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Java Weekly, Issue 285 Here we go… 1. Spring and Java ===== >> How to Write a Simple, yet Extensible API [blog.jooq.org] While writing a simple API may be difficult, making it extensible in a simple way is not. >> Testing Your Database Migrations With Flyway and Testcontainers [dev.to] A… Continue Reading java-weekly-285
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Spring Core Annotations 1. Overview We can leverage the capabilities of Spring DI engine using the annotations in the org.springframework.beans.factory.annotation and org.springframework.context.annotation packages. We often call these “Spring core annotations” and we’ll review them in this tutorial. 2. DI-Related Annotations ==== 2.1. @Autowired We can use the @Autowired to mark a dependency… Continue Reading spring-core-annotations
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Implementing Custom Operators in RxJava 1. Overview In this quick tutorial, we’ll show how to write a custom operator using RxJava. We’ll discuss how to build this simple operator, as well as a transformer – both as a class or as a simple function. 2. Maven Configuration First, we need… Continue Reading rxjava-custom-operators
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Finding Elements in Collections in Groovy 1. Introduction Groovy provides a substantial number of methods enhancing Java’s core capabilities. In this tutorial, we’ll show how Groovy does this when checking for an element and finding it in several types of collections. 2. Test if Element is Present First, we’ll focus… Continue Reading groovy-collections-find-elements
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Intro to JHipster 1. Introduction This article will give you a quick overview of JHipster, show you how to create a simple monolithic application and custom entities using command line tools. We will also examine the generated code during every step, and also cover the build commands and automated tests.… Continue Reading jhipster
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Introduction to SPF4J 1. Overview Performance testing is an activity often pushed towards the end stages of the software development cycle. We usually rely on Java profilers to help troubleshoot performance issues. In this tutorial, we’ll go through the Simple Performance Framework for Java (SPF4J). It provides us APIs that… Continue Reading spf4j
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Apache Ignite with Spring Data 1. Overview In this quick guide, we’re going to focus on how to integrate the Spring Data API with the Apache Ignite platform. To learn about Apache Ignite check out our previous guide. 2. Maven Setup In addition to the existing dependencies, we have to… Continue Reading apache-ignite-spring-data
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Default Column Values in JPA 1. Introduction In this tutorial, we’ll look into default column values in JPA. We’ll learn how to set them in as a default property in the entity as well as directly in the SQL table definition. 2. While Creating an Entity The first way to… Continue Reading jpa-default-column-values
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Java ‘public’ Access Modifier 1. Overview In this quick article, we’ll cover the public modifier in-depth, and we’ll discuss when and how to use it with classes and members. Additionally, we’ll illustrate the drawbacks of using public data fields. For a general overview of access modifiers, definitely have a look… Continue Reading java-public-keyword
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Spring Security Login Page with Angular 1. Overview In this tutorial, we’ll be creating a login page using Spring Security with: AngularJS Angular 2, 4, 5, and 6 The example application which we’re going to discuss here consists of a client application that communicates with the REST service, secured with… Continue Reading spring-security-login-angular
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