Composite Configuration with ReloadingFileBasedConfiguration

[Avin]

I am trying to implement the Apache Configuration 2 in my codebaseimport 
java.io.File;
import java.util.concurrent.TimeUnit;

import org.apache.commons.configuration2.PropertiesConfiguration;
import org.apache.commons.configuration2.builder.ConfigurationBuilderEvent;
import 
org.apache.commons.configuration2.builder.ReloadingFileBasedConfigurationBuilder;
import org.apache.commons.configuration2.builder.fluent.Parameters;
import org.apache.commons.configuration2.convert.DefaultListDelimiterHandler;
import org.apache.commons.configuration2.event.EventListener;
import org.apache.commons.configuration2.ex.ConfigurationException;
import org.apache.commons.configuration2.reloading.PeriodicReloadingTrigger;

import org.apache.commons.configuration2.CompositeConfiguration;

public class Test {

    private static final long DELAY_MILLIS = 10 * 60 * 5;


    public static void main(String[] args) {
        // TODO Auto-generated method stub
        CompositeConfiguration compositeConfiguration = new 
CompositeConfiguration();
        PropertiesConfiguration props = null;
        try {
            props = initPropertiesConfiguration(new 
File("/tmp/DEV.properties"));
        } catch (ConfigurationException e) {
            // TODO Auto-generated catch block
            e.printStackTrace();
        }
        compositeConfiguration.addConfiguration( props );
        compositeConfiguration.addEventListener(ConfigurationBuilderEvent.ANY,
                new EventListener<ConfigurationBuilderEvent>()
                {
                    @Override
                    public void onEvent(ConfigurationBuilderEvent event)
                    {
                        System.out.println("Event:" + event);

                    }
                });

        System.out.println(compositeConfiguration.getString("property1"));

        try {
            Thread.sleep(14*1000);
        } catch (InterruptedException e) {
            // TODO Auto-generated catch block
            e.printStackTrace();
        }

        // Have a script which changes the value of property1 in DEV.properties
        System.out.println(compositeConfiguration.getString("property1"));
    }

    protected static PropertiesConfiguration initPropertiesConfiguration(File 
propsFile) throws ConfigurationException { 

        if(propsFile.exists()) {

            final 
ReloadingFileBasedConfigurationBuilder<PropertiesConfiguration> builder =
                    new 
ReloadingFileBasedConfigurationBuilder<PropertiesConfiguration>(PropertiesConfiguration.class)
                    .configure(new Parameters().fileBased()
                        .setFile(propsFile)
                        .setReloadingRefreshDelay(DELAY_MILLIS)
                        .setThrowExceptionOnMissing(false)
                        .setListDelimiterHandler(new 
DefaultListDelimiterHandler(';')));
            final PropertiesConfiguration propsConfiguration = 
builder.getConfiguration();
            PeriodicReloadingTrigger trigger = new 
PeriodicReloadingTrigger(builder.getReloadingController(),
                    null, 1, TimeUnit.SECONDS);
                trigger.start();

            return propsConfiguration;
        } else {
            return new PropertiesConfiguration();
        }

    }
}
Here is a sample code that I using to check whether the Automatic Reloading 
works or not. However when the underlying property file is updated, the 
configuration doesn't reflect it.Once the DEV.properties is updated, it doesn't 
get reflected when the compositeConfiguration.getString("property1") is called 
again.