编程技巧系列（2）Java 集合(List,Set,Map)遍历时有条件删除特定元素

//方法一 先保存符合条件的值然后遍历删除

        List<String> obeyList = new ArrayList<String>();        for (String temp : list)        {            if (temp.compareTo(currentDate) < 0)            {                obeyList.add(temp);            }        }        for (String deleteLine : obeyList)        {            list.remove(deleteLine);        }

//方法二使用迭代法

    Iterator<String> it = list.iterator();    while (it.hasNext()) {   String temp = it.next();   if (temp.compareTo(currentDate) < 0) {       it.remove();            }    }