB.

August 9, 2017

In this post, I discuss how to use embedded MongoDB in a Spring Boot application. This is all you need to do to start using Embedded MongoDB in a Spring Boot application.

August 2, 2017

In this post we take an in-depth look at Reactive programming and streams in Java. With all the hype surrounding reactive systems, this post is worth the read.

July 15, 2017

Spring 5 is coming and it's packed with new, shiny features. Whether your brain is fully reactive or you love functional programming in Kotlin, you won't be disappointed!

July 4, 2017

Spring Boot and Swagger 2 play together very well. Just add the dependencies, one configuration file, and a bunch of annotations, and you're ready to go!

March 6, 2017

If you're loading your Spring context for every test, you have integration tests, not unit tests. These are slow! See, how to deal with the problem using Mockito.

February 28, 2017

Accessing and configuring your MS SQL Server instance is pretty simple if you're using Spring Boot. After a bit of legwork, Spring fills in the defaults for you.

February 24, 2017

If you’re looking to load your full app configuration and use MockMVC, you should consider @SpringBootTest combined with @AutoConfigureMockMvc rather than @WebMvcTest.

December 16, 2016

A brilliant from-the-start introduction to using Spring Boot on Docker. This article even takes you through what Docker is so you've no excuse not to give it a whirl.

June 9, 2016