Tech

There is still the urban myth that using Spring IoC container without thousands lines of XML code isn’t possible – so today we’re taking a look at annotation based configuration with Spring 3 and of course we’re using Maven.. Setup your project Create a simple Maven project using mvn archetype:generate // or mvn archetype:create Add a lot of dependencies and reference them to the Spring version defined as a property in your pom.xml. A good reference on Spring 3 and Maven artifacts can be found at Springsource.com <properties> <org.springframework.version>3.0.0.RELEASE</org.springframework.version> </properties> <dependencies> <dependency> <groupId>org.springframework</groupId> <artifactId>spring-core</artifactId> <version>${org.springframework.version}</version> </dependency> <dependency> <groupId>org.springframework</groupId> <artifactId>spring-expression</artifactId> <version>${org.springframework.version}</version> </dependency> <dependency> <groupId>org.springframework</groupId> <artifactId>spring-beans</artifactId> <version>${org.springframework.version}</version> </dependency> <dependency> <groupId>org.springframework</groupId> <artifactId>spring-aop</artifactId> <version>${org.springframework.version}</version> </dependency> <dependency> <groupId>org.springframework</groupId> <artifactId>spring-context</artifactId> <version>${org.springframework.version}</version> </dependency> <dependency> <groupId>org.springframework</groupId> <artifactId>spring-context-support</artifactId> <version>${org.springframework.version}</version> </dependency> <dependency> <groupId>org.aspectj</groupId> <artifactId>com.springsource.org.aspectj.runtime</artifactId> <version>1.6.8.RELEASE</version> </dependency> </dependencies> ...

Today we’re going to take a look at Google’s App Inventor feature that offers programming-novices a nice possibility to enter the fabulous world of Android App programming without deeper knowledge of the API or complex SDK installations. So lets build some stuff .. Prerequisites Java 6 JDK App Inventors Extras Software A Google App Inventor Beta Account – request one here What we are going to build We are building a simple GUI with a Textbox and a button A click on the button starts an event that queries the acceleration sensor for coordinates If the sensor is active and enabled then the coordinates are displayed in the text box ...

In this tutorial we will take a look at the development of a simple OSGi Web Application and what tools can save us some time. The Maven Bundle Plugin makes our life much easier here as does the OSGi Bundle Repository that offers some nice bundles – in our case the servlet API and an embedded Jetty web server. So lets develop some bundles .. Prerequisites You are going to need a JDK (>=5), Maven2, the Apache Felix OSGi implementation and and text editor/http://eclipse.org/[IDE] of your choice. ...

Since Confluence 3.2. there is a new plugin module type that allows you to deploy templates in a bundle via the plugin API. In addition it is possible to assign these templates to specific spaces and preview available templates in the Confluence administration area. So let’s build some sample templates.. Creating a Template Bundle Plugin Creating a template bundle is easy – just create a class implementing TemplatePackage – there are two methods: one returns a list of bundled PageTemplate Objects the other the name for the template bundle. ...

Protocol Buffers are a serialization format developed by Google- you might ask if another IDL is really needed here – is Google barking at the wrong tree? But protocol buffers offer some advantages over data serialization via XML or JSON – Google says they (compared to XML).. are 3 to 10 times smaller are 20 to 100 times faster provide generated data access classes for programmatic use provide backward compatibility ...

In this short tutorial we are going to build a Java Server Faces Web-Application using JSF2.0, Facelets, Maven and Hibernate as ORM Mapper. The goals for this first step are: Setting up the project structure using Maven, defining a frame template/decorator and a registration facelet, creating a managed bean and mapping it’s values to the facelet, adding some basic validation, displaying validation errors and finally adding a navigation structure. In step2 of this tutorial we are going to add persistence using Hibernate, add some security, create a custom UI component and add some AJAX. ...

The Android SDK offers a nice API to receive information about available providers for location based services and get the current location and coordinates. In this short tutorial we’re going to build a small activity that displays a list of available location providers and shows the current position using GPS services. Example Application Create a new Android Project using ADT and your IDE with a package named com.hascode.android.location_app Add the permissions needed to the AndroidManifest.xml – it should look like this <?xml version="1.0" encoding="utf-8"?> <manifest xmlns:android="http://schemas.android.com/apk/res/android" package="com.hascode.android.location_app" android:versionCode="1" android:versionName="1.0"> <application android:icon="@drawable/icon" android:label="@string/app_name"> <activity android:name=".LocationActivity" android:label="@string/app_name"> <intent-filter> <action android:name="android.intent.action.MAIN" /> <category android:name="android.intent.category.LAUNCHER" /> </intent-filter> </activity> </application> <uses-sdk android:minSdkVersion="7" /> <uses-permission android:name="android.permission.ACCESS_COARSE_LOCATION"></uses-permission> <uses-permission android:name="android.permission.ACCESS_FINE_LOCATION"></uses-permission> <uses-permission android:name="android.permission.ACCESS_LOCATION_EXTRA_COMMANDS"></uses-permission> <uses-permission android:name="android.permission.ACCESS_MOCK_LOCATION"></uses-permission> </manifest> ...

Short Facts: About 850 pages – heavy weight – use it for self defence! ;) Preparation material for the Sun Exam 310-065 (Sun Certified Java Programmer for Java SE 6) CD-Rom with a nice exam simulator included Authors: Kathy Sierry and Bert Bates ISBN: 978-0071591065 My two cents: My favorite author team strikes back – this time with a book for the certification exam to become a glorious “http://in.sun.com/training/certification/java/scjp.xml[Sun Certified Java Programmer]” for Java SE 6. I’ve read some other books from both authors before – especially from the “http://headfirstlabs.com/[Head First]” series from O’Reilly as they are “Head First Design Patterns”, “Head First Servlets and JSP” and last and least “Head First EJB”. Perhaps I am going to write a review for one of those, too – who knows.. ...

Sometimes I get the impression that there are many Maven haters in the Groovy/Grails community – now with version 1.2 of the Grails framework they are able to abandon the evil satanic Grails Maven Plugin and embrace the neverending joys of a slim, nice, sexy dependency resolution dsl .. here we go .. lets define some dependencies wheee … Our dependency configuration is defined in grails-app/config/BuildConfig.groovy as a property named grails.project.dependency.resolution: grails.project.dependency.resolution = { // here will be some dependencies } ...

Developing plugins for the Confluence Wiki a developer sometimes needs to save additional metadata to a page object using Bandana or the ContentPropertyManager. Wouldn’t it be nice if this metadata was available in the built-in Lucene index? That is were the Confluence Extractor Module comes into play.. Overview An extractor allows the developer to add new fields to the lucene search index. Creating a new extractor is quite simple – just implement the interface com.atlassian.bonnie.search.Extractor or bucket.search.lucene.extractor.BaseAttachmentContentExtractor if you want to build a new file extractor. ...