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Broadcasting and Multicasting in Java 1. Introduction In this article, we describe how one-to-all (Broadcast) and one-to-many (Multicast) communications can be handled in Java. The broadcast and multicast concepts outlined in this article are based on the UDP protocol. We start with a quick recap of datagrams and broadcasting and… Continue Reading java-broadcast-multicast
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Creating a Java Compiler Plugin 1. Overview Java 8 provides an API for creating Javac plugins. Unfortunately, it’s hard to find good documentation for it. In this article, we’re going to show the whole process of creating a compiler extension which adds custom code to *.class files. 2. Setup First,… Continue Reading java-build-compiler-plugin
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How to Detect the OS Using Java 1. Introduction There are a couple of ways to figure out the OS on which our code is running on. In this brief article, we’re going to see how to focus on doing OS detection in Java. 2. Implementation One way is to… Continue Reading java-detect-os
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Convert Latitude and Longitude to a 2D Point in Java 1. Overview When implementing applications that use maps, we will typically run into the problem of coordinate conversion. Most of the time, we need to convert latitude and longitude to a 2D point to display. Fortunately, to solve this problem,… Continue Reading java-convert-latitude-longitude
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Java System.getProperty vs System.getenv DevOps Java 1. Introduction The package java.lang is automatically imported when in a Java application. This package contains many commonly used classes from NullPointerException to Object, Math, and String. The java.lang.System class is a final class, meaning that we cannot subclass it, therefore all methods are… Continue Reading java-system-get-property-vs-system-getenv
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Breaking Out of Nested Loops 1. Overview In this tutorial, we’ll create some examples to show different ways to use break within a loop. Next, we’ll also see how to terminate a loop without using break at all. 2. The Problem Nested loops are very useful, for instance, to search in a… Continue Reading java-breaking-out-nested-loop
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Java Valhalla Project 1. Overview In this article, we’ll look at Project Valhalla – the historical reasons for it, the current state of development and what it brings to the table for the day-to-day Java developer once it’s released. 2. Motivation and Reasons for the Valhalla Project In one of his talks,… Continue Reading java-valhalla-project
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LongAdder and LongAccumulator in Java 1. Overview In this article, we’ll be looking at two constructs from the java.util.concurrent package: LongAdder and LongAccumulator. Both are created to be very efficient in the multi-threaded environment and both leverage very clever tactics to be lock-free and still remain thread-safe. 2. LongAdder Let’s… Continue Reading java-longadder-and-longaccumulator
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Monitoring Java Applications with Flight Recorder 1. Overview In this tutorial, we’ll examine Java Flight Recorder, its concepts, its basic commands, and how to use it. 2. Java Monitoring Utilities Java is not just a programming language but a very rich ecosystem with a lot of tools. The JDK contains… Continue Reading java-flight-recorder-monitoring
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An Intro to the Java Debug Interface (JDI) 1. Overview We may wonder how widely recognized IDEs like IntelliJ IDEA and Eclipse implement debugging features. These tools rely heavily on the Java Platform Debugger Architecture (JPDA). In this introductory article, we’ll discuss the Java Debug Interface API (JDI) available under… Continue Reading java-debug-interface
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