Getting Started with Apache Commons Configuration 2

import java.io.File;
import java.util.Iterator;
import java.util.List;

import org.apache.commons.configuration2.PropertiesConfiguration;
import org.apache.commons.configuration2.builder.FileBasedConfigurationBuilder;
import org.apache.commons.configuration2.builder.fluent.Parameters;
import org.apache.commons.configuration2.builder.fluent.PropertiesBuilderParameters;
import org.apache.commons.configuration2.convert.DefaultListDelimiterHandler;
import org.apache.commons.configuration2.convert.ListDelimiterHandler;
import org.apache.commons.configuration2.ex.ConfigurationException;

public class HelloCommonsConfiguration {
 
 public void basicConfiguration() {

  File file = new File("index.properties");
  ListDelimiterHandler delimiter = new DefaultListDelimiterHandler(',');

  PropertiesBuilderParameters propertyParameters = new Parameters().properties();
  propertyParameters.setFile(file);
  propertyParameters.setThrowExceptionOnMissing(true);
  propertyParameters.setListDelimiterHandler(delimiter);

  FileBasedConfigurationBuilder<PropertiesConfiguration> builder = new FileBasedConfigurationBuilder<PropertiesConfiguration>(PropertiesConfiguration.class);

  builder.configure(propertyParameters);

  try {
   PropertiesConfiguration config = builder.getConfiguration();
   List<Object> hobbies = config.getList("test.1.hobbies");

   for (Object hobby : hobbies)
    System.out.println(hobby);

   Iterator<String> keys = config.getKeys();
   while (keys.hasNext())
    System.out.println(keys.next());
  } catch (ConfigurationException e) {
   e.printStackTrace();
  }
 }
}

<dependency>
 <groupId>org.apache.commons</groupId>
 <artifactId>commons-configuration2</artifactId>
 <version>2.1.1</version>
</dependency>

<dependency>
 <groupId>commons-beanutils</groupId>
 <artifactId>commons-beanutils</artifactId>
 <version>1.9.3</version>
</dependency>