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Unit 4: Getting started with the Java language
Learn the structure, syntax, and programming paradigm of the Java platform and language. Start by mastering the essentials of object-oriented programming on the Java platform, and progress incrementally to the more-sophisticated syntax and libraries that you need to develop complex, real-world Java applications.
Also available in: English  
Tutorial 14 Sep 2016
Intro to Java programming
Learn the structure, syntax, and programming paradigm of the Java platform and language. Start by mastering the essentials of object-oriented programming on the Java platform, and progress incrementally to the more-sophisticated syntax and libraries that you need in order to develop complex, real-world Java applications.
Tutorial 14 Sep 2016
Unit 5: Your first Java class
Learn the structure, syntax, and programming paradigm of the Java platform and language. Start by mastering the essentials of object-oriented programming on the Java platform, and progress incrementally to the more-sophisticated syntax and libraries that you need to develop complex, real-world Java applications.
Tutorial 14 Sep 2016
Unit 12: Writing good Java code
Learn the structure, syntax, and programming paradigm of the Java platform and language. Start by mastering the essentials of object-oriented programming on the Java platform, and progress incrementally to the more-sophisticated syntax and libraries that you need to develop complex, real-world Java applications.
Tutorial 14 Sep 2016
Unit 7: Strings and operators
Learn the structure, syntax, and programming paradigm of the Java platform and language. Start by mastering the essentials of object-oriented programming on the Java platform, and progress incrementally to the more-sophisticated syntax and libraries that you need to develop complex, real-world Java applications.
Tutorial 14 Sep 2016
Unit 19: Regular expressions
Learn the structure, syntax, and programming paradigm of the Java platform and language. Start by mastering the essentials of object-oriented programming on the Java platform, and progress incrementally to the more-sophisticated syntax and libraries that you need to develop complex, real-world Java applications.
Also available in: English  
Tutorial 14 Sep 2016
Unit 2: Setting up your Java development environment
Learn the structure, syntax, and programming paradigm of the Java platform and language. Start by mastering the essentials of object-oriented programming on the Java platform, and progress incrementally to the more-sophisticated syntax and libraries that you need to develop complex, real-world Java applications.
Tutorial 14 Sep 2016
Unit 3: Object-oriented programming concepts and principles
Learn the structure, syntax, and programming paradigm of the Java platform and language. Start by mastering the essentials of object-oriented programming on the Java platform, and progress incrementally to the more-sophisticated syntax and libraries that you need to develop complex, real-world Java applications.
Tutorial 14 Sep 2016
Unit 13: Next steps with objects
Learn the structure, syntax, and programming paradigm of the Java platform and language. Start by mastering the essentials of object-oriented programming on the Java platform, and progress incrementally to the more-sophisticated syntax and libraries that you need to develop complex, real-world Java applications.
Tutorial 14 Sep 2016
Unit 18: Nested classes
Learn the structure, syntax, and programming paradigm of the Java platform and language. Start by mastering the essentials of object-oriented programming on the Java platform, and progress incrementally to the more-sophisticated syntax and libraries that you need to develop complex, real-world Java applications.
Also available in: English  
Tutorial 14 Sep 2016
Unit 9: Loops
Learn the structure, syntax, and programming paradigm of the Java platform and language. Start by mastering the essentials of object-oriented programming on the Java platform, and progress incrementally to the more-sophisticated syntax and libraries that you need to develop complex, real-world Java applications.
Also available in: English  
Tutorial 14 Sep 2016
Unit 22: Java serialization
Learn the structure, syntax, and programming paradigm of the Java platform and language. Start by mastering the essentials of object-oriented programming on the Java platform, and progress incrementally to the more-sophisticated syntax and libraries that you need to develop complex, real-world Java applications.
Also available in: English  
Tutorial 14 Sep 2016
Unit 1: Java platform overview
Learn the structure, syntax, and programming paradigm of the Java platform and language. Start by mastering the essentials of object-oriented programming on the Java platform, and progress incrementally to the more-sophisticated syntax and libraries that you need to develop complex, real-world Java applications.
Tutorial 14 Sep 2016
Unit 23: Java in the cloud
Learn the structure, syntax, and programming paradigm of the Java platform and language. Start by mastering the essentials of object-oriented programming on the Java platform, and progress incrementally to the more-sophisticated syntax and libraries that you need to develop complex, real-world Java applications.
Tutorial 14 Sep 2016
Unit 10: Java Collections
Learn the structure, syntax, and programming paradigm of the Java platform and language. Start by mastering the essentials of object-oriented programming on the Java platform, and progress incrementally to the more-sophisticated syntax and libraries that you need to develop complex, real-world Java applications.
