Making an XMLReader

• The XMLReaderFactory.createXMLReader() method instantiates an XMLReader subclass named by the org.xml.sax.driver system property:

  try {
    XMLReader parser = XMLReaderFactory.createXMLReader();
  } 
  catch (SAXException e) {
    System.err.println(e);
  }

  or

  System.setProperty("org.xml.sax.driver", "org.apache.xerces.parsers.SAXParser");
  try {
    XMLReader parser = XMLReaderFactory.createXMLReader();
  } 
  catch (SAXException e) {
    System.err.println(e);
  }

• The XMLReaderFactory.createXMLReader(String className) method instantiates an XMLReader subclass named by its argument:

  try {
    XMLReader parser 
     = XMLReaderFactory.createXMLReader(   
        "org.apache.xerces.parsers.SAXParser");
  } 
  catch (SAXException e) {
    System.err.println(e);
  }

• Or you can use the constructor in the package-specific class:

  XMLReader parser = new org.apache.xerces.parsers.SAXParser();
  

• Or all three:

      XMLReader parser;
      try {
        parser = XMLReaderFactory.createXMLReader();
      }
      catch (SAXException ex) {
        try {
          parser = XMLReaderFactory.createXMLReader(
           "org.apache.xerces.parsers.SAXParser");
        }
        catch (SAXException ex2) {
          parser = new org.apache.xerces.parsers.SAXParser();
        }
      }