我有以下代码,我希望它能成功运行直到完成,但代码在“fail("thisshouldnotbereached");”行失败。有人可以解释为什么不调用默认的未捕获异常处理程序吗:publicclassUncaughtExceptionTestextendsTestCaseimplementsUncaughtExceptionHandler{privatefinalListuncaughtExceptions=newCopyOnWriteArrayList();classUncaughtExceptionTestInnerClassimplementsRunnable{privatefin