Op 22 september begint in San Francisco de Oracle OpenWorld: hét internationale evenement waar Oracle haar productstrategie presenteert en Oracle-specialisten ervaringen uitwisselen. Naast Oracle OpenWorld wordt ook de JavaOne georganiseerd, internationaal trefpunt voor de Java-community. AMIS heeft de traditie om uitgebreid verslag te doen van beide conferenties. Dat doen we […]
Java
Everthing related to the Java programming language
Java EE 7: Creating a background download manager using Java Batch in GlassFish 4.0
One of the brand new specifications in Java EE 7 is JSR-352 Batch Applications for the Java Platform. This specification describes how Java EE containers will allow applications to run batch jobs in a standardized way. Such a batch job can be scheduled (to be started by the container) or […]
Getting started with Java EE 7 – Hands on in 10 minutes
Last week saw the release of Java EE 7 – the new edition of the Java Enterprise platform. It is a substantial release – which advances the Java Enterprise Platform in many areas. What this release consists of really is the following the common understanding between major stakeholders in the […]
JDeveloper code templates
When you write a lot of code, no matter what sophisticated framework you use, there are pieces of code that you end up writing over and over again (especially when using Java). Writing logging code in Java is a good example. A common pattern is to initialize a static logger […]
ADF DVT Speed Date: Interactive Bubble Graph
Recently the ADF SIG at AMIS organized an ADF DVT Speed Date. During this speed date six AMIS consultants presented their favorite DVT Component. In a series of blogposts we share the knowledge and findings. In this post you get introduced to the ADF DVT bubble graph. I will also […]
Training Oracle ADF 11g, 15 tot en met 19 april
Van 15 tot en met 19 april geeft Luc Bors de 5-daagse ADF 11g training op het kantoor van AMIS in Nieuwegein. In 5 dagen leer je de basis van Oracle ADF 11g. De training bestaat basis uit presentatie, demonstratie en hands on, doorspekt met best practices en voorbeelden uit […]
OTN Yathra 2013 – The six city Oracle tour of India
The Oracle ACE directors and Java champions are organizing an evangelist event called ‘OTNYathra 2013’ between 15th & 27th February 2013. The event is sponsored by the Oracle Technology Network. I will be one of the speakers on this tour – presenting two or three presentations at each of the […]
Dear Java/JEE developer – why should you care about ADF?
Whether you are deciding on the framework to use for your next Java web or mobile project or whether you are contemplating your next career step as a Java EE developer, ADF should be on your short list for consideration. With a new free version, deployment on many application servers […]
AMIS vat Oracle OpenWorld samen in speciale whitepaper
Als sluitstuk van de jaarlijkse Oracle OpenWorld conferentie brengt AMIS een whitepaper uit. Een handzaam document waarin het volledige verhaal van Oracle OpenWorld 2012 is gebundeld. Een team van AMIS was tijdens de conferentie in oktober nadrukkelijk aanwezig; als sponsor, deelnemer, netwerker en spreker – en als aandachtig luisteraar en […]
Build and release OSB projects with Maven
With Maven we are able to build & deploy OSB projects. The artifacts generated by Maven called snaphosts and releases can be automatically uploaded to a software repository. These versioned OSB jars can then be downloaded by the OSB Servers and deployed ( this can be a Test, Acceptance or […]
Configure FMW servers with Puppet
When you have many development servers or cloud servers which runs Oracle software and then you know that configuration management of those servers is very important and must be repeatable. When you configure and install all that software by hand, then you also know that the chance is high that […]
JavaOne 2012: Any news on the Java Caching Standard (JSR 107)?
