两个集合删除相同对象，删除报错

Question

//部分上线省份
List orgaList = orgaService.getSubOrgaListByCode(billCycle);
// 全部省分
List orgaListAll = orgaService.getSubOrgaListByCodeALL(jgCode);
//遍历得到未上线省份
for (Orga orga : orgaList) {
for (Orga orgaAll : orgaListAll) {
String codeALL = orgaAll.getCode();
String code = orga.getCode();
if (codeALL.equals(code)) {
orgaListAll.remove(orgaAll);
}
}
}

    遍历的时候会出错。java.util.ConcurrentModificationException
    Orga对象里面有一个code  和name字段

Answer 1

//遍历得到未上线省份
for (Orga orga : orgaList) {
for (int i = orgaListAll.saiz()-1;i--) {
Orga orgaAll = orgaListAll.get(i);
String codeALL = orgaAll.getCode();
String code = orga.getCode();
if (codeALL.equals(code)) {
orgaListAll.remove(orgaAll);
}
}
}