Public Class ConnProperties{
   private String driver;
   private String url;
   private String username;
   private String password;

   public ConnProperties(){
      setDriver(null);
      setUrl(null);
      setUsername(null);
      setPassword(null);
   }
   
   ... attribute getter and setter methods
}

Public Class ConnPropertiesInterface(){

   public ConnPropertiesInterface(){
      super();
   }

   public ConnProperties getProperties(String appID){
      ConnProperties connProps = new ConnProperties();

      ... Get Connection Properties from configuration file based on
      ... appID, update ConnProperties object with returned
      ... values such as
   
      connProps.setDriver(result.getString("driver"));
      connProps.setUrl(result.getString("url");

      return connProps;
   }
}