Also available in: English  
Tutorial 14 Sep 2016
Unit 21: I/O
Learn the structure, syntax, and programming paradigm of the Java platform and language. Start by mastering the essentials of object-oriented programming on the Java platform, and progress incrementally to the more-sophisticated syntax and libraries that you need to develop complex, real-world Java applications.
Also available in: English  
Tutorial 14 Sep 2016
Unit 17: Interfaces
Learn the structure, syntax, and programming paradigm of the Java platform and language. Start by mastering the essentials of object-oriented programming on the Java platform, and progress incrementally to the more-sophisticated syntax and libraries that you need to develop complex, real-world Java applications.
Tutorial 14 Sep 2016
Unit 16: Inheritance
Learn the structure, syntax, and programming paradigm of the Java platform and language. Start by mastering the essentials of object-oriented programming on the Java platform, and progress incrementally to the more-sophisticated syntax and libraries that you need to develop complex, real-world Java applications.
Also available in: English  
Tutorial 14 Sep 2016
Unit 20: Generics
Learn the structure, syntax, and programming paradigm of the Java platform and language. Start by mastering the essentials of object-oriented programming on the Java platform, and progress incrementally to the more-sophisticated syntax and libraries that you need to develop complex, real-world Java applications.
Also available in: English  
Tutorial 14 Sep 2016
Unit 14: Exceptions
Learn the structure, syntax, and programming paradigm of the Java platform and language. Start by mastering the essentials of object-oriented programming on the Java platform, and progress incrementally to the more-sophisticated syntax and libraries that you need to develop complex, real-world Java applications.
Also available in: English  
Tutorial 14 Sep 2016
Unit 8: Conditional operators and control statements
Learn the structure, syntax, and programming paradigm of the Java platform and language. Start by mastering the essentials of object-oriented programming on the Java platform, and progress incrementally to the more-sophisticated syntax and libraries that you need to develop complex, real-world Java applications.
Tutorial 14 Sep 2016
Unit 15: Building Java applications
Learn the structure, syntax, and programming paradigm of the Java platform and language. Start by mastering the essentials of object-oriented programming on the Java platform, and progress incrementally to the more-sophisticated syntax and libraries that you need to develop complex, real-world Java applications.
Tutorial 14 Sep 2016
Unit 11: Archiving Java code
Learn the structure, syntax, and programming paradigm of the Java platform and language. Start by mastering the essentials of object-oriented programming on the Java platform, and progress incrementally to the more-sophisticated syntax and libraries that you need to develop complex, real-world Java applications.
Tutorial 14 Sep 2016
Unit 6: Adding behavior to a Java class
Learn the structure, syntax, and programming paradigm of the Java platform and language. Start by mastering the essentials of object-oriented programming on the Java platform, and progress incrementally to the more-sophisticated syntax and libraries that you need to develop complex, real-world Java applications.
Also available in: English  
Tutorial 14 Sep 2016
Revitalize your Java EE app with IBM Bluemix services
Migrate existing applications to IBM Bluemix services such as SQLDB, Session Cache, and Auto-Scaling. The sample application you will work with is CloudTrader, a new app created from a ten-year-old day trading application.
Also available in: Chinese   Russian   Japanese   Portuguese   Spanish  
Tutorial 08 Aug 2016
Java Streams, Part 4: From concurrent to parallel
This fourth installment of the Java Streams series identifies and explains factors that determine the effectiveness of parallel processing, putting them into historical and technical context. An understanding of these factors provides a foundation for making optimal use of the Streams library for parallel execution. (The next installment applies the principles outlined here directly to Streams.)
Articles 18 Jul 2016
Java Streams, Part 5: Parallel stream performance
This fifth and final installment of the Java Streams series continues the previous installment's discussion of factors that influence the effectiveness of parallel processing, and applies them to the Streams library. Find out why some stream pipelines parallelize better than others, and see how to analyze your own streams code for parallel performance.
Articles 18 Jul 2016
Java Streams, Part 1: An introduction to the java.util.stream library
Explore the Java Streams library, introduced in Java SE 8, in this series by Java Language Architect Brian Goetz. By taking advantage of the power of lambda expressions, the java.util.stream package makes it easy to run functional-style queries on collections, arrays, and other data sets.
Also available in: Chinese  
Articles 06 Jul 2016
Java Streams, Part 2: Aggregating with Streams
Explore the Java Streams library, introduced in Java SE 8, in this series by Java Language Architect Brian Goetz. By taking advantage of the power of lambda expressions, the java.util.stream package makes it easy to run functional-style queries on collections, arrays, and other data sets. In this installment, learn how to use the java.util.stream package to aggregate and summarize data efficiently.
