java.beans.PropertyEditor implementation for standard JDK ResourceBundles.

Only supports conversion from a String, but not to a String. Find below some examples of using this class in a (properly configured) Spring container using XML-based metadata:

 <bean id="errorDialog" class="...">
   <!--
       the 'messages' property is of type java.util.ResourceBundle.
       the 'DialogMessages.properties' file exists at the root of the CLASSPATH
   -->
   <property name="messages" value="DialogMessages"/>
</bean>

 <bean id="errorDialog" class="...">
   <!--
       the 'DialogMessages.properties' file exists in the 'com/messages' package
   -->
   <property name="messages" value="com/messages/DialogMessages"/>
</bean>

A 'properly configured' Spring container might contain a org.springframework.beans.factory.config.CustomEditorConfigurer definition such that the conversion can be effected transparently:

 <bean class="org.springframework.beans.factory.config.CustomEditorConfigurer">
   <property name="customEditors">
       <map>
           <entry key="java.util.ResourceBundle">
               <bean class="org.springframework.beans.propertyeditors.ResourceBundleEditor"/>
           </entry>
       </map>
   </property>
</bean>

Please note that this java.beans.PropertyEditor is not registered by default with any of the Spring infrastructure.

Thanks to David Leal Valmana for the suggestion and initial prototype.