salesforce exception methods

Brief introduction:1, the concept of abnormalExceptions: Problems--abnormal---are encapsulated into objects;The object that Java describes to different abnormal situation is embodied; for serious exceptions, Java is described by the error class-------generally do not write targeted code to handle itfor non-critical unhandled exceptions, Java is described by the exception class--and can be handled using targeted codeSystem: Object2. General format try

Python common exception classification and handling methods, python Processing Methods Common Python exception typesIt can be divided into the following categories: 1. AssertionError: The exception thrown when the assert asserted condition is false. 2. AttributeError:

I. C language error handling methods 1. Return Value (if... Else statement judgment error)2. errno (called in Linux)3. GOTO statement (partial jump in function)4. setjmp, longjmp (do not useSetjmp andLongjmp in C ++ programs; these functions do not support C ++ object semantics .) # DEFINE _ jblen 16 Typedef _ jbtype jmp_buf [_ jblen]; Saves the current state of the program. int setjmp( jmp_buf env );Parameters Env Variable in which e

handling methods: Basic usage of exceptionsCreate a custom exception processorMultiple exceptionsThrow an exception again.Set the top-level exception processorBasic usage of exceptionsWhen an exception is thrown, the subsequent code will not be executed, and PHP will try to

the message to handle the two different situations. The solution to this problem is obviously to encode the exception in some way so that it can be easily queried when it is necessary to identify how to react to this abnormal environment. The first reaction library is to use the $code property of the exception base class. Another is by creating subclasses or new excep