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Java 8 idioms: Using closures to capture state
Whereas lambda expressions rely on internal parameters and constants, closures look to variables for additional information. Find out how to use closures to carry state from a defining context to the point of execution in your programs.
06 Dec 2017
Get started with the JSON Binding API, Part 2: Custom binding with JSON-B
The JSON Binding API makes customizing data serialization and deserialization easy and intuitive, and it puts a lot of power in your hands. Learn how to use and combine annotations and runtime configuration to control the binding and appearance of properties, fields, date and time formats, and more. Then get started using JSON-B adapters and low-level serializers and deserializers to change the logic of operations in JSON-B.
Also available in: English  
21 Nov 2017
What's new in Java EE 8
The next edition of the Java enterprise platform is built for the cloud and reactive programming, and will shape enterprise application development for years to come. Get your first look at new APIs and upgrades for Java enterprise security, JSON binding, HTTP/2 server push, and more.
Also available in: Chinese  
10 Nov 2017
Get started with the JSON Binding API, Part 1: The JSON Binding API in a nutshell
It's been a long wait, but Java EE 8 introduces powerful JSON binding features to the core Java enterprise platform. Get started with default features, custom annotations, and runtime configurations in the new Java API for JSON Binding.
Also available in: English   Chinese  
10 Nov 2017
Java 8 idioms: Cascading lambdas
Venkat explains the mysterious origins of cascading lambdas, a type of syntax that arises from functions returning functions in highly concise code.
Also available in: Chinese  
07 Nov 2017
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.
Also available in: Chinese  
31 Oct 2017
Java 8 idioms: Java knows your type
The Java compiler is more than capable of inferring type, so why not let it? Learn how to use type inference in lambda expressions, and get tips for improving parameter naming.
Also available in: Chinese  
11 Oct 2017
Minecraft and Bluemix, Part 3: Running Spigot servers in Kubernetes
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, you learn how to take the plugin that you built in Part 2 to the next level -- by getting it running on the web in Bluemix.
Also available in: Chinese   Japanese   Portuguese  
20 Sep 2017
What's new in Spring Framework 5
Spring Framework 5.0 will change how developers understand and build Spring-based applications for years to come. Find out how Spring 5 integrates functional and reactive programming models into its core architecture, updates major dependencies, and trades legacy baggage for notable performance boosts--all while retaining that familiar Spring Framework look-and-feel.
Also available in: Chinese  
19 Sep 2017
5 things you didn't know about ...: Apache Maven plugins
Can’t get enough of Maven? Neither can we! Learn how plugin goals map to the Maven lifecycle, then get started with four plugins that will take your projects to the next level, including Maven Site from GitHub and Maven Cargo from Codehaus.
Also available in: Chinese   Portuguese  
11 Sep 2017
Java 8 idioms: Functional interfaces
In Java 8, lambda expressions are treated as a type of functional interface. Learn how this design decision supports backward compatibility with older versions of the language, then see examples of both custom and built-in functional interfaces in a Java program. Find out why using built-in interfaces is usually optimal, even in cases where a custom interface might seem more obvious.
Also available in: Chinese   Portuguese   Spanish  
08 Sep 2017
Sample code: Analyze text with the Watson Personality Insights service
This code shows you how to use the node.js API for the Watson Personality Insights service. Given some text, Watson analyzes the openness, conscientiousness, extraversion, agreeableness, emotional range, and needs of the speaker.
18 Aug 2017
Sample code: Translate natural language with the Watson Language Translator service
This code shows you how to use the Java API for the Watson language translator service. Given some text, a source language, and a target language, Watson translates that text and returns one or more translations to you.
18 Aug 2017
Sample code: Identify the tone of written text with the Watson Tone Analyzer service
This code shows you how to use the node.js API for the Watson Tone Analyzer service. Given some text, Watson evaluates the tone, looking for qualities such as the speaker's levels of anger, disgust, joy, fear, and sadness.
18 Aug 2017
Sample code: Recognize and identify faces in an image with the Watson Visual Recognition service
This code shows you how to use the node.js API for the Watson Visual Recognition service. Given an image, Watson looks for faces in that image and attempts to recognize each of those faces.
17 Aug 2017
Java 8 idioms: Why the perfect lambda expression is just one line
Short, concise lambda expressions support code readability, which is one of the key benefits of programming in the functional style. In addition to being hard to read, multiline lambdas are also hard to test and reuse, which can lead to duplication of effort and poor code quality. In this installment, learn to write single-line lambdas for code that is easier to read, test, and reuse.
02 Aug 2017
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  
26 Jul 2017
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  
19 Jul 2017
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  
19 Jul 2017
Sample code: Translate natural language with the Watson Language Translator service
This code shows you how to use the node.js API for the Watson Language Translator service. Given some text, a source language, and a target language, Watson translates that text and returns one or more translations to you.