Also available in: Chinese  
Articles 06 Jul 2016
Java Streams, Part 3: Streams under the hood
Explore the Java Streams library, introduced in Java SE 8, in this series by Java Language Architect Brian Goetz. By taking advantage of the power of lambda expressions, the java.util.stream package makes it easy to run functional-style queries on collections, arrays, and other data sets. In this installment, learn how to fine-tune your queries for maximum efficiency.
Also available in: Chinese  
Articles 06 Jul 2016
Achieve your API strategy with IBM API Connect
To deliver on your API strategy, you need to understand your key stakeholders, their needs, and how API Connect can help to meet those needs. In this article you learn about these essential elements of an API strategy. You see how IBM API Connect goes beyond the limits of an API management platform, allowing your organization to not only manage and secure its APIs, but to also create and run them. Finally, you see how quickly you can get started with API Connect.
Articles 06 Jun 2016
Editor's picks: Top five WebSphere Liberty tutorials
If there is one thing that IBM WebSphere Liberty gives you, it's the freedom, and flexibility, to dynamically create applications both on-premises and in the cloud. This article highlights the top five tutorials in developerWorks for WebSphere Liberty.
Articles 31 May 2016
Refactoring to microservices, Part 3: Roadmap to microservices adoption
Microservices are taking the development world by storm. In this 3-part series, "Refactoring to microservices," we'll cover why they matter, what factors to consider in planning your approach to microservices, the role of data factoring, and a step-by-step migration process. Part 3 lays out a roadmap for transforming your applications from a monolith to a set of microservices.
Articles 23 May 2016
Unlock the API economy value chain with IBM WebSphere Liberty and API Connect
Embrace the API economy by implementing the API economy value chain. In this article, you learn how to implement Java APIs and discover them by using WebSphere Liberty. You see how to import those APIs into IBM API Connect and publish them to a developer portal. By using this approach, app developers have a single location to find APIs, learn how to use them, and simplify integrating those APIs into their apps.
Also available in: Chinese  
Tutorial 20 May 2016
Refactoring to microservices, Part 2: What to consider when moving your data
In this 3-part series, learn why microservices matter, what factors to consider in planning your evolution to microservices, the role of data factoring, and a step-by-step migration process. Part 2 delves into data decisions, and shows examples where refactoring your data for a microservices-based approach is (and is not) the best idea.
Also available in: Chinese   Spanish  
Articles 04 May 2016
Extend Java apps to mobile and cloud
Tips, considerations, best practices, and encouragement for extending existing Java-based enterprise transaction systems and systems of record to mobile applications deployed in cloud environments.
Also available in: Chinese   Japanese  
Articles 04 May 2016
4 reasons why WebSphere Liberty and Bluemix ease the lift and shift of on-premises microservices to the cloud
In this article, Vijay Bhadriraju, IBM Senior Software Engineer, explains his experience in lifting and shifting on-premises Java microservices to Bluemix cloud. He also examines the lifecycle management benefits that these microservices can experience by running in Bluemix. This tutorial is geared to developers and IT personnel who are running microservices in their on-premises infrastructure and want to move them to the cloud.
Also available in: Chinese  
Articles 21 Apr 2016
Refactoring to microservices, Part 1: What to consider when migrating from a monolith
Microservices are taking the development world by storm. In this 3-part series, we'll cover why they matter, what factors to consider in planning your approach to microservices, the role of data factoring, and a step-by-step migration process. Part 1 introduces microservices and discusses considerations for refactoring your applications to take advantage of a microservices architecture.
Also available in: Chinese   Spanish  
Articles 13 Apr 2016
Such a deal: Jump-start your cloud projects with developerWorks Premium
For a modest investment, our new developerWorks Premium membership program can yield huge benefits for you in terms of time and (yes) money giving you access to powerful tools that support your cloud projects, a trove of learning resources to help you build your skills, discounts to industry events where you can expand and enhance your network, free certification testing, and more.
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Articles 29 Mar 2016
Use Elasticsearch in your Java applications
Elasticsearch is taking the full-text search world by storm by combining an easy-to-use REST API with automated cluster scaling. Get a hands-on introduction to using Elasticsearch from a command shell and from within a Java application.
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Articles 08 Mar 2016
Explore what's new in IBM Bluemix
In this updated demo, David Barnes shows how to start developing and deploying applications using the latest Bluemix runtimes and services, any way you want to do it: using the Cloud Foundry approach, using IBM Containers, or using OpenStack virtual machines.