Lucas Jellema already mentioned in his excellent overview of JavaOne 2012 that the Java Caching API (JSR 107) will be part of JEE 7. “Cool! Does that mean that this JSR (the longest running JSR ever!) is finally complete?” – No, not really. – “That’s ok, I guess the draft […]
Kom kennismaken met AMIS en doe mee met uitdagende projecten
Hierbij nodigen we je uit om met ons kennis te komen maken. Ben jij een (junior) Oracle consultant die een stap verder wil maken? Wil je verder groeien en ontwikkelen tot principal consultant? AMIS geeft je de kans om die stap te zetten. Bij ons krijg je de ruimte om […]
JavaOne 2012: The Big Stories
The show is over, the people are gone and the cleaning can start. What do we take home from JavaOne 2012? That depends on who you ask. Some people primarily will have taken goodies from the exhibition floors with them while other may have focused on less tangible goods and […]
JavaOne 2012: Strategy and Technical Keynote
JavaOne 2012 is underway. While the double entendre of ‘SUNday’ no longer exists, this first day is still an important day. To set the stage, manage expectations, build on the atmosphere and layout the roadmap (starting that sometimes not even subtle massaging of the minds). The keynote sessions are the […]
Uitnodiging: Kom kennismaken met AMIS
Hierbij nodigen we je uit om met ons kennis te komen maken. Ben jij een (junior) Oracle consultant die een stap verder wil maken? Wil je verder groeien en ontwikkelen tot principal consultant? AMIS geeft je de kans om die stap te zetten. Bij ons krijg je de ruimte om […]
Oracle RDBMS 10GR1: solution to avoid character encoding in XML with UPDATEXML
On a recent project, I ran into a problem with an XML document, that had to be enclosed within another XML document, generated from a database query. The problem I ran into was the character encoding of the XMLElement function, which eventually was worked around with UPDATEXML. In this blog […]
Dinsdag 18 september: Oracle Open World & JavaOne 2012 Preview mini-conferenties – 12 presentaties op 1 avond
Van 30 september tot 5 oktober is San Francisco weer het domein van tegen de 45.000 deelnemers aan de Oracle Open World en JavaOne conferenties. Ruim 2000 presentaties worden daar gehouden, in vele tientallen zalen in hotels en het Moscone Conferentie Center in downtown San Francisco, waaronder pakweg 20 door […]
Valuable Java, JavaScript and ADF resources
In the past few days, I have been working hard on several projects – both ADF and (plain) Java based, with quite a bit of JavaScript involved as well. The three main functional challenges: support keyboard (function key based) navigation in rich ADF Web pages (in addition to mouse based […]
Java is niet eng! introductie van Java voor PL/SQL ontwikkelaars – donderdag 5 april
Veel PL/SQL ontwikkelaars hebben (n)iets met Java. Aan de ene kant zien ze dat Java op veel plekken wordt gebruikt, binnen en buiten de Oracle technology stack. En dat kennis van Java af en toe best handig zou kunnen zijn – zeker als je als klassiek Oracle ontwikkelaar gebruik wil […]
Using Java Reflection API to clean up code and speed up development
The challenge was a simple one: my method is passed in an object. This object may or may not have a certain method – called getClientListeners(). When it does, the method should be invoked and the result from the call must be returned by my method. If the object does […]
EJB an MDB best practices on WebLogic Cluster
Recently I did an audit on a WebLogic 11g platform of one of our customers. There were many problems with the availability of their JAVA Applications. Some of the problems we’re platform related ( installation, configuration and infrastructure related) but a lot of them already existed in an earlier stage […]
Create simple Java application to post JSON message to CometD Bayeux Channel using Apache HttpClient and Maven style NetBeans project
The objective discussed in this article is to post messages to a CometD Bayeux Channel with a standalone Java Class – without dependencies on CometD. For example to control from Java the Slideshow introduced in the synchronized Slideshow demo application created using CometD (see previous articles Push based synchronized Slideshow […]
Using custom functions in EL expressions in JSF 1.x
EL expressions are one of the main driving forces for JavaServer Faces. Most dynamic characteristics of pages and widgets are governed by EL expressions. In JSF 1.x, there are some limitations for EL expressions that can at times be a little frustrating. One of the limitations is the fact that […]
Retrieve song lyrics in Java using Screenscraping with JSoup
Last year I wrote about JSoup, a Java library that helps with screenscraping: Screenscraping from Java using jsoup – effective data gathering from websites (https://technology.amis.nl/blog/13121/screenscraping-from-java-using-jsoup-effective-data-gathering-from-websites). Last month I had another opportunity for using JSoup, this time to gather song lyrics for the songs on a CD. The context in this […]
Using Java to create a report with the JasperReport java API
In this blog I will describe how to create a Report with JasperReport in Java. For this purpose I have used the Communitie edition of iReport. This edition contains besides JasperReport also iReport. iReport is a report designer for JasperReport. You can download it from http://jasperforge.org/projects/ireport After installation I started […]
Stand-alone Java Client for jWebSocket Server – communicating from Java Client to Web Clients and vice versa over WebSockets
In a previous article, I have discussed the open source jWebSocket Server and a simple installation and configuration (https://technology.amis.nl/blog/14940/first-steps-with-jwebsocket-open-source-java-framework-for-websockets-installation-and-running-samples). Subsequently, I have shown the implementation of a web client for a synchronized Slideshow application, where WebSocket communication is used to perform Client 2 Client push (https://technology.amis.nl/blog/14949/push-based-synchronized-slideshow-web-application-implemented-using-websockets-and-jwebsocket-server-the-open-source-java-websocket-server). In a third article […]