18 Jul 2017
Sample code: Identify the context of natural language with the Watson Natural Language Classifier service
This code shows you how to use the Java API for the Watson natural language classification service. Given some text and a context, Watson analyzes the text and returns a list of categories relevant to that text.
18 Jul 2017
Sample code: Identify the context of natural language with the Watson Natural Language Classifier service
This code shows you how to use the node.js API for the Watson natural language classification service. Given some text and a context, Watson analyzes the text and returns a list of categories relevant to that text.
18 Jul 2017
Sample code: Analyze text with the Watson Personality Insights service
This code shows you how to use the Java API for the Watson Personality Insights service. Given some text, Watson analyzes the openness, conscientiousness, extraversion, agreeableness, emotional range, and needs of the speaker.
18 Jul 2017
Sample code: Identify the tone of written text with the Watson Tone Analysis service
This code shows you how to use the Java API for the Watson tone analysis service. Given some text, Watson evaluates the tone, looking for qualities such as the speaker's levels of anger, disgust, joy, fear, and sadness.
Also available in: Japanese  
18 Jul 2017
Sample code: Identify objects in an image with the Watson Visual Recognition service
This code shows you how to use the node.js API for the Watson Visual Recognition service. Given an image, Watson attempts to identify objects in that image.
18 Jul 2017
Java 8 idioms: An alternative to passing through
Pass-through lambda expressions come in a few varieties, but they are almost always more trouble than they're worth. Learn how to identify common varieties of pass-throughs in your code, then see what happens when you replace each one with a simple and expressive method reference.
Also available in: Chinese   Japanese  
07 Jul 2017
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.
Also available in: Chinese  
21 Jun 2017
Java 8 idioms: In praise of helpful coding
A Java 8 convention for function composition could improve not only your code, but your relationship with other developers.
Also available in: Chinese   Japanese  
30 May 2017
5 things you didn't know about ...: Multithreaded Java programming
Multithreaded programming is never easy, but it does help to understand how the JVM processes subtly different code constructs. Steven Haines shares five tips that will help you make more informed decisions when working with synchronized methods, volatile variables, and atomic classes.
Also available in: Chinese   Russian   Japanese   Portuguese   Spanish  
17 May 2017
5 things you didn't know about ...: Java Database Connectivity
JDBC, or Java Database Connectivity, is one of the most frequently used packages in the entire JDK, and yet few Java developers use it to its fullest -- or most up-to-date -- capacity. Ted Neward offers an introduction to newer JDBC features like ResultSets that automatically scroll and update on the fly, Rowsets that can work with or without an open database connection, and batch updates that can execute multiple SQL statements in one fast trip around the network.
Also available in: Chinese   Russian   Japanese   Portuguese  
17 May 2017
5 things you didn't know about ...: Everyday Java tools
Some Java tools defy categorization and are frequently collected under the rubric of "things that work." This installment of 5 things offers up a collection of tools you'll be glad to have, even if you end up storing them in your kitchen drawer.
Also available in: Chinese   Russian   Japanese   Portuguese  
17 May 2017
5 things you didn't know about ...: Enhancing Swing
Swing is an older toolkit, developed long before the advent of beautiful user interfaces, and it's missing some of the components you might need for building rich UIs. Fortunately, open source projects like Substance, SwingX, and the Java Look-and-Feel Graphics Repository make up the difference. Author Steven Haines shows you how to painlessly add tree tables, syntax highlighting, and more to your Swing UIs.
Also available in: Chinese   Russian   Japanese  
17 May 2017
5 things you didn't know about ...: Apache Maven
You might be familiar with profiles, but did you know that you can use them in Maven to execute specific behaviors in different environments? This installment in the 5 things series looks beyond Maven's build features, and even its basic tools for managing the project life cycle, delivering five tips that will improve the productivity and ease with which you manage applications in Maven.
Also available in: Chinese   Russian   Japanese   Spanish  
17 May 2017
5 things you didn't know about ...: Java performance monitoring, Part 2
If it's news to you that the JDK ships with the full-featured profiler JConsole, you'll be even more surprised to learn about the five stand-alone profiling utilities introduced in this article. Find out how lightweight (and in some cases experimental) Java process monitoring and analysis tools can help you hone in on performance bottlenecks like thread starvation, deadlocks, and object leaks.
Also available in: Chinese   Russian   Japanese   Spanish  
17 May 2017
5 things you didn't know about ...: Java performance monitoring, Part 1
Blaming bad code (or bad code monkeys) won't help you find performance bottlenecks and improve the speed of your Java applications, and neither will guessing. Ted Neward directs your attention to tools for Java performance monitoring, starting with five tips for using Java's built-in profiler, JConsole, to collect and analyze performance data.
