java error handling best practices

In fact, work so long has not been clear how to deal with the exception, by chance to see a foreign language feeling is good, then translated it down, the original link is located at the end of this article.Handling Exceptions in Java is not an easy thing to do, and not only do beginners find it difficult to understand that even experienced developers spend hours discussing whether an exception should be thrown or disposed of.That's why most developme

themselves with these typical negative examples, in this way, you can perceive and avoid these problems keenly in your actual work. 　　Counterexample: discard exception Code: Lines 15-18. This code captures exceptions without any processing. It can be regarded as a killer in Java programming. In terms of the frequency and severity of the problem, it may be comparable to that of the C/C ++ program ?? Do not check whether the buffer zone is full. If you

can perceive and avoid these problems keenly in your actual work.Counterexample: discard exceptionCode: Lines 15-18.This code captures exceptions without any processing. It can be regarded as a killer in Java programming. In terms of the frequency and severity of the problem, it may be comparable to that of the C/C ++ program ?? Do not check whether the buffer zone is full. If you see this discard (rather than throw) exception, you can be 99% sure th

Six bad habits of Exception HandlingIn the following code, can you quickly find the six problems for exception handling? 1 outputstreamwriter out =... 2 Java. SQL. Connection conn =... 3 try {// retry 4 Statement stat = conn. createstatement (); 5 resultset rs = stat.exe cutequery ( 6 "select uid, name from user "); 7 while (Rs. Next ()) 8 { 9 out. println ("ID:" + Rs. getstring ("uid") // response 10 ", na

responsibility in the exception handling module. Discarding exceptions is a common situation. Open the documentation for the Threaddeath class of JDK and see the following note: "Specifically, although Threaddeath is a ' normal situation ', the Threaddeath class is an error rather than a exception subclass, Because many applications will catch all the exception and discard it and ignore it. "This passage m

method is quite similar to Chrome SSL handling code Desiredcapabilities capabilities = new Desiredcapabilities (); Capabilities.setcapability (CapabilityType.ACCEPT_SSL_ CERTS, True); System.setproperty ("Webdriver.ie.driver", "IEDriverServer.exe"); Webdriver Driver = new Internetexplorerdriver (capabilities);The above code would help with handle SSL certificate error in IE.Summary: SSL (Secu

Java Exception handling ErrorThe best time to find errors is in the compile phase, which is before you run the program. However, no errors can be identified during compilation, and the remaining issues must be resolved at run time. This requires an error source to pass the appropriate information to a recipient in a way that knows how to handle the problem.The pu

. printStackTrace ();System. err. println ("I don't know how to handle this exception or I don't want to handle it at all, but it is not suitable if I don't do it. This is to throw an exception and submit it to the next level for processing ");// Throw an exception againThrow e;}}Public static void printFile (String file ){Try {ReadFile (file );} Catch (FileNotFoundException e ){E. printStackTrace ();}}Public static void main (String [] args ){PrintFile ("D:/file "

1: Describe the simple principle and application of the exception handling mechanism in Java, and describe the difference between error and exception? If noProgramIf an exception is generated, the JVM will throw an instantiated object of the exception class, if the try statement is used for capture, exception handling