Main.java Source code

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Here is the source code for Main.java

Source

import static org.w3c.dom.Node.ATTRIBUTE_NODE;
import static org.w3c.dom.Node.CDATA_SECTION_NODE;
import static org.w3c.dom.Node.COMMENT_NODE;
import static org.w3c.dom.Node.DOCUMENT_TYPE_NODE;
import static org.w3c.dom.Node.ELEMENT_NODE;
import static org.w3c.dom.Node.ENTITY_NODE;
import static org.w3c.dom.Node.ENTITY_REFERENCE_NODE;
import static org.w3c.dom.Node.NOTATION_NODE;
import static org.w3c.dom.Node.PROCESSING_INSTRUCTION_NODE;
import static org.w3c.dom.Node.TEXT_NODE;

import java.io.IOException;
import java.io.StringReader;

import javax.xml.parsers.DocumentBuilder;
import javax.xml.parsers.DocumentBuilderFactory;
import javax.xml.parsers.ParserConfigurationException;

import org.w3c.dom.Document;
import org.w3c.dom.DocumentType;
import org.w3c.dom.Node;
import org.w3c.dom.NodeList;
import org.w3c.dom.Text;
import org.xml.sax.InputSource;
import org.xml.sax.SAXException;

public class Main {
    public static void main(String args[]) {
        DocumentBuilderFactory builderFactory = DocumentBuilderFactory.newInstance();
        builderFactory.setNamespaceAware(true); // Set namespace aware
        builderFactory.setValidating(true); // and validating parser feaures
        builderFactory.setIgnoringElementContentWhitespace(true);

        DocumentBuilder builder = null;
        try {
            builder = builderFactory.newDocumentBuilder(); // Create the parser
        } catch (ParserConfigurationException e) {
            e.printStackTrace();
        }
        Document xmlDoc = null;

        try {
            xmlDoc = builder.parse(new InputSource(new StringReader(xmlString)));

        } catch (SAXException e) {
            e.printStackTrace();

        } catch (IOException e) {
            e.printStackTrace();
        }
        DocumentType doctype = xmlDoc.getDoctype();
        if (doctype == null) {
            System.out.println("DOCTYPE is null");
        } else {
            System.out.println("DOCTYPE node:\n" + doctype.getInternalSubset());
        }

        System.out.println("\nDocument body contents are:");
        listNodes(xmlDoc.getDocumentElement(), ""); // Root element & children
    }

    static void listNodes(Node node, String indent) {
        String nodeName = node.getNodeName();
        System.out.println(indent + " Node: " + nodeName);
        short type = node.getNodeType();
        System.out.println(indent + " Node Type: " + nodeType(type));
        if (type == TEXT_NODE) {
            System.out.println(indent + " Content is: " + ((Text) node).getWholeText());
        }

        NodeList list = node.getChildNodes();
        if (list.getLength() > 0) {
            System.out.println(indent + " Child Nodes of " + nodeName + " are:");
            for (int i = 0; i < list.getLength(); i++) {
                listNodes(list.item(i), indent + "  ");
            }
        }
    }

    static String nodeType(short type) {
        switch (type) {
        case ELEMENT_NODE:
            return "Element";
        case DOCUMENT_TYPE_NODE:
            return "Document type";
        case ENTITY_NODE:
            return "Entity";
        case ENTITY_REFERENCE_NODE:
            return "Entity reference";
        case NOTATION_NODE:
            return "Notation";
        case TEXT_NODE:
            return "Text";
        case COMMENT_NODE:
            return "Comment";
        case CDATA_SECTION_NODE:
            return "CDATA Section";
        case ATTRIBUTE_NODE:
            return "Attribute";
        case PROCESSING_INSTRUCTION_NODE:
            return "Attribute";
        }
        return "Unidentified";
    }

    static String xmlString = "<?xml version=\"1.0\"?>" + "  <!DOCTYPE address" + "  ["
            + "     <!ELEMENT address (buildingnumber, street, city, state, zip)>"
            + "     <!ATTLIST address xmlns CDATA #IMPLIED>" + "     <!ELEMENT buildingnumber (#PCDATA)>"
            + "     <!ELEMENT street (#PCDATA)>" + "     <!ELEMENT city (#PCDATA)>"
            + "     <!ELEMENT state (#PCDATA)>" + "     <!ELEMENT zip (#PCDATA)>" + "  ]>" + "" + "  <address>"
            + "    <buildingnumber> 29 </buildingnumber>" + "    <street> South Street</street>"
            + "    <city>Vancouver</city>" + "" + "    <state>BC</state>" + "    <zip>V6V 4U7</zip>"
            + "  </address>";
}