import org.apache.commons.jxpath.JXPathContext;



public class JXPathDemo{



	public static void main(String args[]){



		// create our data

		Book book = new Book();

		book.setTitle("My Unpublished Works");

		book.setCost(0);



		Author author1 = new Author();

		author1.setName("Me");

		author1.setAuthorId(1000);



		book.setAuthor(author1);



		// now create a JXPath context

		JXPathContext context = JXPathContext.newContext(book);



		// and lets exercise it

		System.err.println(context.getValue("title"));



		System.err.println(context.getValue("author/authorId"));



		context.setValue("author/authorId", "1001");



		System.err.println("New Value: " + context.getValue("author/authorId"));



	}



}