NodeSet cannot be resolved to a type in android

I want to execute an xpath query

i added

import javax.xml.xpath.*;

and i used this code

XPath xpath = XPathFactory.newInstance().newXPath();
String expression = "/books/book";
InputSource inputSource = new InputSource("books.xml");
NodeSet nodes =(NodeSet) xpath.evaluate(expression, inputSource, XPathConstants.NODESET);

I used this documentation

but an error NodeSet cannot be resolved to a type is displayed

Thank you in advance

Update

I chaged the code to:

XPathFactory xPathFactory = XPathFactory.newInstance();
    // To get an instance of the XPathFactory object itself.
    XPath xPath = xPathFactory.newXPath();
    // Create an instance of XPath from the factory class.
    String expression = "/books/book";
    XPathExpression xPathExpression = xPath.compile(expression);

    // Compile the expression to get a XPathExpression object.
    Object result = xPathExpression.evaluate(R.raw.books);
    //Evaluate the expression against the XML Document to get the result.

But an error displayed in this lines

XPathExpression xPathExpression = xPath.compile开发者_运维百科(expression);
    Object result = xPathExpression.evaluate(R.raw.books);

xPath.compile(expression); and xPathExpression.evaluate(R.raw.books);errors

what i do now?

According to this documentation the java representation of NodeSet is NodeList. You can try to replace NodeSet with NodeList.

NodeList nodes =(NodeList) xpath.evaluate(expression, inputSource, XPathConstants.NODESET);