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Articles 08 Mar 2016
Minecraft and Bluemix, Part 4: Integrating Watson into Minecraft on Bluemix
In this tutorial series, you'll learn how to use Docker, Eclipse, and Bluemix to develop, extend, and host your own Minecraft servers. Find out how to use Eclipse to build Minecraft plugins, test them locally using Docker, and use Bluemix to host your Docker containers on the Internet. You'll also harness the power of IBM Watson from within Minecraft for more educational and interactive game play. In Part 4, you'll learn how to extend the Spigot server with a plugin that uses Watson cognitive services to add a little science to your game play.
Also available in: Chinese   Japanese   Portuguese  
Articles 20 Feb 2016
Minecraft and Bluemix, Part 2: Building plugins for Minecraft with Docker and Eclipse
In this tutorial series, you'll learn how to use Docker, Eclipse, and Bluemix to develop, extend, and host your own Minecraft servers. Find out how to use Eclipse to build Minecraft plugins, test them locally using Docker, and use Bluemix to host your Docker containers on the Internet. You'll also harness the power of IBM Watson from within Minecraft for more educational and interactive game play. In Part 2, you'll set up your local development environment in Eclipse, then develop, build, and export your own server-side Minecraft plugin into a local Docker image.
Also available in: Chinese   Japanese   Portuguese  
Articles 18 Feb 2016
Minecraft and Bluemix, Part 3: Deploying Spigot Minecraft servers on Bluemix
In this tutorial series, you'll learn how to use Docker, Eclipse and Bluemix to develop, extend, and host your own Minecraft servers. Find out how to use Eclipse to build Minecraft plugins, test them locally using Docker, and use Bluemix to host your Docker containers on the Internet. You'll also harness the power of IBM Watson from within Minecraft for more educational and interactive game play. In Part 3, we'll deploy Docker images to Bluemix, and run them as Docker containers that are accessible through the cloud.
Also available in: Chinese   Japanese   Portuguese  
Articles 18 Feb 2016
Minecraft and Bluemix, Part 1: Running Minecraft servers within Docker
In this tutorial series, you'll learn how to use Docker, Eclipse, and Bluemix to develop, extend, and host your own Minehttp://www.ibm.com/developerworks/i/twitterdw-26796-minecraftseries.jpgcraft servers. Find out how to use Eclipse to build Minecraft plugins, test them locally using Docker, and use Bluemix to host your Docker containers on the Internet. You'll also harness the power of IBM Watson from within Minecraft for more educational and interactive game play. In Part 1, you'll set up your local Minecraft and Docker development environment, and see the power of Docker for building custom servers for Minecraft. You'll even get started playing with Minecraft on your own locally hosted server!
Also available in: Chinese   Japanese   Portuguese  
Articles 18 Feb 2016
Move your Java application into a hybrid cloud using Bluemix, Part 4
Use Secure Gateway to connect a Java Platform, Enterprise Edition application that runs in Bluemix to a relational database that runs outside of Bluemix.
Also available in: Chinese   Japanese  
Tutorial 17 Feb 2016
Docker: A boon for the modern developer
Use Docker to code more productively and expand your skills more efficiently. Declutter your development environment, eliminate dependency conflicts, and reduce development and learning time by working with containerized applications.
Also available in: Chinese   Japanese  
Articles 05 Jan 2016
Bluemix fundamentals: Deploy a sample Java application to the cloud
Get started working in the cloud using the language and tooling you're already familiar with as a Java developer. In this tutorial, learn how to run, modify, test, and deploy a simple web app to the cloud using the Java language and the IBM Bluemix Tools for Eclipse. Once you deploy the app to Bluemix, IBM's cloud development platform, anyone on the Internet can access it.
Also available in: Chinese   Japanese   Portuguese  
Articles 07 Dec 2015
developerWorks Premium for Java, web, and open source developers
developerWorks recently debuted the developerWorks Premium developer membership program, and it offers a little bit of something for everyone, no matter your area of interest and level of expertise. With an extensive Safari digital library, conference replays and discounts, and other perks curated with you in mind, you're sure to find it worth the price.
Also available in: Chinese   Japanese  
Articles 01 Dec 2015
Using Spark Streaming for keyword detection
As new kinds of devices connect to the internet, they generate petabytes of data every day. Companies analyze this valuable data to better understand and meet their customers’ needs. Streaming big data analytics gives users the ability to analyze data in real time, which is useful in time-critical applications like fraud detection. In this article, learn how to use the Spark Streaming platform for real-time keyword detection.
