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Java Web Weekly 42 At the very beginning of last year, I decided to track my reading habits and share the best stuff here, on Baeldung. Haven’t missed a review since. Here we go… 1. Spring and Java ===== >> React.js and Spring Data REST: Part 4 – Events [spring.io]… Continue Reading 2015-week-review-42
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Guide to FastUtil 1. Introduction In this tutorial, we’ll be looking at the FastUtil library. First, we’ll code some examples of its type-specific collections. Then, we’ll analyze the performance that gives FastUtil its name. Finally, let’s take a peek at FastUtil‘s BigArray utilities. 2. Features The FastUtil Java library seeks to extend the Java… Continue Reading fastutil
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Validating RequestParams and PathVariables in Spring 1. Introduction In this tutorial, we’ll take a look at how to validate HTTP request parameters and path variables in Spring MVC. Specifically, we’ll validate String and Number parameters with JSR 303 annotations. To explore validation of other types, refer to our tutorials about Java Bean Validation and method constraints or… Continue Reading spring-validate-requestparam-pathvariable
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A Guide to Stored Procedures with JPA 1. Introduction In this quick tutorial we’ll explore the use of Stored Procedures within the Java Persistence API (JPA). 2. Project Setup ==== 2.1. Maven Setup We first need to define the following dependencies in our pom.xml: javax.javaee-api – as it includes the… Continue Reading jpa-stored-procedures
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Introduction to Kotlin Coroutines 1. Overview In this article, we’ll be looking at coroutines from the Kotlin language. Simply put, coroutines allow us to create asynchronous programs in a very fluent way, and they’re based on the concept of Continuation-passing style programming. The Kotlin language gives us basic constructs but… Continue Reading kotlin-coroutines
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Java Weekly, Issue 182 Lots of interesting writeups on Java 9 this week. Here we go… 1. Spring and Java ===== >> Kotlin and Spring: Working with JPA and data classes [codecentric.de] Kotlin makes it possible to create entities using data classes without Java-like boilerplate. However, there are a few… Continue Reading java-weekly-182
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Intro to Inversion of Control and Dependency Injection with Spring 1. Overview In this article, we’ll introduce the concepts of IoC (Inversion of Control) and DI (Dependency Injection), and we’ll then take a look at how these are implemented in the Spring framework. Further reading: Wiring in Spring: @Autowired, @Resource… Continue Reading inversion-control-and-dependency-injection-in-spring
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ClassNotFoundException vs NoClassDefFoundError 1. Introduction Both ClassNotFoundException and NoClassDefFoundError occur when the JVM can not find a requested class on the classpath. Although they look familiar, there are some core differences between these two. In this tutorial, we’ll discuss some of the reasons for their occurrences and their solutions. 2.… Continue Reading java-classnotfoundexception-and-noclassdeffounderror
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Split a String in Java 1. Introduction Splitting Strings is a very frequent operation; this quick tutorial is focused on some of the API we can use to do this simply in Java. 2. String.split() Let’s start with the core library – the String class itself offers a split() method… Continue Reading java-split-string
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Java CyclicBarrier vs CountDownLatch 1. Introduction In this tutorial, we’ll compare CyclicBarrier and CountDownLatch and try to understand the similarities and differences between the two. 2. What Are These? When it comes to concurrency, it can be challenging to conceptualize what each is intended to accomplish. First and foremost, both CountDownLatch and CyclicBarrier… Continue Reading java-cyclicbarrier-countdownlatch
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