How-Tos

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Learn Java from the ground up

If you're new to Java then you've come to the right place. Get an overview of the Java platform, then code your first application using Java 12 and the new Java Shell

JavaWorld > Persistence [series] > data / data center / database / server

Java persistence with JPA and Hibernate, Part 1: Entities and relationships

Get started modeling entities and relationships for Java data persistence, using an example application based on Java 8 with Hibernate 5.3.6

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Java XML and JSON: Document processing for Java SE, Part 2: JSON-B

Use the Java API for JSON Binding (JSON-B) to serialize and deserialize Java objects, arrays, and collections in Java SE

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Java XML and JSON: Document processing for Java SE, Part 1: SAXON and Jackson

Learn how to transform and convert XML and JSON documents with SAXON and Jackson

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How to create apps that work together across Windows, iOS, and Android

Project Rome SDKs arrive for iOS and Android, so your apps can now take advantage of Microsoft’s cross-platform technologies

JavaWorld > Android Studio for Beginners [movile java package] > Part 4: Debug + Extend

Android Studio for beginners, Part 4: Debugging tools and productivity plugins

Use built-in tools and plugins to improve code quality and boost productivity in Android Studio

JavaWorld > Android Studio for Beginners [movile java package] > Part 3: Build + Test

Android Studio for beginners, Part 3: Build and run the app

Build your app with Gradle, then run it with the Android device emulator. This update includes troubleshooting advice for the Android device emulator

JavaWorld > Android Studio for Beginners [movile java package] > Part 2: Code

Android Studio for beginners, Part 2: Explore and code the app

Write your first animated Android app with Android Studio's Project editor

JavaWorld > Android Studio for Beginners [movile java package] > Part 1: Install + Setup

Android Studio for beginners, Part 1: Installation and setup

If you're new to Android Studio, start here: Part 1 walks through installing Android Studio 3.x and launching your first Android project

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How to write agile user stories: 7 guidelines

Beyond the basics: how to provide agile user stories more definition and structure to ensure there is a shared understanding of the intent and underlying requirements

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5 principles to becoming a collaborative agile devops team

Agile and devops are not just practices and technologies—they are designed to change how people in IT work together

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How JavaScript promises work

Learn why JavaScript promises are like a gift box and get up to speed with JavaScript promise syntax

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SQL tutorial: Learn SQL on MariaDB

Follow this step-by-step guide to install MariaDB, load data, connect to a database, and execute SQL queries including table joins

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Tutorial: Spark application architecture and clusters

Learn how Spark components work together and how Spark applications run on standalone and YARN clusters

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Write a purely functional Bubble Sort application

Improve a classic, object-oriented sort application using Java's functional programming capabilities

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Functional programming for Java developers, Part 2

Rewrite object-oriented code using functional techniques. Get started with lambdas, method references, functional interfaces, and the Streams API in Java

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How to use Knime for data science

Free, open-source Knime allows you to visually assemble data processing “nodes” into machine learning, deep learning, and other analytics workflows

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Functional programming for Java developers, Part 1

Optimize your Java code with these five functional programming techniques

big data messaging system / information architecture / mosaic infrastructure

Built for realtime: Big data messaging with Apache Kafka, Part 2

Learn how to use Apache Kafka's partitions, message offsets, and consumer groups to distribute load and scale your applications horizontally, handling up to millions of messages per day

big data messaging system / information architecture / mosaic infrastructure

Built for realtime: Big data messaging with Apache Kafka, Part 1

Apache Kafka scales horizontally and offers much higher throughput than some traditional messaging systems. Get started with installation, then build your first Kafka messaging system

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