Also available in: Chinese  
Articles 26 Nov 2015
Notes from developerWorks Technology: Top Java tutorials from 2015
The developerWorks Technologies editor showcases the top tutorials published in 2015 for Java developers.
Also available in: Chinese   Japanese   Portuguese  
Articles 17 Nov 2015
Playful web development, Part 1: Manage user authentication with the Play Framework and Scala
Implement user management for your Play Framework applications and put your Scala skills to work. Pablo Pedemonte takes you through building a basic Play application that handles authentication and authorization. You can even use the application code as a starter for your own Play projects to shorten user-management development time.
Also available in: Chinese   Japanese   Portuguese  
Articles 12 Nov 2015
Introduction to Java programming, Part 1: Java language basics
Get an introduction to the structure, syntax, and programming paradigm of the Java language and platform in this two-part tutorial. Learn the Java syntax that you’re most likely to encounter professionally and Java programming idioms you can use to build robust, maintainable Java applications. In Part 1, master the essentials of object-oriented programming on the Java platform, including fundamental Java syntax. Get started with creating Java objects and adding behavior to them, and conclude with a summary of Java coding best practices.
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Tutorial 11 Nov 2015
Introduction to Java programming, Part 2: Constructs for real-world applications
Continue familiarizing yourself with object-oriented programming on the Java platform. This second half of the Introduction to Java programming tutorial introduces the more-sophisticated syntax and libraries you need to develop complex, real-world Java applications.
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Tutorial 11 Nov 2015
Move your Java application into a hybrid cloud using Bluemix, Part 3
In this article, we examine how to run stand-alone Java programs in Bluemix. We also share some expert hints on navigating the Cloud Foundry documentation, using the CF command-line tool, and debugging in Cloud Foundry and Bluemix.
Also available in: Chinese   Japanese   Portuguese  
Articles 26 Oct 2015
Move your Java application into a hybrid cloud using Bluemix, Part 2
Want to quickly migrate a Tomcat application to IBM Bluemix using Eclipse tooling? This tutorial provides step-by-step directions to set up Eclipse tooling to analyze, migrate, and deploy a Tomcat application to the Liberty for Java runtime in Bluemix. We show you how to set up both the Java runtime and the SQL Database, and how to bind the application to the database.
Also available in: Chinese   Japanese   Portuguese  
Articles 21 Oct 2015
IBM@JavaOne 2015: Meeting the needs of the modern enterprise
The Java platform has been critical to IBM for almost two decades and continues to be as we move deeper into the era of cloud, mobile, and cognitive computing, key themes in this year's JavaOne conference. This article provides an overview of IBM's activities during JavaOne 2015.
Also available in: Chinese  
Articles 19 Oct 2015
Move your Java application into a hybrid cloud using Bluemix, Part 1
In this article, we show you how to tier a hybrid application, and we guide you step by step through migrating parts of your Tomcat or WebSphere applications to Bluemix, while connecting to services best left within your enterprise. We introduce a tool you can use to determine if your application will run in the Bluemix Liberty Java buildpack, and we show you how to connect to an SQL database in the cloud or on-premise. We'll also explain how to update an application for important cloud considerations including session persistence, scaling, and logging.
Also available in: Chinese   Japanese   Portuguese  
Articles 15 Oct 2015
Bluemix fundamentals: 5 key advantages, from a developer's perspective
In this short video, Bobby Woolf discusses benefits and advantages the IBM Bluemix has over other cloud platforms for developers.
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Articles 05 Oct 2015
Bluemix fundamentals: Add a world of cloud services to your application
Explore the cloud services offered in Bluemix based on their general functions. See how to add and manage services in the platform. Take a quick look at boilerplates, which are packages of sample code and services that are oriented around popular Internet technologies and languages.
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Articles 05 Oct 2015
Bluemix fundamentals: Add a Cloudant NoSQL database to your Node.js app
Learn how to create and add a Cloudant NoSQL database to your Node.js web applications on Bluemix. Explore a data-driven, dynamically generated web store that changes appearance depending on current inventory stock levels. Use the web-based Cloudant Dashboard to view and maintain your NoSQL databases.
Also available in: Chinese   Japanese   Portuguese  
Articles 05 Oct 2015
Bluemix fundamentals: Add an SQL database to your PHP app
Learn how to create and add an SQL database to your PHP web applications on Bluemix. Explore a data-driven, dynamically generated web store that changes appearance depending on current inventory stock level. Use the web-based Bluemix SQL Database console to view and maintain your SQL databases.
