Modular code

Learn about modular code in this section, including information and resources on modular code tools, restful Web services, Web services specification, Web portal testing, Java server faces and server pages, servlet Java, modular containers and programming code. Also, find there is news and tips on code troubleshooting, Java and JVM performance tuning, software languages, UI patterns and Spring framework. Find expert advice, podcasts and tutorials on a variety of subjects in this section.

April 05, 2019 05 Apr'19
How to install Tomcat as your Java application server

Doing Java web development and need to install Tomcat? This example will show you how to download, meet prerequisites, install and test the popular Java web server.
February 27, 2019 27 Feb'19
A simple Java Supplier interface example for those new to functional programming

There are only half a dozen classes you really need to master to become competent in the world of functional programming. The java.util.function package contains well over 40 different components, ...
October 21, 2018 21 Oct'18
Five Oracle Code One sessions you don't want to miss

From Jenkins pipelines written in Groovy, to cloud native applications written using the Eclipse MicroProfile, there is plenty to be excited about at the conference that was once called JavaOne. ...
July 06, 2018 06 Jul'18
Embed the WebSphere Liberty profile in an executable JAR with Maven

The last step you take before deploying your Java web apps into containers is packaging them in executable JAR files. Here we show you how to take the WebSphere Liberty profile's open source ...

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Java command-line interface tools every JDK developer should know

These five JDK tools -- javac, javap, jstat, jdeps and jar -- should be on the must-know list for every developer to help comprehend the underlying code in a project. Continue Reading
Use Tomcat, Eclipse to create a JAX-RS REST web service

Use this step-by-step tutorial with an example rock-paper-scissors game to understand how to create and take advantage of RESTful web services with Eclipse and Tomcat. Continue Reading
How to create an efficient container-based architecture

Containers can introduce as many problems as they solve. In case you missed it, these four articles offer practical advice for consistent and structured container implementations. Continue Reading

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How to Git started and use the Github Desktop app tool

The GitHub Desktop client has been around for a few years now. In this GitHub Desktop app tutorial, we take a look at how well the tool performs the five basic Git commands. Continue Reading
Let's dispel three common Java microservices myths

It's easy to develop Java microservices, but confusion over what they are and how they work tends to muddy the waters. Here, we clarify a few myths pertaining to Java microservices. Continue Reading
10 Git quiz questions to test your distributed version control skills

Test your distributed version control knowledge with this 10 Git questions quiz. It's a quick test that will see how well you know the basics of the popular DVCS tool. Continue Reading

Learn to apply best practices and optimize your operations.

Get these benefits when you simplify a WebSphere Portal URL

If your Portal URL displays the tired /wps/portal preamble in the browser's location bar, it's time to perform Portal URL simplification and change it. Continue Reading
Step-by-step SOAP web services example in Java using Eclipse

There was a time when creating a SOAP web service was an arduous task. In this step-by-step SOAP web services example in Java using Eclipse, let's show how times have changed. Continue Reading
A git reset hard example: An easy way to undo local commits and shift head

For those looking to undo a commit, the easiest way to do it is by using the git reset hard command. It's the easy way to reset the HEAD, the index and the working tree as well. Continue Reading

We’ve gathered up expert advice and tips from professionals like you so that the answers you need are always available.

Don't git revert that last commit, git reset instead

Developers should only use git revert if they need to reverse out a specific change in their code. To simply undo a previous commit to a shared repository, use git reset instead. Continue Reading
Stop with the unsafe internal Java API calls, or the JDK will stop it for you

Soon, any code that uses Java internal APIs will not compile, and shortly after that, code that uses classes in sun.misc will not even run. Continue Reading
New IDE tools to visualize code may accelerate app dev

IDE tools for code visualization have always been difficult to implement. But given the benefits, new tools have emerged to make it possible to easily visualize your code. Continue Reading