static void rethrow(String s) throws FirstException, SecondException, ThirdException { try { if (s.equals("First")) throw new FirstException("First"); else if (s.equals("Second")) throw new SecondException("Sec
throwe;//rethrowtheexception } } publicstaticvoidmain(Stringargs[]){ try{ demoproc(); }catch(NullPointerExceptione){ System.out.println("Recaught:"+e); } } } 该程序有两个机会处理相同的错误。首先,main()设立了一个异常关系然后调用demoproc()。demoproc()方法然后设立了另一个异常处理关系并且...
throwe;//rethrowtheexception } } publicstaticvoidmain(Stringargs[]){ try{ demoproc(); }catch(NullPointerExceptione){ System.out.println("Recaught:"+e); } } } 该程序有两个机会处理相同的错误。首先,main()设立了一个异常关系然后调用demoproc()。demoproc()方法然后设立了另一个异常处理关系并且...
If there is no try block just above the rethrow statement then the method containing the rethrow statement handles it. To propagate an exception, the catch block can choose to rethrow the exception by using the throw statement. Note that there is no special syntax for rethrowing. Program ...
You should not throw an object of this type. There is little you can do if sucn an internal error occurs, beyond notifying the user and trying to terminate the program gracefully. 3.3 Exception Exception可以分为两类: RuntimeException
Issue The error java.lang.RuntimeException: Unable to install analysis-icu plugin error is produced when starting Liferay using an...
@supercat:代码在第一条注释中已经有了一种简单的方法:在try块中包装代码,捕获Exception,并在RuntimeException和rethrow中包装Exception。 @WarrenDew我有信心Supercat知道这个方法,并认为它缺乏由于产生的代码膨胀。具有表达这一点的声明式风格(而不是每次都必须详细地实施)将是一项巨大的资产。从本质上讲,它有一个...
这里,exception-list是该方法可以引发的以有逗号分割的异常列表。 下面是一个不正确的例子。该例试图引发一个它不能捕获的异常。因为程序没有指定一个throws子句来声明这一事实,程序将不会编译。 //Thisprogramcontainsanerrorandwillnotcompile. classThrowsDemo{ ...
these exceptions. Do not overlook these events. If necessary, you can either rethrow it, show an error dialog to the user, or add a message to the log. At the very least, it should be explained why the exception has been left unhandled in order to let other developers know the reason...
3)多个catch 的异常顺序:从特定到一般, FileNotFoundException 是 IOException 的一个子类;7.2.3 再次抛出异常与异常链// 应用场景1:Sometimes you want to catch an exception and rethrow it as a different type. // 解决方式1:try { access the database } catch (SQLException e) { throw new ...