Implementing a Java Server Side component for jWebSocket Server for WebSocket interaction with Web Clients
In a previous post – https://technology.amis.nl/blog/14949/push-based-synchronized-slideshow-web-application-implemented-using-websockets-and-jwebsocket-server-the-open-source-java-websocket-server – I discussed the implementation of the synchronized slideshow application using Web (HTML/JavaScript) clients and jWebSocket as websocket server. In an earlier article, I described the same for the Kaazing WebSocket server – https://technology.amis.nl/blog/14777/push-based-synchronized-slideshow-web-application-implemented-using-websockets-and-kaazing-websocket-gateway – and both stories are (fortunately) fairly similar. In the […]
Push-based synchronized slideshow web application – implemented using WebSockets and jWebSocket server – the open source Java WebSocket server
In a recent article, I have introduced jWebSocket – an open source Java based server for WebSocket communication: https://technology.amis.nl/blog/14940/first-steps-with-jwebsocket-open-source-java-framework-for-websockets-installation-and-running-samples. In this article, I have described how to download and install the jWebSocket server and how to get going with running some of the distributed samples. In another recent article, I […]
First steps with jWebSocket – open source Java framework for WebSockets – installation and running samples
This month, In have been delving into Push architectures for the Web, looking into WebSockets among several other things. WebSockets, a fairly new standard (!) evolved along with HTML 5, specifies a communication protocol that provides an alternative to classic HTTP communication. WebSocket based interaction has lower overhead and – […]
First steps with Java Embedding in Oracle SOA Suite 11g BPEL 2.0 – useful API calls
While preparing for the next session in our internal SOA for Java Professionals training program on BPEL, I revisited the BPEL activity Java Embedding that allows us to enrich a BPEL process with custom, Java based functionality. I tried to determine how best to explain, present and demonstrate this activity […]
Push based synchronized Slideshow demo application implemented using CometD and jQuery running on Tomcat
In a string of recent articles, I have discussed downloading, installing and running demos for a number of different tools, frameworks and libraries that support push-style (web) applications in one way or another. I have looked into ‘classic’ comet with Grizzly, Atmosphere and CometD as well as ADF Active Data […]
Get going with Kaazing WebSocket Gateway – HTML5 Edition – installing locally and running demos
My last few articles on this blog site have all dealt with push architecture and technology in some way. This is an area that I have been investigating into quite bit recently. Part of these investigations had to be of course Kaazing, a specialized commercial offering, specifcally around WebSockets and […]
Push-based synchronized slideshow web application – implemented using WebSockets and Kaazing WebSocket Gateway
In the last few articles, I have discussed downloading, installing and running demos for a number of different tools, frameworks and libraries that support push-style (web) applications in one way or another. I have looked into ‘classic’ comet with Grizzly, Atmosphere and CometD as well as ADF Active Data Service […]
NetBeans 7.1 – JavaFX 2.0 support, refactoring enhancements and great Maven 3 integration
NetBeans 7.1 has just been released. It is interesting how NetBeans continues to evolve – after many doubts were raised with regard to its future after the Oracle-Sun acquisition. Oracle maintains two IDEs – each with its own objectives. JDeveloper to support Fusion Middleware development, NetBeans to propel the Java […]
Getting Atmosphere – framework for Comet style communication – up and a first sample running on Tomcat
Over the past weeks, I have been dabbling in Comet style, push-based, asynchronous communication enabling frameworks and libraries – including CometD, Atmosphere, Kaazing, jWebSocket, Grizzly and others. This short article will describe how I went about setting up Atmosphere on my local environment to the point that I could successfully […]
Running CometD 2 examples – locally on Tomcat using Maven and NetBeans
Push technologies is an area of interest to me. I have been looking into frameworks, servers and libraries such as Atmosphere, ADF ADS, CometD 2, Kaazing, jWebSockets, Grizzly and others. In my experience, even though there is a lot of information to be found through Google, it is not simple […]
Preparing your environment for modern open source Java libraries and frameworks using Git and Maven, throwing in Tomcat as a bonus
In my investigations into jWebWSockets, Kaazing, Atmosphere, CometD 2 and other frameworks I came to understand that in order to get these frameworks installed, integrate them into my custom applications or run the samples to go with these products, it would be convenient if not essential to have an environment […]
First experiences and getting started with GlassFish 3.1 and NetBeans 7.x – it's a breeze
Several years back, AMIS selected GlassFish as its preferred Open Source J(2)EE Application Server, over for example JBoss. Some of the criteria at the time were: speed of implementation of new functionality and integration of JEE (being the reference implementatoin), ease of administration, enterprise quality, small yet rapidly growing market […]
WebLogic 12c released!
At December the 1st, 2011, Oracle announced it’s new major release, the 12c release. As Oracle added the i (internet) at its 8 release, the g(gridcomputing) at its 10 release, now the focus will be on the c(cloudcomputing). Many new features come out of the fact that Oracle has made […]