exception

问题 This code must validate input data from the findActions() method: try { System.out.println(findActions(lookingArea.substring(0, right)));// always printing valid number string Integer.parseInt(findActions(lookingArea.substring(0, right)));// checking for number format } catch(NumberFormatException exc) { System.out.println(exc); } But I always have java.lang.NumberFormatException: For input string: "*number*" that is so strange, because checking with System.out.println(findActions(lookingArea

问题 A few of my methods in Java throw exceptions such as NoSuchElementException, IllegalArgumentException, etc. But when using these methods, these exceptions appear to be unchecked. In other words, caller of my methods is not required to do a try/catch on my methods that throw those exceptions. I read around it seems that Exceptions by default are "checked" and only Errors are the ones "unchecked". But somehow, the exceptions I throw are also unchecked. It is weird. How can I ensure that when my

问题 A few of my methods in Java throw exceptions such as NoSuchElementException, IllegalArgumentException, etc. But when using these methods, these exceptions appear to be unchecked. In other words, caller of my methods is not required to do a try/catch on my methods that throw those exceptions. I read around it seems that Exceptions by default are "checked" and only Errors are the ones "unchecked". But somehow, the exceptions I throw are also unchecked. It is weird. How can I ensure that when my

问题 In PowerShell, what is the difference between throw $ErrorMsg and $PScmdlet.ThrowTerminatingError($ErrorMsg) ? Are they same or different? If they are different which one is preferable? 回答1: Throw creates a script -terminating (runspace-terminating) error , whereas $PScmdlet.ThrowTerminatingError() creates a statement -terminating error . Note: These aren't official terms (the docs currently only vaguely reference terminating errors in the abstract, without scope), but they're useful for

问题 I'm trying to catch all unhandled exceptions in a Flutter app so I can sent it to a crash reporter. There are instructions on how to do this in the Flutter docs. I followed those, and added two bits of code to my app to catch exceptions: Catch Dart errors by wrapping runApp in runZoned : runZoned<Future<void>>( () async { runApp(MyApp()); }, onError: (dynamic error, StackTrace stackTrace) { print("=================== CAUGHT DART ERROR"); // Send report }, ); Catch flutter errors by setting

问题 I'm trying to catch all unhandled exceptions in a Flutter app so I can sent it to a crash reporter. There are instructions on how to do this in the Flutter docs. I followed those, and added two bits of code to my app to catch exceptions: Catch Dart errors by wrapping runApp in runZoned : runZoned<Future<void>>( () async { runApp(MyApp()); }, onError: (dynamic error, StackTrace stackTrace) { print("=================== CAUGHT DART ERROR"); // Send report }, ); Catch flutter errors by setting

问题 When compiling an executable in Release mode -with code optimizations enabled- the compiler may opt to inline functions that meet certain criteria in order to improve performance. My question is this: when an exception is thrown in the body of a function that has been inlined, will the stacktrace information be preserved regardless of the inline expansion? In other words, will it show the original function as the source of error, or will it show the calling function instead? 回答1: It depends

问题 When upgrading from Surefire 2.6 to Surefire 2.13, I get a TypeNotPresentExceptionProxy when running my unit tests. java.lang.ArrayStoreException: sun.reflect.annotation.TypeNotPresentExceptionProxy at sun.reflect.annotation.AnnotationParser.parseClassArray(AnnotationParser.java:653) at sun.reflect.annotation.AnnotationParser.parseArray(AnnotationParser.java:460) at sun.reflect.annotation.AnnotationParser.parseMemberValue(AnnotationParser.java:286) at sun.reflect.annotation.AnnotationParser

问题 I am trying to use the finally block without using the try/catch blocks but getting the error in Eclipse. Can I use the finally block without using the try/catch blocks? 回答1: finally should have atleast a try block, catch is optional. The point of finally blocks is to make sure stuff gets cleaned up whether an exception is thrown or not. As per the JLS A finally clause ensures that the finally block is executed after the try block and any catch block that might be executed, no matter how

问题 I am getting the following exception: Value currently is [object Object] popup.html:1 Error handling response: TypeError: Assignment to constant variable. at chrome-extension://....../popup.js:19:18 Trying to get the input from my Chrome extension and using it in here... const settings = { name: "", email: "", tel: "", cc_number: "", cc_exp: "", cc_csc: "", address_line1: "", address_level2: "", address_level1: "", postal_code: "" } function getSettingsfromStorage() { chrome.storage.local.get