class LazySingleton {
  // singleton instance
  private static LazySingleton lazySingleton = null;

  /**
   * private constructor so that other classes can't
   * instantiate it through constructor
   */
  private LazySingleton() {
    // all initialization steps go here
  }

  public static LazySingleton getInstance() {
    if(lazySingleton == null) {
      lazySingleton = new LazySingleton();
    }
    return lazySingleton;
  }

}