This article shows how to quickly build an EMF model using the Ecore Tools UML editor and generate the Java source code. For this article I am using eclipse eclipse-modeling-tools-2019-06. Modeling Motivations Main motivations for modeling and code generation: separation of application logic w.r.t. implementation: your independent model can be Read more…
You use maven in Eclipse, and need to work with multi-module (hierarchical) projects? This page shows how to create and work with maven multi-module projects in Eclipse. For this article, I am using eclipse-jee-2019-06, which already supports maven. If you use a different version of eclipse, make sure the m2e Read more…
Here are three examples covering maven basics in Eclipse such as: convert a java project to maven nature, create a project with an archetype selection, and refresh/update projects and understand files and structure. For the article, I use eclipse-jee-2019-06, which already provides maven support. If you use a different version Read more…
Notes on practical usage of Java 8 stream filtering. Stream Filtering A Stream<T> references a sequence of T values, and exposes a set of aggregate operations we can use to manipulate data in a pipeline. As an example, we can find the name of any people older than 20. In java, you can loop Read more…
Here are some notes on parsing XML file with java to extract information Simple Example Assume we have an XML file and we want to extract specific attributes. A sample file could be: With XMLStreamReder Here is the code to quickly scan the XML file and get the values for Read more…
This page presents a few examples of using Java for passwords and hashing. Generate Password A Java example to generate a random password containing only alphanumeric characters. Java Code to ComputeSHA-512 digest other.. linux get sha-512/
Generics Generics were introduced in java 5 to add stability to the code. You can add type variables to classes, interfaces and methods. Generic Class Declaration Below you see an example of generic class declaration. by writing class Box<T>, you introduce the type parameter T, that can be used anywhere in the class. Read more…
In Bug 514458, I added the “Theme” dynamic menu to the Eclipse IDE. This post explains how I did this. Menu Eclipse 3.x style First edit the plugin.xml, and add a menu contribution. With the locationURI menu:org.eclipse.ui.appearance?after=org.eclipse.ui.window.appearance.separator1, you’ll contribute a submenu to the Window > Appearance menu, just after the Read more…
Environment Setup and Source Code As prerequisite we will need to get Eclipse SDK and add the E4 Tools. in this tutorial we use Eclipse IDE for Eclipse Committers 4.5.0 M5 plus the E4 Tools I20150105-1100. The source code for this examples is in project com.asegno.e4app.first , clonable from https://github.com/psuzzi/asegno.git repo. Create an E4 RCP Application CTRL+N Read more…
This post describes how I install Java, Ant and Maven on my Windows PC, and how I setup the environment variables for development. Install Java, Ant and Maven When installing Java, Ant and Maven, I’m using C:\opt as basefolder, instead of the standard C:\Program Files (x86) directory. Install Java, Multiple Versions To Read more…