Configuration file

Config.java

public class Config extends YamlConfiguration {
    private final File file;
    
    public Config(String name) 
        throws IOException, InvalidConfigurationException {
        this.file = new File(name);
        load(file);
        loadDefaults(file.toPath());
    }
    
    public Config(Plugin plugin, File file) 
        throws IOException, InvalidConfigurationException {
        this.file = file;
        load(file);
        Path base = plugin.getDataFolder().toPath();
        loadDefaults(base.relativize(file.toPath()).normalize());
    }
    
    private void loadDefaults(Path path) throws IOException {
        Path rel = path.normalize();
        ClassLoader cl = getClass().getClassLoader();
        try (InputStream defaultFile = cl.getResourceAsStream(rel.toString());
             Reader reader = fromInput(defaultFile, StandardCharsets.UTF_8)) {
            if (reader == null) {
                return;
            }
            
            setDefaults(YamlConfiguration.loadConfiguration(reader));
        }
    }
    
    private static Reader fromInput(InputStream in, Charset encoding) {
        return in == null ? null : new InputStreamReader(in, encoding);
    }
    
    public void reload() throws IOException, InvalidConfigurationException {
        load(file);
    }
    
    public void save() throws IOException {
        save(file);
    }
}