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Spring REST and HAL Browser 1. Overview In this tutorial, we’ll be discussing what HAL is and why it’s useful, before introducing the HAL browser. We’ll then use Spring to build a simple REST API with a few interesting endpoints and populate our database with some test data. Finally, using… Continue Reading spring-rest-hal
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Guide to Stream.reduce() 1. Overview The Stream API provides a rich repertoire of intermediate, reduction, and terminal functions, which also support parallelization. More specifically, reduction stream operations allow us to produce one single result from a sequence of elements, by applying repeatedly a combining operation to the elements in the… Continue Reading java-stream-reduce
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Improved Java Logging with Mapped Diagnostic Context (MDC) 1. Overview In this article, we will explore the use of Mapped Diagnostic Context (MDC) to improve the application logging. The basic idea of Mapped Diagnostic Context is to provide a way to enrich log messages with pieces of information that could… Continue Reading mdc-in-log4j-2-logback
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The DAO with Spring and Hibernate 1. Overview This article will show how to implement the DAO with Spring and Hibernate. For the core Hibernate configuration, check out the previous Hibernate 5 with Spring article. 2. No More Spring Templates Starting Spring 3.0 and Hibernate 3.0.1, the Spring HibernateTemplate is… Continue Reading persistence-layer-with-spring-and-hibernate
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Guide to @EnableConfigurationProperties 1. Introduction In this quick tutorial, we’ll show how to use an @EnableConfigurationProperties annotation with @ConfigurationProperties annotated classes. 2. Purpose of @EnableConfigurationProperties Annotation @EnableConfigurationProperties annotation is strictly connected to @ConfiguratonProperties. It enables support for @ConfigurationProperties annotated classes in our application. However, it’s worth to point out that… Continue Reading spring-enable-config-properties
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Java Weekly, Issue 259 Here we go… 1. Spring and Java ===== >> Reactive Programming and Relational Databases [spring.io] A brief look at why R2DBC may be winning the race to integrate the Reactive Programming model with RDBMS stacks. Very exciting. >> What is Java object equals contract? [dolszewski.com] A quick write-up… Continue Reading java-weekly-259
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Guide to the java.util.Arrays Class 1. Introduction In this tutorial, we’ll take a look at java.util.Arrays, a utility class that has been part of Java since Java 1.2. Using Arrays, we can create, compare, sort, search, stream, and transform arrays. 2. Creating Let’s take a look at some of the ways we… Continue Reading java-util-arrays
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Guide to Spring Data REST Validators 1. Overview This article covers a basic introduction to Spring Data REST Validators. If you need to first go over the basics of Spring Data REST, definitely visit this article to brush up on the basics. Simply put, with Spring Data REST, we can… Continue Reading spring-data-rest-validators
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Injecting Mockito Mocks into Spring Beans 1. Overview This article will show how to use dependency injection to insert Mockito mocks into Spring Beans for unit testing. In real-world applications, where components often depend on accessing external systems, it is important to provide proper test isolation so that we can… Continue Reading injecting-mocks-in-spring
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Determine File Creation Date in Java 1. Overview JDK 7 introduced the ability to get a file’s creation date. In this tutorial, we’ll learn how we can access it through java.nio. 2. Files.getAttribute One way to get a file’s creation date is to use the method Files.getAttribute with a given… Continue Reading java-file-creation-date
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