Also available in: Chinese   Russian   Japanese   Portuguese   Spanish  
17 May 2017
5 things you didn't know about ...: JARs
Many Java developers never think beyond the basics of JARs -- only using them to bundle classes before shipping them off to the production servers. But a JAR is more than just a renamed ZIP file. Learn how to use Java Archive files at their fullest capacity, including tips for jarring Spring dependencies and configuration files.
Also available in: Chinese   Russian   Japanese   Portuguese   Spanish  
17 May 2017
5 things you didn't know about ...: java.util.concurrent, Part 2
In addition to concurrency-friendly Collections, java.util.concurrent introduced other pre-built components that can assist you in regulating and executing threads in multithreaded applications. Ted Neward introduces five more of his Java programming must-haves from the java.util.concurrent package.
Also available in: Chinese   Russian   Japanese   Portuguese  
17 May 2017
5 things you didn't know about ...: java.util.concurrent, Part 1
Writing multithreaded code that both performs well and protects applications against corruption is just plain hard -- which is why we have java.util.concurrent. Ted Neward shows you how concurrent Collections classes like CopyOnWriteArrayList, BlockingQueue, and ConcurrentMap retrofit standard Collections classes for your concurrency programming needs.>
Also available in: Chinese   Russian   Japanese  
17 May 2017
5 things you didn't know about ...: The Java 6 Collections API, Part 2
You can take Java Collections anywhere, but don't take them for granted. Collections hold mysteries and can make trouble if you don't treat them right. In this installment of 5 things, Ted Neward explores the complex and mutable side of the Java Collections API, with tips that will help you do more with Iterable, HashMap, and SortedSet, without introducing bugs to your code.
Also available in: Chinese   Russian   Japanese   Portuguese  
17 May 2017
5 things you didn't know about ...: The Java 6 Collections API, Part 1
The Java 6 Collections API is far more than a replacement for arrays, though that's not a bad place to start. Ted Neward dispenses five tips for doing more with Collections, including a primer on customizing and extending the Java Collections API.
Also available in: Russian   Japanese   Spanish  
17 May 2017
Java 8 idioms: Functional alternatives to the traditional for loop
The for loop might be ubiquitous, but it isn't irreplaceable. Learn how range, iterate, and limit cut the fuss out of even complex iterations in Java.
Also available in: Chinese   Japanese  
30 Apr 2017
Protect your apps from cross-site scripting (XSS) attacks
One of the most common techniques for cross-site scripting attacks is injecting code into a web page. This code snippet shows you how to use escape sequences so that any injected code can't run.
14 Apr 2017
Java 8 idioms: Function composition and the Collection Pipeline pattern
Endless looping isn't the only way to iterate collections in your code. Function Composition and Collection Pipeline are two patterns that let you use expressions, rather than statements, to sort collections in Java.
Also available in: Chinese   Japanese  
30 Mar 2017
Java 8 idioms: An easier path to functional programming in Java
Learning to program declaratively, rather than imperatively, is an easy first step to adopting functional techniques in your Java programs.
Also available in: Chinese   Japanese  
24 Feb 2017
Notes from the developerWorks Technology editor: The best of 2016
Review the top content published in the Java development and Web development hubs in 2016.
04 Jan 2017
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.)
Also available in: Japanese  
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.
Also available in: Japanese  
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   Japanese  
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   Japanese  
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   Japanese  
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.
06 Jun 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  
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  
04 May 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.
Also available in: Chinese   Japanese  
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  
20 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  
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  
07 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  
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  
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  
12 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  
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  
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  
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  
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.
Also available in: Chinese   Japanese   Portuguese  
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.
Also available in: Chinese   Japanese   Portuguese  
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  
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  
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  
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  
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  
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  
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  
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  
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.
Also available in: Chinese   Portuguese  
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.
Also available in: Chinese   Japanese  
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.
Also available in: Chinese   Japanese  
30 Sep 2015
Data integration at scale: Explore OSLC examples
Explore simple but useful examples of how the conceptual layers presented so far in this series combine to integrate information easily and seamlessly across various tools. The examples use Open Services for Lifecycle Collaboration (OSLC) vocabularies and standards, but they are equally useful for any group of participants wanting to connect information quickly to find value across data stores.
Also available in: Chinese   Portuguese  
02 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.
Also available in: Chinese   Russian   Japanese  
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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06 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.
Also available in: Chinese   Japanese  
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.
Also available in: Chinese   Chinese   Russian   Japanese   Spanish  
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.
Also available in: Chinese   Russian   Japanese   Portuguese  
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.
Also available in: Chinese   Russian   Japanese  
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  
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).
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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).
Also available in: Chinese   Russian   Japanese   Portuguese  
10 Mar 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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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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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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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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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.
Also available in: Chinese   Russian   Japanese   Portuguese   Spanish  
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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10 Nov 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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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.
Also available in: Russian  
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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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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16 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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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.
Also available in: Chinese   Russian   Japanese   Portuguese   Spanish  
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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19 Aug 2014
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