Java 移除列表中特定索引处的元素时获取UnsupportedOperationException<；列表<；字符串>>；？

我有

列表

这样的数据

List<List<String>> repdata = [
    ["1185","R","4t","G","06","L","GT","04309","2546","2015","CF FE","01H1","20","23840","FF20"],
    ["1192","R","11t","H","06","L","SA","04772","8345","2015","BZ C8 FE","01D6","13","33390","LC13"]]

List<List<String>> repdata = [
["1185","R","4t","G","06","L","GT","04309","2546","2015","CF FE","01H1","FF20","23840"],
["1192","R","11t","H","06","L","SA","04772","8345","2015","BZ C8 FE","01D6","13","33390"]

criteria.setResultTransformer(Transformers.TO_LIST);

List<List<String>> repdata = cr.list();
        for( List<String> list: repdata ){
            if( list.size() > 14){                              
                list.remove(14);
            }           
        }

我想删除FF20

这必须对

列表repdata

中的所有内部列表重复

所以，我最后的

列表是这样的

List<List<String>> repdata = [
    ["1185","R","4t","G","06","L","GT","04309","2546","2015","CF FE","01H1","20","23840","FF20"],
    ["1192","R","11t","H","06","L","SA","04772","8345","2015","BZ C8 FE","01D6","13","33390","LC13"]]

List<List<String>> repdata = [
["1185","R","4t","G","06","L","GT","04309","2546","2015","CF FE","01H1","FF20","23840"],
["1192","R","11t","H","06","L","SA","04772","8345","2015","BZ C8 FE","01D6","13","33390"]

criteria.setResultTransformer(Transformers.TO_LIST);

List<List<String>> repdata = cr.list();
        for( List<String> list: repdata ){
            if( list.size() > 14){                              
                list.remove(14);
            }           
        }

我厌倦了这样搬家

List<List<String>> repdata = [
    ["1185","R","4t","G","06","L","GT","04309","2546","2015","CF FE","01H1","20","23840","FF20"],
    ["1192","R","11t","H","06","L","SA","04772","8345","2015","BZ C8 FE","01D6","13","33390","LC13"]]

List<List<String>> repdata = [
["1185","R","4t","G","06","L","GT","04309","2546","2015","CF FE","01H1","FF20","23840"],
["1192","R","11t","H","06","L","SA","04772","8345","2015","BZ C8 FE","01D6","13","33390"]

criteria.setResultTransformer(Transformers.TO_LIST);

List<List<String>> repdata = cr.list();
        for( List<String> list: repdata ){
            if( list.size() > 14){                              
                list.remove(14);
            }           
        }

List repdata=cr.List（）；
用于（列表：repdata）{
如果（list.size（）>14）{
名单.删除（14）；
}           
}

但我不断收到
不支持的操作异常

有人能帮我解决这个问题吗？
虽然我没有足够的可用信息，但我怀疑返回的列表可能是固定大小的（或者以其他方式无法修改）。一个例子是我们从
数组中得到的列表。asList
无法向其中添加/删除任何内容。我们无法从结构上修改此列表

解决方案可能是使用当前列表中的项初始化列表实现。LinkedList支持更快的删除，可能比较合适。比如：

List<String> list = new LinkedList<String>(Arrays.asList(your_list));

List List=newlinkedlist（Arrays.asList（your_List））；

如果符合您的要求，您也可以使用
ArrayList
。
我们不应该使用列表的删除方法。相反，使用迭代器和迭代器自己的remove方法遍历它是有用的。因为在使用list的remove方法时，将抛出ConcurrentModificationException
 是否有可能
cr.list（）
返回一个无法修改的固定大小列表？我怀疑
Criteria#list
返回一个不可修改的
列表
，例如，通过
集合#不可修改列表
获取。有关如何创建
列表
的深度副本的说明，请参阅。for循环和删除是一个不好的组合。请使用迭代器或其他在
repdata.getClass（）
print中提到的东西？以及
list.getClass（）
。这应该给你们一个线索。是的，当然，我只能编辑它。。有没有其他方法可以移除它在这种情况下，您需要将元素复制到新的ArrayList（或任何其他实现）中，然后才能删除。