java - 类型不匹配 : cannot convert from element type Object to List

Question

我收到此错误:“类型不匹配:无法从“subLists”中的元素类型对象转换为列表”“并且类型不匹配:无法从元素类型对象转换为字符串” 在 “accList”

代码:

ArrayList subLists = new ArrayList();

for (List accList : subLists) {
        service.submit(() -> {
            for (String account : accList) {
                accounts.remove(account);
                String[] split = account.split(":");
                String email = split[0];
                String password = split[1];
                AuthResult result = null;

Answer 1

您没有指定不同 lists 中的对象类型，你需要，程序不会猜测:

List<List<String>> subLists = new ArrayList<>();  

for (List<String> accList : subLists) {
    service.submit(() -> {
        for (String account : accList) {
// ...

另外，最好使用Interfaces比Implementations存储变量，更容易更新( List<List<String>> rather than ArrayList<List<String>>