exception refers to the various conditions, such as: file cannot be found, network connection failure, illegal parameters and so on.An exception is an event that interferes with the normal instruction flow during the program's run.Java describes
1. Preface Try...catch...finally I'm afraid it's a familiar statement, and it's very simple to use, logically it seems to be easy to understand. However, I personally experience the "lesson" tells me that this thing is not as simple as the
1. Background Introduction
Why do you want to do exception handling?
For a computer program, no one can guarantee that it will run without error, the main source of error is the following:
Code Error
User illegal input
Device errors
Visual C + + exception (Exception) FAQCopyright: Doug Harrison 2001–2007Translation: Magictong (Tong Lei) March 2011Original address: http://members.cox.NET/doug_web/eh.htmThis article discusses some of the implementations in Visual C + + about try{}
The abnormally large classification is divided into detection anomaly (checked exception) and non-detectable anomaly (unchecked exception). The detection exception is the exception that can be found in the compiler.
Non-detectable anomaly also
PHP exception handling, error throwing and error callback function, exception handling callback function
Error, Exception level constants table
Error: The run-time error cannot be found at compile time, instead of trying to output an unassigned
OverviewIn general, enterprise-level applications are corresponding to complex business logic, in order to ensure the robustness of the system, it is necessary to face a variety of system business anomalies and run-time anomalies.Bad exception
Abstract
People are not sages. Code is written by humans, and of course it cannot be error-free. We can only expect that the code is more robust and not perfect. What we can do more is how to recover from errors or find alternative solutions. CLR
Oracle Developer is famous for its rapid data processing and development, and its exception handling mechanism is also relatively complete.
1. Advantages of exceptions
If no exception occursProgramCheck whether each command succeeds or fails,
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