Category: Java
Automating the Oracle JDK installation on RHEL derivatives (such as CentOS, Oracle Linux) and Debian derivatives (such as Mint, Ubuntu) differs. This is due to different package managers and …
In a previous article I talked about an OSBServiceExplorer tool to explore the services (proxy and business) within the OSB via WebLogic Server MBeans with JMX. The code mentioned …
Spring Boot is great for running inside a Docker container. Spring Boot applications ‘just run’. A Spring Boot application has an embedded servlet engine making it independent of application …
Spring Boot allows you to quickly develop microservices. Application Container Cloud Service (ACCS) allows you to easily host Spring Boot applications. Oracle provides an Application Cache based on Coherence …
Spring is a powerful framework, but it requires some skill to use efficiently. When I started working with Spring a while ago (actually Spring Boot to develop microservices) I …
In order to quickly develop microservices, Spring Boot is a common choice. Why should I be interested in Spring Boot? In this blog post I’ll give you some reasons …
The Java Servlet specification does not include handling a PATCH request. That means that class javax.servlet.http.HttpServlet does not have a doPatch() method, unlike doGet, doPost, doPut etc. That does …
In this article I will demonstrate how we can work with JSON based data – for analysis, exploration, cleansing and processing – in JShell, much like we do in …
In a recent article, I created an isolated Docker Container as Java 9 R&D environment: https://technology.amis.nl/2017/10/11/quick-and-clean-start-with-java-9-running-docker-container-in-virtualbox-vm-on-windows-10-courtesy-of-vagrant/. In this article, I will use that environment to take few small steps …
The messages from JavaOne 2017 were loud and clear. Some of these: Java 9 is here, the OpenJDK has all previously exclusive commercial features from the Oracle (fka SUN) …
It is easy to be seduced by some of the attractive qualities of Node (aka Node.js) – the JavaScript technology that makes server side development fun again. Developing light …
At a public sector organization in the Netherlands there was the need to make an inventory of the deployed OSB services in order to find out, the dependencies with …
At a public sector organization in the Netherlands an OSB proxy service was (via JMS) reading messages from a WebLogic queue. These messages where then send to a back-end …
This article explains how to implement a streaming analytics application using Kafka Streams that performs a running Top N analysis on a Kafka Topic and produces the results to …
Kafka Streams is a light weight Java library for creating advanced streaming applications on top of Apache Kafka Topics. Kafka Streams provides easy to use constructs that allow quick …
My challenge is simple: I am creating a small Java application – single class with main method – that has many direct and indirect dependencies. In order to run …
WebLogic Server allows you to customize your access.log. This can be very powerful if you want to monitor for example service response times in a tool like Splunk (see …
This article explains how the process of doing performance measurements of an OSB Proxy Service and presenting them in a “performance analysis document” was partly automated. After running a …
With the release of ADF 12.2.1 in the fall of 2015, Oracle finally added support for declaratively consuming a RESTful web service that responds in JSON format. Until then, …
In terms of actual news, this year’s JavaOne conference had not very much to offer. It was a party – celebrating 20 years of Java, and at the same …
The following are slides and scenes from the JavaOne 2015 Keynote on Sunday October 25th 2015. You can watch the on demand replay of this keynote at: https://www.oracle.com/javaone/on-demand/index.html. …
This article shows a very simple, straightforward example of making an HTTP POST call to a url (http://localhost:8080/movieevents) and sending a JSON payload to that URL. The REST service …
The topic of this article: how to publish a REST service from a stand alone JVM with only Java SE (standard edition). So without involving any kind of Java …
Oracle SOA Suite and many other Oracle products have extensive Java API’s to expose their functionality. WLST can often be used for relatively course grained actions. WLST (the version …
Not all Oracle ADF projects are built with ADF Business Components (ADF BC). Some organizations prefer to use EJB/JPA (EclipseLink) instead of ADF BC. The EclipseLink JPA provides developers with …
De Java SIG (Special Interest Group) van AMIS organiseert op donderdag 16 april een bijeenkomst (publiek toegankelijk) over asynchrone interacties in Java EE (web) applicaties. Synchrone interacties in de …
Everyone can do HTTP calls and thus call most webservices. Interfacing with JMS queues or topics though is a bit more difficult (when not using Oracle SOA Suite). An …
Recently I walked into something strange. I had developed a simple composite application. The application is used to read a file and route the content to another service. The …
– This blog post was also published on http://www.sonatype.org/ – Sonatype Nexus is an often used artifact repository. In a previous blog post I have shown an example how Maven …
Let’s tackle a single topic at a time in this blog post ; ) SOA Suite 12c provides a Java API to perform operations on the SOA infrastructure and …
Mobile apps usually have the possibility to toggle the springboard by using an icon that is displayed in the header of the app. The Oracle MAF reference app, Work …
Images are heavily used in Mobile apps. For instance a list that contains employees usually shows the images of these employees. This works well when you have a WIFI …
An important part of a release process is storing artifacts in an artifact repository. Many customers use custom implementations of artifact repositories (such as file shares in combination with …
JavaOne 2014 is first of all a community gathering – with over 500 sessions that discuss Java related topics in tantalizing details. A meeting of minds, of kindred spirits …
The Oracle SOA Suite Spring component has been present since SOA Suite 11.1.1.3 (11gR1 PS2). This component allows easy integration of Java code with other SOA Suite components such …
A recent article (http://blog.soasuitehandbook.org/implement-an-asynchronous-web-service-using-jax-ws-in-jdeveloper/) described how to publish an Asynchronous Web Service from Java (using JAX-WS). It also showed how such a Web Service can be tested using SoapUI. …
This article discusses how to implement an asynchronous web service in Java EE. The Java application will expose a one way operation that will process the request and send …
This is an important moment for Java. The general availability of Java 8 – more specifically of Java 8 SE, Embedded, (and shortly ME as well) and FX (and …
The AMIS ADF Performance Monitor is an advanced tool designed for measuring, analyzing, improving, and checking the performance of Oracle ADF applications. The monitor can track and collect crucial …
Although deployment of Oracle ADF 11g web applications on Tomcat is not officially supported, we have successfully deployed several ADF 11g applications on Tomcat 6. In fact, once you …
