修改获取ConcurrentModificationException的列表映射

Question

嗨,我正在创建两个列表来保存好的和坏的数据值.我将这些列表传递给一个方法,在这个方法中我向goodMap添加一个新的键值,检查记录上的一些条件是否不好然后将该记录添加到坏文件并将其从好文件中删除,但我收到oncurrentModificationException while这样做.我该如何解决？

伪代码

    //original Lists of users
    List<Map<Object, Object>> _goodFile
    List<Map<Object, Object>> _badFile

    //tempList to hold return value
    List<Object> _tempList=new ArrayList<Object>(1);



    //call the method
    _tempList=cleanMap(_goodFile,_badFile)

     //assign the values back to original list
    _goodFile=_tempList.get(0);
    _badFile=tempList.get(1);


    //this is the method for cleaning

    public List<Object> cleanMap ( List<Map<Object, Object>> _temp1, List<Map<Object, Object>> _temp2)

    {

//return List

 List<Object> _returnList =new ArrayList<Object>(1);


for (Iterator<Map<Object, Object>> i = _temp1
                    .iterator(); i.hasNext();) 

            {
    Map<Object, Object> _Record = i.next();

     //first add a new key value pair to goodFile map
    _Record.put("Key","value");

    // check for condition; if it is bad remove from list

    if (bad)
    {
    //first add in bad file
    _temp2.add(_Record);

    //then remove from good file
    _temp1.remove(_Record);
    }

             }

return _returnList;

    }

Answer 1

而不是这样做:

_temp1.remove(_Record);

试着这样做:

i.remove();

请参阅Iterator.remove的javadoc .