Also available in: Chinese   Japanese  
Articles 05 Oct 2015
Bluemix fundamentals: Add an SQL database to your Java app
Learn how to create and add an SQL database to your Java web applications on Bluemix. Explore a data-driven, dynamically generated web store that changes appearance depending on current inventory stock level. Use the web-based Bluemix SQL Database Console to view and maintain your SQL databases.
Also available in: Chinese   Japanese   Portuguese  
Articles 05 Oct 2015
Bluemix fundamentals: Set up team collaboration and automatic deployments for your PHP app
In this tutorial, learn the basics of storing your application code in a Git repository hosted at DevOps Services, pushing code to that repository, and configuring a multi-stage Delivery Pipeline for automatic deployment. The pipeline is triggered whenever you or someone on your team pushes code to your Git repository.
Also available in: Chinese   Japanese   Portuguese  
Articles 05 Oct 2015
Bluemix fundamentals: Set up team collaboration and automatic deployments for your Node.js app
In this tutorial, learn the basics of storing your application code in a Git repository hosted at DevOps Services, pushing code to that repository, and configuring a multi-stage Delivery Pipeline for automatic deployment. The pipeline is triggered whenever you or someone on your team pushes code to your Git repository.
Also available in: Chinese   Japanese   Portuguese  
Articles 05 Oct 2015
Bluemix fundamentals: Set up team collaboration and automatic deployments for your Java app
In this tutorial, learn the basics of storing your application code in a Git repository hosted at DevOps Services, pushing code to that repository, and configuring a multi-stage Delivery Pipeline for automatic deployment. The pipeline is triggered whenever you or someone on your team pushes code to your Git repository.
Also available in: Chinese   Japanese   Portuguese  
Articles 05 Oct 2015
Bluemix fundamentals: Deploy a sample PHP application to the cloud
Get started working in the cloud using the language and tools you're already familiar with as a web developer. In this tutorial, learn how to run, modify, test, and deploy a simple PHP app to the cloud. Once you deploy the app to Bluemix, IBM's cloud development platform, anyone on the Internet can access it.
Also available in: Chinese   Japanese   Portuguese  
Articles 05 Oct 2015
Bluemix fundamentals: Deploy a sample Node.js application to the cloud
Get started working in the cloud using the language and tools you're already familiar with as a web developer. In this tutorial, learn how to run, modify, test, and deploy a simple Node.js app to the cloud. Once you deploy the app to Bluemix, IBM's cloud development platform, anyone on the Internet can access it.
Also available in: Chinese   Japanese   Portuguese  
Articles 05 Oct 2015
Bluemix fundamentals: Start your free trial
You've seen the overviews of Bluemix and have a feel for what it can do for you. Now it's time to roll up your sleeves and get down to business. In this tutorial, you'll take the first step in working with IBM's robust cloud platform: starting your free Bluemix trial.
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Articles 05 Oct 2015
Develop full-stack Java apps with Vaadin in the cloud
Use the Vaadin Rich Web Starter boilerplate to deploy a customized DB2-backed, three-tier order-desk web app to the Bluemix cloud in minutes.
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Articles 30 Sep 2015
Full-stack Java web dev with Vaadin
Java web developers are often forced to learn JavaScript, CSS, and HTML5 (cornerstone of all modern browsers) in order to create compelling interactive user experiences for their web applications. Vaadin open source framework empowers Java developers by giving them full-stack control within a 100% Java world.
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Articles 30 Sep 2015
JVM concurrency: Building actor applications with Akka
Actor applications require a different style of programming from the linear approach that is used for single-threaded applications. Go deeper into structuring systems in terms of actors and messages from Scala code, using the Akka toolkit and runtime.
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Articles 12 Aug 2015
Introduction to Java multitenancy
The multitenant JVM recently became available as part of the IBM SDK Java Technology Edition, Version 7 Release 1 as a tech preview. By running multiple applications within a single multitenant JVM, a cloud system can speed applications' start times and reduce their memory footprint. This article introduces the technology behind multitenant cloud JVM and discusses the main costs and benefits.
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Articles 06 Aug 2015
Bluemix demo at the Cloud World Forum 2015
Ed Shee, Cloud Software Specialist for IBM Bluemix, walks through a quick 3-minute demo on creating an application in the cloud with IBM Bluemix utilizing Watson Personality Insights. He shows how easy it is to provision a boilerplate -- a runtime, a service, and some starter code all bundled together.
Videos 04 Aug 2015
Use Maven with the Bluemix DevOps Services delivery pipeline
Learn how to integrate existing Apache Maven projects into the delivery pipeline in Bluemix DevOps Services and how to set up Maven projects to make them available as Bluemix DevOps Services projects.
