Tag: Java
Sometimes you have multiple services you want to call at the same time and merge their results when they’re all in (or after a timeout). In Enterprise Integration Patterns …
Sometimes you have an Oracle database which contains a lot of logic and you want to expose specific logic as REST services. There are a variety of ways to …
In a previous article, I talked about an environment, I prepared on my Windows laptop, with a guest Operating System, Docker and Minikube available within an Oracle VirtualBox appliance. …
Last November, I attended the Devoxx Belgium 2018 event. In this article I gathered some practical information about the event, and the sessions that were held. Perhaps this gives …
TL;DR: • Using GraalVM Java applications can be compiled into native standalone executables (will be demonstrated). • Native executables of small Java programs startup blazingly fast, use considerably less …
Running an application within a Docker container helps in isolating the application from the host OS. Running GUI applications like for example an IDE from a Docker container, can …
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 …
There are several good blogs about this subject (like this one), and I never paid much attention to Java and licensing. Until one of our customers became a bit …
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 …
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 …
Most enterprises have a lot of variety in the data they deal with. Some data is highly structured and other is very unstructured, some data is bound by strict …
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 …
Voor een organisatie in de publieke sector werd aan AMIS gevraagd om met behulp van Oracle Service BUS 11g, een koppeling te realiseren tussen diverse applicaties aangaande het proces …
In a recent article, I shared my first steps (small step for mankind, big steps for me) with Oracle Management Cloud: First steps with Oracle Management Cloud – Application …
Goal and warning This blog will show how to invoke java code directly from within a Business Rules component. I didn’t manage to find this in the Oracle product …
Below you will find an overview of all the sessions that took place at the AMIS25 Beyond the Horizon conference (1-3 June 2016, Katwijk, The Netherlands) along with the …
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 foundation for most of the Oracle Public Cloud Platform services is the Java Cloud Service (JCS) that itself is powered by WebLogic Server. The same WebLogic that Oracle …
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. …
During JavaOne 2015, I present a Birds of Feather session (BOF 2817) on Docker for Java Developers – in combination with Vagrant and Puppet (and leveraging Virtual Box) (Monday …
The objective of this article: prepare an environment for experimenting with Oracle StreamExplorer using two Docker containers inside a Linux VM running on my Windows laptop. And with the …
My objective in this article: create generally reusable Linux 64 bit (Ubuntu 14.0.4 with Desktop) Virtual Box Image – based on Vagrant and Puppet as to stamp out multiple …
Monday June 22nd was the launch date for Oracle for 24 (and more) Cloud Services. June is traditionally an important month for Oracle when it comes to product launches …
This article is just a quick post of some code I want to have easy access to. It runs in Java SE – outside any container in a stand …
This article describes a Java EE 7 web application that exposes a REST service that handles HTTP POST requests with JSON payload. Any message received is sent through a …
In a recent article, I described how StreamExplorer can be configured to consume events by exposing a REST service to which clients can send HTTP POST requests with JSON …
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 …
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 …
