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XPath evaluate(schedule@seriesId)

import java.io.FileReader; import javax.xml.xpath.XPath; import javax.xml.xpath.XPathConstants; import javax.xml.xpath.XPathFactory; import org.xml.sax.InputSource; public class GetSeriesId {   public static void main(String[] args) throws Exception {     XPathFactory factory = XPathFactory.newInstance();     XPath xPath = factory.newXPath();     Double result = (Double) xPath.evaluate("/schedule/@seriesId", new InputSource(new FileReader(         "tds.xml")), XPathConstants.NUMBER);     System.out.println(result.intValue());   } }