Introduzione a Pascal - download pdf or read online

By Adriano Bausola

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In the example code, no visual event should occur with these methods; however, as with implementing any interface, the methods must still be present: public void startDocument( ) throws SAXException { // No visual events occur here } public void endDocument( ) throws SAXException { // No visual events occur here } Both of these callback methods can throw SAXExceptions. The only types of exceptions that SAX events ever throw, they provide another standard interface to the parsing behavior. However, these exceptions often wrap other exceptions that indicate what problems have occurred.

0 is not covered in this book. 0. 0 final form. I strongly urge you to move on to Version 2 if you haven't already. 1 Instantiating a Reader SAX provides an interface all SAX-compliant XML parsers should implement. This allows SAX to know exactly what methods are available for callback and use within an application. XMLReader interface. If you have access to the source of your parser, you should see the same interface implemented in your parser's main SAX parser class. parse(uri); With that in mind, it's worth looking at a more realistic example.

This interface defines several important methods within the parsing lifecycle that our application can react to. Since all the necessary import statements are in place (I cheated and put them in already), all that is needed is to code an implementation of the ContentHandler interface. java source file. current = base; } // ContentHandler method implementations } Don't bother trying to compile the source file at this point; you'll get a ton of errors about methods defined in ContentHandler not being implemented.

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Introduzione a Pascal by Adriano Bausola


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