Configuration config;

public void onEnable() {
    config = getConfiguration();
    if (!(new File(getDataFolder(), "config.yml")).exists()) {
        defaultConfig();
    }
    loadConfig();
}

private void loadConfig() {
    config.load();
    censorChar = config.getString("censor-char", censorChar);
    censorColored = config.getBoolean("censor-colored", censorColored);
    censorColor = config.getString("censor-color", censorColor);
    chatColor = config.getString("censor-string-color", chatColor);
    censorWords = config.getStringList("censor-list", censorWords);
    chatFormat = config.getString("message-format", chatFormat);
    dateFormat = config.getString("date-format", dateFormat);
}

private void defaultConfig() {
    config.setProperty("censor-char", censorChar);
    config.setProperty("censor-colored", censorColored);
    config.setProperty("censor-color", censorColor);
    config.setProperty("censor-string-color", chatColor);
    config.setProperty("censor-list", censorWords);
    config.setProperty("message-format", chatFormat);
    config.setProperty("date-format", dateFormat);
    config.save();
}