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Intro to Code Quality Rules with FindBugs and PMD 1. Overview In this article, we will be highlighting some of the important rules featured in code analysis tools like FindBugs, PMD and CheckStyle. 2. Cyclomatic Complexity ==== 2.1. What Is Cyclomatic Complexity? Code complexity is important, yet difficult metric to… Continue Reading code-quality-metrics
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Working with Kotlin and JPA 1. Introduction One of Kotlin’s characteristics is the interoperability with Java libraries, and JPA is certainly one of these. In this tutorial, we’ll explore how to use Kotlin Data Classes as JPA entities. 2. Dependencies To keep things simple, we’ll use Hibernate as our JPA… Continue Reading kotlin-jpa
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Java Primitives versus Objects 1. Overview In this tutorial, we show the pros and cons of using Java primitive types and their wrapped counterparts. 2. Java Type System Java has a two-fold type system consisting of primitives such as int, boolean and reference types such as Integer, Boolean. Every primitive type… Continue Reading java-primitives-vs-objects
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The Basics of JUnit 5 – A Preview Testing JUnit JUnit 5 1. Overview JUnit is one of the most popular unit testing frameworks for Java, so it is a big deal in the developer community when new major versions come out. An alpha version of JUnit 5 was released… Continue Reading junit-5-preview
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Remove All Occurrences of a Specific Value from a List 1. Introduction In Java, it’s straightforward to remove a specific value from a List using List.remove(). However, efficiently removing all occurrences of a value is much harder. In this tutorial, we’ll see multiple solutions to this problem, describing the pros… Continue Reading java-remove-value-from-list
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RxJava StringObservable 1. Introduction to StringObservable Working with String sequences in RxJava may be challenging; luckily RxJavaString provides us with all necessary utilities. In this article, we’ll cover StringObservable which contains some helpful String operators. Therefore, before getting started, it’s advised to have a look at the Introduction to RxJava… Continue Reading rxjava-string
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Verbose Garbage Collection in Java 1. Overview In this tutorial, we’ll take a look at how to turn on verbose garbage collection in a Java application. We’ll begin by introducing what verbose garbage collection is and why it can be useful. Next, we’ll look at several different examples and we’ll… Continue Reading java-verbose-gc
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Introduction to Quartz 1. Overview Quartz is an open source job-scheduling framework written entirely in Java and designed for use in both J2SE and J2EE applications. It offers great flexibility without sacrificing simplicity. You can create complex schedules for executing any job. Examples are e.g. tasks that run daily, every… Continue Reading quartz
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Apache Commons Collections BidiMap 1. Overview In this short article, we’ll be looking at an interesting data structure in the Apache Commons Collections library – the BidiMap. The BidiMap adds a possibility of looking up the key using the corresponding value on top of the standard Map interface. 2. Dependencies… Continue Reading commons-collections-bidi-map
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Internationalization and Localization in Java 8 1. Overview Internationalization is a process of preparing an application to support various linguistic, regional, cultural or political-specific data. It is an essential aspect of any modern multi-language application. For further reading, we should know that there’s a very popular abbreviation (probably more popular than… Continue Reading java-8-localization
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