exception

问题 This question already has answers here : Rethrowing an Exception: Why does the method compile without a throws clause? (6 answers) Closed 3 years ago . I came across a weird scenario in java today while coding around. I have a try..catch block in my method which does not have any throws clause and I am able to throw the exception object caught in the catch block. It is an object of the Exception class, hence it is not an unchecked exception. Also, It is not printing the stacktrace if

问题 Consider the code auto p = new T( U(std::move(v)) ); The initializer is then U(std::move(v)) . Let's assume that T( U(std::move(v)) ) does not throw. If the initializer is evaluated after the underlying memory allocation, the code is then strong-exception-safe. Otherwise, it is not. Had memory allocation thrown, v would have already been moved. I'm therefore interested in the relative order between memory allocation and initializer evaluation. Is it defined, unspecified, or what? 回答1: Yes,

问题 A friend mentioned that with Python 2, (assuming you have it on your path environment variable, on the commandline) $ pydoc exceptions is very useful and knowing it should save him a few minutes of web lookup time a week. I Google the exceptions hierarchy about once a week myself, so this was a helpful reminder for me as well. It is the same documentation that you get with >>> import exceptions >>> help(exceptions) in Python 2, because pydoc uses the exceptions module to provide the online

问题 I was playing around with coroutines and found some very strange behavior. I want to convert some asynchronous requests in my project using suspendCoroutine() . Here's piece of code showing this problem. In first case, when suspend function is being called in runBlocking coroutine, exception from continuation goes to catch block, and then runBlocking finishes successfully. But in second case, when creating new async coroutine, exception goes through catch block and crashes the whole program.

问题 The following code produces an EOFException . Why is that? public static Info readInfoDataFromFile(Context context) { Info InfoData = null; FileInputStream fis = null; ObjectInputStream ois = null; Object object = null; if (context.getFileStreamPath("InfoFile.dat").exists()) { try { fis = context.openFileInput("InfoFile.dat"); ois = new ObjectInputStream(fis); Object temp; try { // here it throws EOF exception in while loop while ((temp = ois.readObject()) != null) { object = temp; } } catch

问题 When I'm compiling my project it gives this error and stop compiling org.springframework.beans.factory.BeanDefinitionStoreException: Unexpected exception parsing XML document from ServletContext resource [/WEB-INF/application-context.xml]; nested exception is java.lang.IllegalArgumentException: At least one base package must be specified Why this exception happen and How I solve it. 回答1: As per Spring Doc Spring provides the capability of automatically detecting 'stereotyped' classes and

问题 I am updating and Id of the table and its references in all its child tables. But while committing the transaction I got following error. I tried searching but not found any related solutions I am not using spring @transactional. Here I am manually beginning and committing the transactions. Also, I didn't face this issue when I executed the same code for fewer records as 5 to 10 . But this time I am executing for 11K. public void updateAllCustWithSameCustIdAndAccNum() { EntityManager em =

问题 I am updating and Id of the table and its references in all its child tables. But while committing the transaction I got following error. I tried searching but not found any related solutions I am not using spring @transactional. Here I am manually beginning and committing the transactions. Also, I didn't face this issue when I executed the same code for fewer records as 5 to 10 . But this time I am executing for 11K. public void updateAllCustWithSameCustIdAndAccNum() { EntityManager em =

问题 I am updating and Id of the table and its references in all its child tables. But while committing the transaction I got following error. I tried searching but not found any related solutions I am not using spring @transactional. Here I am manually beginning and committing the transactions. Also, I didn't face this issue when I executed the same code for fewer records as 5 to 10 . But this time I am executing for 11K. public void updateAllCustWithSameCustIdAndAccNum() { EntityManager em =

问题 I am experiencing really annoying problems trying to handle all unhandled exceptions in a Winforms application. [STAThread] [HandleProcessCorruptedStateExceptions] private static void Main() { Application.EnableVisualStyles(); Application.SetCompatibleTextRenderingDefault(false); Application.ThreadException += ApplicationOnThreadException; AppDomain.CurrentDomain.UnhandledException += CurrentDomainOnUnhandledException; TaskScheduler.UnobservedTaskException +=