Help with YAML

Well I'm not exactly sure how to make a config with YAML.... So far I have...

Code:

public class Sunscreen extends JavaPlugin{
    static String mainDirectory = "plugins/Sunscreen";
    File file = new File(mainDirectory + File.separator + "config.yml");
    private static final Logger log = Logger.getLogger("Minecraft");
    private final ssEntityListener entityListener = new ssEntityListener (this);
    public void onEnable(){
        PluginManager pm = getServer().getPluginManager();
        pm.registerEvent(Event.Type.CREATURE_SPAWN, entityListener,
                Event.Priority.Normal, this);
        pm.registerEvent(Event.Type.ENTITY_COMBUST, entityListener,
                Event.Priority.Normal, this);
        log.info("Sunscreen Enabled. Sun-Screening Mobs...");

    }
    public void onDisable() {
        log.info("Suncreen Disabled, aww.");

    }
    public Configuration load(){

        try {
            Configuration config = new Configuration(file);
            config.load();
            return config;

        } catch (Exception e) {
            e.printStackTrace();
        }

        new File(mainDirectory).mkdir();

        if(!file.exists()){
            try {
                file.createNewFile();
            } catch (Exception ex) {
                ex.printStackTrace();
            }
        } else {

        }
        return null;

    }
    public void write(String root, Object x){
        Configuration config = load();
        config.setProperty(root, x);
        config.save();

    }
    public String read(String root){
        Configuration config = load();
        return config.getString(root);

    }
}

What goes under the }else{ ?

 

first off, why are you making the file after one possible return and after a trying clause, it just doesn't make sense to me to keep going on the code like that, I personally think the is(!file.exists()) blah should go before trying to make a config file with it