Java中List 去掉重复的值，并保持原先List顺序

http://www.cnblogs.com/quanyongan/archive/2013/05/31/3110834.html

private List<YourBean> removeDuplicate(List<YourBean> list) {
        Set<YourBean> set = new HashSet<YourBean>();
        List<YourBean> newList = new ArrayList<YourBean>();
        for (Iterator<YourBean> iter = list.iterator(); iter.hasNext();) {
            YourBean element = (YourBean) iter.next();
            if (set.add(element))
                newList.add(element);
        }
        return newList;
    }