java - Android未处理的异常错误

我试图弄清楚这一点，所以我有一个方法正在调用count（）方法，该方法应该抛出异常

count（）方法

public int count() throws ParseException {
  return something that may throw the ParseException
}

然后从这里打电话

ParseQuery<ParseObject> query = ParseQuery.getQuery(className);
query.fromLocalDatastore();

int result = 0;

try {
   result = query.count();
} catch (ParseException e) {
   result = 0;
}

return result;

现在，我一直在尝试不同的方案，但是无论IDE是否仍未编译，都会出现以下错误

Error:(254, 11) error: exception ParseException is never thrown in body of corresponding try statement

Error:(253, 33) error: unreported exception ParseException; must be caught or declared to be thrown

在行result = query.count（）;

我不知道我在做什么错，谢谢您的帮助

最佳答案

您无法捕获try块永远不会抛出的异常，提示错误

try {
   result = query.count(); // this statement not throwing ParseException
} catch (ParseException e) { // you are trying to catch ParseException that never gonna throw.
   result = 0;
}

它像是

    try {
           .... code // throws ExceptionA
        }
    catch (ExceptionB e) { // and calling ExceptionB

        }