The Java API will be more fully-featured than what's available for XPath, and is generally preferable. The general rule in handling exceptions is that the try-catch block must be as specific as possible in catching exceptions. – user166390 Dec 7 '11 at 22:55 com.ibm.bpe.api.RuntimeFaultException: RuntimeFaultException wraps all runtime failures that can happen during the execution of BPEL processes, for example, when executing a script activity or when evaluating a transition Avoid duplicate condition in if-else statement: The duplicate condition, item == null, can be avoided by having a nested if statement as shown below. Do not rethrow exception in catch block. Class names should always begin with an upper case letter and method name should begin with lower case letter. That is, a catch-all scenario must be avoided. It's considered better to catch all the specific exceptions instead. sonarqube-plugin / src / main / java / org / sonarsource / scanner / jenkins / pipeline / WaitForQualityGateStep.java / Jump to Code definitions No definitions found in this file. 8. they're used to gather information about the pages you visit and how many clicks you need to accomplish a Do not use deprecated methods 3. What's an Exception and Why Do I Care? 7. Do not use == or != operators for string comparison. A piece of code calling a method that throws a checked exception (ie IOException) must surround the call within a try/catch block. Sonar is a java based open source platform that evaluates and reports on source code quality. You should catch specific exceptions instead of a generic exception. "SystemExit" should be re-raised, RSPEC-1938 We caught the exception of func, because we clearly indicated that func will throw an exception throw new Exception(); so we will also catch it here and deal with … Throwable is the superclass of all errors and exceptions in Java. CPP-1608 Log the exception properly or do some relevant operations in the catch block. Sonar treat this violation as very severe one. For example, (IOException) e.getCause() throws a ClassCastException that discards the originale e 3、Eitherlog or rethrow this exception catch异常之后，使用log方式或者throw异常的方式解决。如果业务上真的没有throw或者记录日志的话，可以使用log.debug的方式填充来解决问题。 4、Makethis IP "127.0.0.1" address 将IP弄 C++ Rule: Generic exceptions should not be caught, SONARJAVA-270 Returns throwable's cause, cast to expectedCauseType. The catch clause can handle the exception if one of its catchable exception classes is the class of the exception or a superclass of the class of the exception. 而catch Exception只会捕捉Exception极其子类，捕捉的范围更小。. 4. Loggers should be used instead to print { {Throwable}}s, as they have many advantages: Do not declare Throws Exception  in method signature. Here are some Do’s and Dont’s that will help the developer in avoiding sonar violations. Rather than throw a raw RuntimeException, Throwable, Exception, or Error, use a subclassed exception or error instead. ExceptionTypeChecking At some places Exception is caught and then a check with instanceof is performed. The operators == and != are used for comparing java.lang.String objects for reference equality. This 2.5 minute video shows what happens if a thrown object is not caught by a catch block. What this means is that even though the method explicitly throws the exception the caller of this method will not be notified at compile time that he is supposed to catch this exception. So continuous evaluation is required to check the quality of the code. This class defines a custom exception type for all operations on CosmosClient in the Azure Cosmos DB database service. The throwable object The code that "handles" an exception may be far removed from the place where the exception occurred. Rule: Throwable and Error should not be caught, SONARJAVA-1278 For example, it’s better to write like this: try { if (condition1 ) { throw new FirstException(); } if (condition2) { throw new SecondException(); } } catch (FirstException e) { // handle first exception } catch (SecondException e) { // handle second exception } 16. Programs can throw a predefined exception class in the System namespace (except where previously noted), or create their own exception classes by deriving from Exception. 解析. Rule S1181: Add exception to not raise an issue if a method call explicitly throws a Throwable, CPP-2419 This result in messy code. Sonar has a set of rules violating which will fail the  build. Throwable is the superclass of all errors and exceptions in Java. 在看关于hibernate的书的时候有上面这段代码，然后用sonarqube分析过后对于静态代码块部分（大约15-20行的位置）报了 Catch Exception instead of Throwable. The derived classes should define at least four constructors: one parameterless constructor, one that sets the message property, and one that sets both the Message and InnerException properties. Adding XPath rules directly through the SonarQube web interface. 上网查了一下ExceptionInInitializerError是一个error，按照道理出现这个问题jvm应该就是死了，那么还有必要catch（Throwable）以及throw new ExceptionInInitializerError(ex);吗？ Do not throw Raw Exception Types Instead of throwing raw exception types such as Exception, Throwable or Error, throw specific exceptions. A method that throws a checked exception must announce to the world that it does in the method signature. The term exception is shorthand for the phrase "exceptional event" and can be defined as follows: Note on terminology: Some languages (or their development environments) use the terms raise and handle the same way that Java uses throw and catch.. To raise an exception, simply pass the appropriate instance to throw, normally: throw new MyFormatExpcetion("spaces are not allowed");-- you could even use the standard ParseException, without "creating" a custom exception type. Sonar does this. 这两种处理的区别在于，catch throwable会把Error和其他继承Throwable的类捕捉到。而catch Exception只会捕捉Exception极其子类，捕捉的范围更小。先不考虑有其他的类继承了Throwable的情况下，第一种catch相当于比第二种