Initial data commit

Task/XML-XPath/Java/xml-xpath.java

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+import java.io.StringReader;
+import javax.xml.parsers.DocumentBuilderFactory;
+import javax.xml.xpath.XPath;
+import javax.xml.xpath.XPathConstants;
+import javax.xml.xpath.XPathFactory;
+import org.w3c.dom.Document;
+import org.w3c.dom.Node;
+import org.w3c.dom.NodeList;
+import org.xml.sax.InputSource;
+
+public class XMLParser {
+	final static String xmlStr =
+			  "<inventory title=\"OmniCorp Store #45x10^3\">"
+			+ "  <section name=\"health\">"
+			+ "    <item upc=\"123456789\" stock=\"12\">"
+			+ "      <name>Invisibility Cream</name>"
+			+ "      <price>14.50</price>"
+			+ "      <description>Makes you invisible</description>"
+			+ "    </item>"
+			+ "    <item upc=\"445322344\" stock=\"18\">"
+			+ "      <name>Levitation Salve</name>"
+			+ "      <price>23.99</price>"
+			+ "      <description>Levitate yourself for up to 3 hours per application</description>"
+			+ "    </item>"
+			+ "  </section>"
+			+ "  <section name=\"food\">"
+			+ "    <item upc=\"485672034\" stock=\"653\">"
+			+ "      <name>Blork and Freen Instameal</name>"
+			+ "      <price>4.95</price>"
+			+ "      <description>A tasty meal in a tablet; just add water</description>"
+			+ "    </item>"
+			+ "    <item upc=\"132957764\" stock=\"44\">"
+			+ "      <name>Grob winglets</name>"
+			+ "      <price>3.56</price>"
+			+ "      <description>Tender winglets of Grob. Just add priwater</description>"
+			+ "    </item>"
+			+ "  </section>"
+			+ "</inventory>";
+
+	public static void main(String[] args) {
+		try {
+			Document doc = DocumentBuilderFactory.newInstance()
+					.newDocumentBuilder()
+					.parse(new InputSource(new StringReader(xmlStr)));
+			XPath xpath = XPathFactory.newInstance().newXPath();
+			// 1
+			System.out.println(((Node) xpath.evaluate(
+					"/inventory/section/item[1]", doc, XPathConstants.NODE))
+					.getAttributes().getNamedItem("upc"));
+			// 2, 3
+			NodeList nodes = (NodeList) xpath.evaluate(
+					"/inventory/section/item/price", doc,
+					XPathConstants.NODESET);
+			for (int i = 0; i < nodes.getLength(); i++)
+				System.out.println(nodes.item(i).getTextContent());
+		} catch (Exception e) {
+			System.out.println("Error ocurred while parsing XML.");
+		}
+	}
+}