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Java ‘Hello World’ Example 1. Overview Java is a general-purpose programming language that focuses on the WORA (Write Once, Run Anywhere) principle. It runs on a JVM (Java Virtual Machine) that is in charge of abstracting the underlying OS, allowing Java programs to run almost everywhere, from application servers to… Continue Reading java-hello-world

Dynamic Proxies in Java 1. Introduction This article is about Java’s dynamic proxies – which is one of the primary proxy mechanisms available to us in the language. Simply put, proxies are fronts or wrappers that pass function invocation through their own facilities (usually onto real methods) – potentially adding… Continue Reading java-dynamic-proxies

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 their content. 2. Maven Dependencies To begin, we’ll need to add… Continue Reading apache-poi-slideshow

Java Localization – Formatting Messages 1. Introduction In this tutorial, we’ll consider how we can localize and format messages based on Locale. We’ll use both Java’s MessageFormat and the third-party library, ICU. 2. Localization Use Case When our application acquires a wide audience of users from all over the world, we… Continue Reading java-localization-messages-formatting

How to Filter a Collection in Java 1. Overview In this short tutorial, we’ll have a look at different ways of filtering a Collection in Java – that is, finding all the items that meet a certain condition. This is a fundamental task that is present in practically any Java application. For… Continue Reading java-collection-filtering

Working with Network Interfaces in Java 1. Overview In this article, we’ll focus on network interfaces and how to access them programmatically in Java. Simply put, a network interface is the point of interconnection between a device and any of its network connections. In everyday language, we refer to them… Continue Reading java-network-interfaces