title: SchemaCompiler bind() returns null
body: <p>I' m writing a class to run xjc in java. my code goes as follows:</p>
  
  <pre><code>SchemaCompiler sc = XJC.createSchemaCompiler();
   URL url = new URL("file://E:\\JAXB\\books.xsd");
   sc.parseSchema(new InputSource(url.toExternalForm()));
   S2JJAXBModel model = sc.bind();
   JCodeModel cm = model.generateCode(null, null);
   cm.build(new FileCodeWriter(new File("E:\\JAXBTest")));
  </code></pre>
  
  <p>i get model as null when i run this.</p>
  
  <p>Can anyone pls help me or provide any link where i can know abt this.</p>