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Articles 20 May 2015
Build a data mining app using Java, Weka, and the dashDB service
The dashDB (formerly known as Analytics Warehouse and BLU Acceleration) service provides data warehousing and analytics as a service on IBM Bluemix. Developers can develop and deploy a heavy-duty analytic application using blazing-fast IBM BLU database technology offered in the cloud. Learn how to develop a data mining application using the Weka statistical analysis tool and leveraging the IBM BLU columnar database.
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Articles 08 May 2015
JVM concurrency: Acting asynchronously with Akka
The actor model, a long-established approach to concurrent programming, gives you an easy way to build applications for high concurrency and scalability. Learn about the actor model and start working in Scala or Java with the Akka implementation of the model.
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Articles 08 Apr 2015
Use a Liberty JAAS login module for Bluemix single sign-on
This tutorial provides a technique for Liberty-aware authentication with the Bluemix SSO service. Create a sample app that uses the Bluemix SSO service for user login; the Liberty server creates all necessary objects (Subject, Principal, Session) upon successful authentication. A Liberty app can obtain Bluemix SSO capabilities using JAAS authentication with the SSO service so that your authentication mechanism is abstracted from application code.
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Articles 24 Mar 2015
Rapidly build a rich three-tier web app, Part 2: Build the application tier
In this three-part tutorial, learn how to use IBM Rational Application Developer and IBM Bluemix to rapidly build and host a multi-tier Java Enterprise Edition (JEE) app. Find out how you can save time in each stage: creating the data model and database, generating the data access code using the Java Persistence API (JPA), writing the Enterprise JavaBeans (EJBs) and web services, and using Dojo to create a rich web UI for viewing and modifying the data. When the application is complete, you'll deploy it to IBM Bluemix, the IBM Platform as a Service (PaaS).
Also available in: Chinese   Russian   Japanese   Portuguese  
Articles 10 Mar 2015
Rapidly build a rich three-tier web app, Part 3: Create a rich web UI
In this three-part tutorial, learn how to use IBM Rational Application Developer and IBM Bluemix to rapidly build and host a multi-tier Java Enterprise Edition (JEE) app. Find out how you can save time in each stage: creating the data model and database, generating the data access code using the Java Persistence API (JPA), writing the Enterprise JavaBeans (EJBs) and web services, and using Dojo to create a rich web UI for viewing and modifying the data. When the application is complete, you'll deploy it to IBM Bluemix, the IBM Platform as a Service (PaaS).
Also available in: Chinese   Russian   Japanese   Portuguese  
Articles 10 Mar 2015
Rapidly build a rich three-tier web app, Part 1: Build the database
In this three-part tutorial, learn how to use IBM Rational Application Developer and IBM Bluemix to rapidly build and host a multi-tier Java Enterprise Edition (JEE) app. Find out how you can save time in each stage: creating the data model and database, generating the data access code using the Java Persistence API (JPA), writing the Enterprise JavaBeans (EJBs) and web services, and using Dojo to create a rich web UI for viewing and modifying the data. When the application is complete, you'll deploy it to IBM Bluemix, the IBM Platform as a Service (PaaS).
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Articles 10 Mar 2015
Explore MQTT and the Internet of Things service on IBM Bluemix
For interconnecting devices and applications, the Internet of Things (IoT) service in Bluemix is simple but powerful, thanks to MQTT (Message Queue Telemetry Transport). In this tutorial, see how MQTT works effectively behind the IoT service, and follow an easy process to build apps using the IoT service with Java and the Node-RED editor.
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Articles 18 Feb 2015
Create and manage cloud applications with Java
For full, continuous integration, you need to automate deployment of applications in the cloud. This tutorial includes examples that show how to use the Cloud Foundry Java Client Library to automate how you create and manage apps in IBM Bluemix.
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Articles 10 Feb 2015
Integrating FindBugs, CheckStyle and Cobertura with Rational Team Concert build system
This article discusses the integration of quality assurance tools FindBugs, CheckStyle and Cobertura with IBM Rational Team Concert. This integration reduces defect generation when compiling and building an application. It improves the code quality of the application while performing the day-to-day build job. This technique can be used cross-platform with products and applications built on Java technology.
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Articles 22 Jan 2015
Embed rich reports in your applications
In this tutorial, learn how to embed reports in a sample application using the Embeddable Reporting service on Bluemix, IBM's cloud development platform. You'll start with a Liberty for Java application and add the Embeddable Reporting service, the MongoLab service, and the dashDB service. From this starting point, you can begin to embed your own reports into more complex applications.
