Read xml using stax api in java

XmlStax.java

import java.io.InputStream;
import java.nio.file.Files;
import java.nio.file.Path;
import java.util.ArrayList;
import java.util.List;

import javax.xml.namespace.QName;
import javax.xml.stream.XMLEventReader;
import javax.xml.stream.XMLInputFactory;
import javax.xml.stream.events.EndElement;
import javax.xml.stream.events.StartElement;
import javax.xml.stream.events.XMLEvent;

public class XmlStax {

    public static void main(String[] args) throws Exception {
        try (InputStream in = Files.newInputStream(Path.of("sample.xml"))) {
            XMLEventReader reader = XMLInputFactory.newInstance().createXMLEventReader(in);
            while (reader.hasNext()) {
                XMLEvent nextEvent = reader.nextEvent();
                if (nextEvent.isStartElement()) {
                    StartElement startElement = nextEvent.asStartElement();
                    String elementName = startElement.getName().getLocalPart();
                    if ("FOO".equals(elementName)) {
                        String attr = startElement.getAttributeByName(QName.valueOf("xxx")).getValue();
                    }
                }
            }
        }
    }
}