Archive for the tag 'Java'

Jan 17 2010

Use Generators to create boilerplate code in GWT 2.0

google web toolkit

Table of contents

Technorati Tags: annotation, boilerplate code, eclipse, field, generate, generators, gwt 2.0, Java, label, labelfieldgenerator, printwriter, textbox, textfieldgenerator

11 responses so far

Okt 15 2009

Solve the circular reference problem with Guice and Spring

Published by under Guice,Spring


The problem

Just imagine you run into a case where two objects are dependent on each other. The following picture and code snippet shows one such relationship.

Technorati Tags: circular reference dependencies, google guice, Java, Spring

2 responses so far

Jan 30 2009

Create Flex Applications with NetBeans 6.5 and FlexBean

Published by under adobe flex,NetBeans

In this Blog i will show you how to develop Adobe Flex Applications with the NetBeans 6.5 IDE. The used plugin FlexBean is still under development by Arnaud Vincent . Many features are missing in the Version 1.0.1 used in this Blog, for example syntax highlighting and a GUI-Designer.

Please note:
I have contributed this blog to the NetBeans Community.

Table of contents

Technorati Tags: adobe, flex, flexbean, Java, NetBeans, servlet

24 responses so far

Okt 22 2008

Useful books for learning SAP NetWeaver

Published by under SAP

On my stressful way learning how to be a great SAP NetWeaver Developer, i am reading many books and online-tutorials. In this blog i want to show you some good books which i recommend. All books are available in German too.

Technorati Tags: abap, adobe flex, books, Java, netweaver, nwds, portal, SAP, sap press, visual composer, web dynpro, xapps

3 responses so far

Jul 22 2008

Using Spring and Facelets together with NetBeans 6.1

In this blog you can read how to create a Web Application with NetBeans 6.1 and the GlassFish 2 Application Server. This Web Application is using Facelets, MyFaces 1.2 and the Spring 2 technologies.

Please note:
I have contributed this blog to the NetBeans Community.


First update your NetBeans 6.1 to the newest version (currently it is Build 200804211638).

NetBeans Version 6.1 Build 200804211638

Install the Facelets Support Modules and restart NetBeans.

Create a new Web Application

Create a new Web Application, name it “Spring_and_Facelets“.

create a new Web Application

Choose GlassFish v2 as Server and click next.

choose GlassFish 2 as Server

In the last step, activate the Facelets-Framework.

choose the Facelets Framework

Open the Project Properties and remove all libraries.

remove libraries

Download and add my special MyFaces and Facelets Libraries Collection to the project.

special facelets and myfaces collection

Build and run the application. You should see this in your browser:

running facelets application

Adding some Facelets functionality

It is now time to add some specific Facelets functionality to this small Web Application. First we create a new facelets file, name it “header“.

create a new facelets file

the header.xhtml file

Insert this HTML code into the file:


Technorati Tags: Facelets, GlassFish, Java, MyFaces, NetBeans, Spring

3 responses so far

Jul 06 2008

Access the Spring-ApplicationContext from everywhere in your Application

Published by under Java,Spring

In this blog i will show you a short hint how you can access your Spring-ApplicationContext from everywhere in your Application.

Imagine you have an application (e.g. a web or swing-application) which you now want to be Spring-enabled. Ok you add the Spring libraries and the Configuration-file and create your Spring-beans. But there are still some old class-files which you can’t use in this way. These files still need access to the Spring-Honeypot where all the goodies exists and you don’t want to redesign your application.

First create the class “ApplicationContextProvider“. This class implements the ApplicationContextAware. A bean which implements the ApplicationContextAware-interface and is deployed into the context, will be called back on creation of the bean, using the interface’s setApplicationContext(…) method, and provided with a reference to the context, which may be stored for later interaction with the context.

Technorati Tags: ApplicationContext, Java, Spring

76 responses so far

Jun 29 2008

Contract First Web Services with Spring 2 and JAX-WS

This short blog entry will show you how easily you can integrate JAX-WS into a Spring 2 Project. The example sourcecode is depending on my previous blog How to modify JAX-WS SOAP-Messages and i am using NetBeans 6.1.


Download the JAX-WS commons and XBean.

Transform the SOAP Web Services Project into a Spring Project

First open the Non-Spring-Project “How to modify JAX-WS SOAP-Messages“, switch to the project-properties and add the XBean, JAX-WS commons and Spring Framework 2.5 JAR-files.

add jar files to netbeans project

You can see in this picture which JAR-files have to be included in the project:

jar files in the netbeans project

Now you have to create the Spring Configuration file. Create the new XML-file: /WEB-INF/applicationContext.xml. If you are using NetBeans 6.1, navigate to File->New File->Spring Framework->Spring XML Configuration File.

create a new spring configuration file in netbeans 6.1

Replace the content with this:


Technorati Tags: Java, jax-ws, NetBeans, soap, soaphandler, Spring, web services

4 responses so far

Mai 23 2008

Facelets Support Modules for NetBeans 6.1

I have build manually the Facelets Support Modules for NetBeans 6.1. You can download them here:

To install the Modules, navigate in NetBeans to Tools -> Plugins -> Downloaded, hit Add Plugins and choose the modules. Click on Install to start the installation.

Facelets Support Modules for NetBeans 6.1

Technorati Tags: facelets support, Java, NetBeans

5 responses so far

Mai 14 2008

Create CRUD-Mashups rapidly with Naked Objects and NetBeans

In this blog i will show how easy and fast you can create Database-Mashups with full CRUD support, using Naked Objects.

Naked Objects is an open source Java-based application development platform which can use a transient (fake) or a real existing database. Support for Hibernate is included, so you can connect to every supported database.
Naked Objects also generates HTML and Window(DND) -Interfaces which are both

Download-links to all files are available at the end of this blog-entry.


Download the Naked Objects Framework and extract the included JAR-files from the directory “/lib“.

Naked Objects JAR files

Create the prototype

Create a new simple Java Application, name it “NakedObjectsDNDapp” and disable
the field “Create Main Class“. Naked Objects is using a specific class.

Naded Objects - create new java application

Open the project-properties and add the extracted JAR-files to the project.

Naked Objects - project properties

Switch to the category “run” and write in the field “Main Class“:

Technorati Tags: CRUD, HSQLDB, Java, Mashup, Naked Objects, NetBeans

6 responses so far

Apr 09 2008

Create reverse Ajax Web-Applications with DWR and NetBeans

This blog was submitted to the NetBeans IDE 6.1 Beta Blogging Contest.

In this blog you can read how to create a (very simple) reverse Ajax Web-Application, using NetBeans 6.1 BETA and running on GlassFish v2 (YES – i like new technologies!). This example is also working with previous NetBeans versions and Apache Tomcat 6.

Download-links to all files are available at the end of this blog-entry.


To work with this example you need an installed NetBeans 6.1 BETA (as above mentioned, older versions are working too) with included GlassFish v2 and the DWR-Jar’s (included in the Example-archive). If you don’t want to create this example from scratch, you can open it with NetBeans and run it immediately. You can read in my other blog how to open an existing NetBeans project.


There are many reverse Ajax Frameworks like COMETd and Pushlets which have the ability to push data from the Web Server to the Client (Browser). This effect is similar to applications using traditional Ajax with polling to detect new information on the server.

DWR, or Direct Web Remoting, is a Java open source library which helps developers write web sites that include Ajax technology. It allows code in a web browser to use Java functions running on a web server as if those functions were within the browser.

Direct Web Remoting diagram

DWR consists of two main parts:

Technorati Tags: Ajax, dwr, GlassFish, Java, NetBeans

20 responses so far

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