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Articles 21 Jan 2015
Create a coupon-finding app by combining Yelp, Google Maps, Twitter, and Klout services
Use Bluemix, MongoDB, and external services provided by Yelp, Google, Twitter, and Klout to build an app that finds highly rated businesses.
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Articles 17 Dec 2014
Translate your Twitter feed
Use the Watson Machine Translation and Watson Language Identification services in IBM Bluemix to translate and normalize content from social media channels such as Twitter in preparation for sentiment analysis.
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Articles 24 Nov 2014
Build a portable Java EE app across Bluemix and private cloud patterns
As a Java developer, you want the “write once, run anywhere” promise of Java. How can you ensure this if you are moving your applications between IBM Bluemix and on-premise cloud environments like SmartCloud Orchestrator or Pure Application System? In this article, we show you how.
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Articles 10 Nov 2014
OAuth 2.0 clients in Java programming, Part 3: Authorization code grant
This multi-part series will help you develop a generic and reusable OAuth 2.0 client that can be used to interface with any OAuth 2.0-compliant server. Part 1 explained how to implement the resource owner password credentials grant. Part 2 described how to implement the client credentials grant. Now, Part 3 teaches you how to implement the authorization code grant.
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Tutorial 04 Nov 2014
OAuth 2.0 clients in Java programming, Part 2: Client credentials grant
This multi-part series will help you develop a generic and reusable OAuth 2.0 client that can be used to interface with any OAuth 2.0-compliant server. Part 1 explained how to implement the resource owner password credentials grant. Now, Part 2 describes how to implement the client credentials grant.
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Tutorial 28 Oct 2014
Develop and manage Java Apps with IBM Bluemix and DevOps Services
Lauren Schaefer shows how easy it is to plan, track, and manage an agile Java development project with IBM DevOps Services.
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Articles 08 Oct 2014
IBM@JavaOne 2014: Developers first
As a longtime licensee of the Java platform, IBM is a regular supporter and active participant in the annual JavaOne conference. This article provides an overview of IBM's activities -- keynotes, technical presentations, demos, and after-hours entertainment -- during JavaOne 2014.
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Articles 24 Sep 2014
Going to JavaOne? Take a Break!
If you find yourself looking for a little downtime from all the excitement at JavaOne 2014, look no further. This article sends you in the right direction to rest, refresh, and recharge.
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Articles 24 Sep 2014
From the developerWorks trenches: The best open technologies content in 2014
As developerWorks celebrates its 15th anniversary, the technical landscape has never been more exciting or complex. Myriad products, projects, technologies, and techniques abound. Let us cut through the noise and provide a quick look at what's hot right now.
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Articles 16 Sep 2014
Build a Hangman game with Java, Ajax, and Cloudant
Learn how to build an online Hangman game by using the Bluemix Liberty for Java runtime and Cloudant NoSQL database service.
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Tutorial 04 Sep 2014
JVM concurrency: Asynchronous event handling in Scala
Scala Future and Promise classes give you powerful ways to handle asynchronous processing, including nonblocking ways to organize and sequence events. The async / await constructs, implemented as a macro, make it even easier to write nonblocking event handling in Scala. This tutorial shows you the basic Future and Promise techniques in action, then demonstrates how async / await can convert what looks like simple blocking code to nonblocking execution.
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Articles 02 Sep 2014
Build a game app with Liberty, Cloudant, and Single Sign On
This tutorial shows how to quickly build an online game application based on IBM Bluemix prebuilt services.
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Articles 22 Aug 2014
Unlock your on-premises translated content in the cloud
Enterprise software developers making the transition to cloud computing often ask how they can use the existing translated content in their on-premises databases from the cloud. Find out how to use the Cloud Integration add-on in Bluemix to unlock your translated content from systems of record and access it from the cloud even if the database is behind a secure firewall.
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Articles 19 Aug 2014
Improving performance and scalability for IBM Sterling Order Management
This article discusses the design best practices that are important for the performance and scalability of the IBM Sterling Order Management solution. Adopting these design best practices during implementation, helps eliminate the common performance bottlenecks that are introduced with custom design or code.
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Articles 07 Aug 2014
Java multitenancy: Configuration options, tenant lifecycle, and isolation in action
The multitenant JVM is available with the IBM SDK Java Technology Edition, Version 7 Release 1 as a tech preview. By running multiple applications within a single multitenant JVM, a cloud system can speed applications' start times and reduce their memory footprint. Examine the tenant lifecycle, learn some of the available configuration options, and see the benefits of isolation of statics in tenant applications. This article builds on a previous developerWorks article, "Introduction to Java multitenancy."
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Articles 31 Jul 2014

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