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The SpringJUnitConfig and SpringJUnitWebConfig Annotations in Spring 5
1. Introduction In this quick article, we’ll take a look at the new @SpringJUnitConfig and @SpringJUnitWebConfig annotations available in Spring 5. These annotations are a composition of JUnit 5 and...
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Comparator and Comparable in Java
1. Introduction Comparisons in Java are quite easy – until they’re not. When working with custom types, or trying to compare objects that aren’t directly comparable, we need to make use of a...
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Introduction to the JDBC RowSet Interface in Java
1. Overview In this article, we’re reviewing the JDBC RowSet interface. A JDBC RowSet object holds tabular data in a style that makes it more adaptable and simpler to use than a result set. Oracle has...
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Nested Classes in Java
1. Introduction This tutorial is a quick and to-the-point introduction to nested classes in the Java language. Simply put, Java allows us to define classes inside other classes. Nested classes enable...
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Writing Custom Gradle Plugins
1. Introduction Gradle is a very popular build tool, which is often appreciated for the highly-customizable build process. Today we’re going to show how to create custom Gradle plugins, that will...
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A Guide to Java Loops
1. Overview In this article, we’ll look at a core aspect of the Java language – executing a statement or a group of statements repeatedly – using loops. 2. Intro to Loops In programming languages,...
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Creating a MS PowerPoint Presentation in Java
1. Introduction In this article, we’ll see how we can create a presentation using Apache POI. This library gives us a possibility to create PowerPoint presentations, read existing ones, and to alter...
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Varargs in Java
1. Introduction Varargs were introduced in Java 5 and provide a short-hand for methods that support an arbitrary number of parameters of one type. In this article, we’ll see how we can use this core...
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A Quick Guide to Spring Cloud Consul
1. Overview The Spring Cloud Consul project provides easy integration with Consul for Spring Boot applications. Consul is a tool that provides components for resolving some of the most common...
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Introduction to Spring Security ACL
1. Introduction Access Control List (ACL) is a list of permissions attached to an object. An ACL specifies which identities are granted which operations on a given object. Spring Security Access...
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Java Weekly, Issue 206
Here we go… 1. Spring and Java >> Make your life easier with Kotlin stdlib [blog.frankel.ch] Kotlin has some small germs in its standard library. >> Collections.checkedCollection()...
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Getting Started With Mule ESB
1. Overview Mule ESB is a lightweight Java-based Enterprise Service Bus. It allows developers to connect multiple applications together by exchanging data in different formats. It carries data in a...
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Extension Methods in Kotlin
1. Introduction Kotlin introduces the concept of Extension Methods – which are a handy way of extending existing classes with a new functionality without using inheritance or any forms of the...
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Spring Cloud Connectors and Heroku
1. Overview In this article, we’re going to cover setting up a Spring Boot application on Heroku using Spring Cloud Connectors. Heroku is a service that provides hosting for web services. Also, they...
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A Guide to HashSet in Java
1. Overview In this article, we’ll dive into HashSet. It’s one of the most popular Set implementations as well as an integral part of the Java Collections Framework. 2. Intro to HashSet HashSet is one...
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Introduction to Hibernate Search
1. Overview In this article, we’ll discuss the basics of Hibernate Search, how to configure it, and we’ll implement some simple queries. 2. Basics of Hibernate Search Whenever we have to implement...
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Send Operating System Data into Elastic Stack (ELK Stack)
1. Overview In this quick tutorial, we’ll discuss how to send OS-level metrics into Elastic Stack. As a reference, we’re going to be using an Ubuntu server here. We’ll use Metricbeat to collect data...
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Introduction to Hibernate Spatial
1. Introduction In this article, we’ll have a look a the spatial extension of Hibernate, hibernate-spatial. Starting with version 5, Hibernate Spatial provides a standard interface for working with...
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Spring and Apache FileUpload
1. Overview The Apache Commons File Upload Library helps us upload large files over the HTTP protocol using the multipart/form-data content type. In this quick tutorial, we’re going to take a look at...
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Java Weekly, Issue 207
Lots of interesting writeups on Java 9 this week. Here we go… 1. Spring and Java >> Exploring the jlink plug-in API in Java 9 [in.relation.to] Jlink allows us to create fully self-contained...
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