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Testing with Selenium/WebDriver and the Page Object Pattern 1. Introduction In this article, we’re going to build on the previous writeup and continue to improve our Selenium/WebDriver testing by introducing the Page Object pattern. 2. Adding Selenium Let’s add a new dependency to our project to write simpler, more readable… Continue Reading selenium-webdriver-page-object

Introduction to the Null Object Pattern 1. Overview In this quick tutorial, we’ll have a look at the Null Object Pattern, a special case of the Strategy Pattern. We’ll describe its purpose and when we should actually consider using it. As usual, we’ll also provide a simple code example. 2.… Continue Reading java-null-object-pattern

Introduction to AutoFactory 1. Introduction In this tutorial, we’ll give a brief introduction to AutoFactory, from by Google. This is a source-level code generator that helps generate factories. 2. Maven Setup Before we begin, let’s add the following dependency to the pom.xml: <dependency> <groupId>com.google.auto.factory</groupId> <artifactId>auto-factory</artifactId> <version>1.0-beta5</version> </dependency> The latest version… Continue Reading autofactory

Visitor Design Pattern in Java 1. Overview In this tutorial, we’ll introduce one of the behavioral GoF design patterns – the Visitor. First, we’ll explain its purpose and the problem it tries to solve. Next, we’ll have a look at Visitor’s UML diagram and implementation of the practical example. 2.… Continue Reading java-visitor-pattern

Automatic Generation of the Builder Pattern with FreeBuilder [[builder pattern]] === 1. Overview [[builder pattern]]In this tutorial, we’ll use the FreeBuilder library to generate builder classes in Java. [[design patterns]] === 2. Builder Design Pattern [[design patterns]]Builder is one of the most widely used Creation Design Patterns in object-oriented languages.… Continue Reading java-builder-pattern-freebuilder

Spring Cloud Series – The Gateway Pattern 1. Overview So far, in our cloud application, we’ve used the Gateway Pattern to support two main features. First, we insulated our clients from each service, eliminating the need for cross-origin support. Next, we implemented locating instances of services using Eureka. In this… Continue Reading spring-cloud-gateway-pattern