sclass SynchronizedList<E> extends SynchronizedCollection<E> implements List<E> {

  final List<E> list;

  SynchronizedList(List<E> list) {

      super(list);

      this.list = list;

  }

  SynchronizedList(List<E> list, Object mutex) {

      super(list, mutex);

      this.list = list;

  }

  public boolean equals(Object o) {

      if (this == o)

          return true;

      synchronized (mutex) {return list.equals(o);}

  }

  public int hashCode() {

      synchronized (mutex) {return list.hashCode();}

  }

  public E get(int index) {

      synchronized (mutex) {return list.get(index);}

  }

  public E set(int index, E element) {

      synchronized (mutex) {return list.set(index, element);}

  }

  public void add(int index, E element) {

      synchronized (mutex) {list.add(index, element);}

  }

  public E remove(int index) {

      synchronized (mutex) {return list.remove(index);}

  }

  public int indexOf(Object o) {

      synchronized (mutex) {return list.indexOf(o);}

  }

  public int lastIndexOf(Object o) {

      synchronized (mutex) {return list.lastIndexOf(o);}

  }

  public boolean addAll(int index, Collection<? extends E> c) {

      synchronized (mutex) {return list.addAll(index, c);}

  }

  public ListIterator<E> listIterator() {

      return list.listIterator(); // Must be manually synched by user

  }

  public ListIterator<E> listIterator(int index) {

      return list.listIterator(index); // Must be manually synched by user

  }

  public List<E> subList(int fromIndex, int toIndex) {

      synchronized (mutex) {

          return new SynchronizedList<>(list.subList(fromIndex, toIndex),

                                      mutex);

      }

  }

  /*public void replaceAll(UnaryOperator<E> operator) {

      synchronized (mutex) {list.replaceAll(operator);}

  }*/

  public void sort(Comparator<? super E> c) {

      synchronized (mutex) {list.sort(c);}

  }

}