org.w3c.dom.ls

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1. Loading an XML document from a file using a DOM Level 3 Load and Save (LS) parser

import org.w3c.dom.ls.DOMImplementationLS;
import org.w3c.dom.ls.LSInput;
import org.w3c.dom.ls.LSParser;
import org.w3c.dom.Document;

public class LoadXMLFromFileLS {

    public static void main(String[] args) throws Exception {
        // Get the DOM Implementation for Level 3 Load and Save
        DOMImplementationLS domImpl = (DOMImplementationLS) DocumentBuilderFactory.newInstance().newDocumentBuilder().getDOMImplementation();

        // Create a new parser
        LSParser parser = domImpl.createLSParser(DOMImplementationLS.MODE_SYNCHRONOUS, null);

        // Define the input source for the parser
        LSInput input = domImpl.createLSInput();
        input.setByteStream(new FileInputStream("path/to/file.xml"));

        // Parse the XML document
        Document document = parser.parse(input);

        // Use the document as needed
    }
}

2. Saving an XML document to a file using a DOM Level 3 Load and Save (LS) parser

import org.w3c.dom.ls.DOMImplementationLS;
import org.w3c.dom.ls.LSOutput;
import org.w3c.dom.ls.LSSerializer;
import org.w3c.dom.Document;

public class SaveXMLToFileLS {

    public static void main(String[] args) throws Exception {
        // Create a DOM Document
        Document document = DocumentBuilderFactory.newInstance().newDocumentBuilder().newDocument();

        // Get the DOM Implementation for Level 3 Load and Save
        DOMImplementationLS domImpl = (DOMImplementationLS) DocumentBuilderFactory.newInstance().newDocumentBuilder().getDOMImplementation();

        // Create a new serializer
        LSSerializer serializer = domImpl.createLSSerializer();

        // Define the output destination for the serializer
        LSOutput output = domImpl.createLSOutput();
        output.setByteStream(new FileOutputStream("path/to/file.xml"));

        // Serialize the document to the file
        serializer.write(document, output);
    }
}

3. Loading an XML document from a URL using a DOM Level 3 Load and Save (LS) parser

import org.w3c.dom.ls.DOMImplementationLS;
import org.w3c.dom.ls.LSInput;
import org.w3c.dom.ls.LSParser;
import org.w3c.dom.Document;

public class LoadXMLFromURL {

    public static void main(String[] args) throws Exception {
        // Get the DOM Implementation for Level 3 Load and Save
        DOMImplementationLS domImpl = (DOMImplementationLS) DocumentBuilderFactory.newInstance().newDocumentBuilder().getDOMImplementation();

        // Create a new parser
        LSParser parser = domImpl.createLSParser(DOMImplementationLS.MODE_SYNCHRONOUS, null);

        // Define the input source for the parser
        LSInput input = domImpl.createLSInput();
        input.setSystemId("https://www.w3.org/TR/DOM-Level-3-Load-Save/sample.xml");

        // Parse the XML document
        Document document = parser.parse(input);

        // Use the document as needed
    }
}

4. Saving an XML document to a string using a DOM Level 3 Load and Save (LS) parser

import org.w3c.dom.ls.DOMImplementationLS;
import org.w3c.dom.ls.LSOutput;
import org.w3c.dom.ls.LSSerializer;
import org.w3c.dom.Document;

public class SaveXMLToStringLS {

    public static void main(String[] args) throws Exception {
        // Create a DOM Document
        Document document = DocumentBuilderFactory.newInstance().newDocumentBuilder().newDocument();

        // Get the DOM Implementation for Level 3 Load and Save
        DOMImplementationLS domImpl = (DOMImplementationLS) DocumentBuilderFactory.newInstance().newDocumentBuilder().getDOMImplementation();

        // Create a new serializer
        LSSerializer serializer = domImpl.createLSSerializer();

        // Define the output destination for the serializer
        LSOutput output = domImpl.createLSOutput();
        output.setCharacterStream(new StringWriter());

        // Serialize the document to a string
        serializer.write(document, output);

        // Get the serialized XML as a string
        String xmlString = output.getCharacterStream().toString();
    }
}

5. Loading an XML document using a stream

import org.w3c.dom.ls.DOMImplementationLS;
import org.w3c.dom.ls.InputSource;
import org.w3c.dom.ls.LSParser;
import org.w3c.dom.Document;

public class LoadXMLFromStream {

    public static void main(String[] args) throws Exception {
        // Create an InputStream from an XML file
        InputStream inputStream = new FileInputStream("path/to/file.xml");

        // Get the DOM Implementation for Level 3 Load and Save
        DOMImplementationLS domImpl = (DOMImplementationLS) DocumentBuilderFactory.newInstance().newDocumentBuilder().getDOMImplementation();

        // Create a new parser
        LSParser parser = domImpl.createLSParser(DOMImplementationLS.MODE_SYNCHRONOUS, null);

        // Define the input source for the parser
        InputSource inputSource = new InputSource();
        inputSource.setByteStream(inputStream);

        // Parse the XML document
        Document document = parser.parse(inputSource);

        // Use the document as needed
    }
}

6. Saving an XML document to a stream

import org.w3c.dom.ls.DOMImplementationLS;
import org.w3c.dom.ls.Output;
import org.w3c.dom.ls.LSSerializer;
import org.w3c.dom.Document;

public class SaveXMLToStreamLS {

    public static void main(String[] args) throws Exception {
        // Create a DOM Document
        Document document = DocumentBuilderFactory.newInstance().newDocumentBuilder().newDocument();

        // Get the DOM Implementation for Level 3 Load and Save
        DOMImplementationLS domImpl = (DOMImplementationLS) DocumentBuilderFactory.newInstance().newDocumentBuilder().getDOMImplementation();

        // Create a new serializer
        LSSerializer serializer = domImpl.createLSSerializer();

        // Define the output destination for the serializer
        Output output = domImpl.createLSOutput();
        output.setByteStream(new FileOutputStream("path/to/file.xml"));

        // Serialize the document to the stream
        serializer.write(document, output);
    }
}

7. Loading an XML document from a Reader

import org.w3c.dom.ls.DOMImplementationLS;
import org.w3c.dom.ls.InputSource;
import org.w3c.dom.ls.LSParser;
import org.w3c.dom.Document;

public class LoadXMLFromReader {

    public static void main(String[] args) throws Exception {
        // Create a Reader from an XML file
        Reader reader = new FileReader("path/to/file.xml");

        // Get the DOM Implementation for Level 3 Load and Save
        DOMImplementationLS domImpl = (DOMImplementationLS) DocumentBuilderFactory.newInstance().newDocumentBuilder().getDOMImplementation();

        // Create a new parser
        LSParser parser = domImpl.createLSParser(DOMImplementationLS.MODE_SYNCHRONOUS, null);

        // Define the input source for the parser
        InputSource inputSource = new InputSource();
        inputSource.setCharacterStream(reader);

        // Parse the XML document
        Document document = parser.parse(inputSource);

        // Use the document as needed
    }
}

8. Saving an XML document to a Writer

import org.w3c.dom.ls.DOMImplementationLS;
import org.w3c.dom.ls.Output;
import org.w3c.dom.ls.LSSerializer;
import org.w3c.dom.Document;

public class SaveXMLToWriterLS {

    public static void main(String[] args) throws Exception {
        // Create a DOM Document
        Document document = DocumentBuilderFactory.newInstance().newDocumentBuilder().newDocument();

        // Get the DOM Implementation for Level 3 Load and Save
        DOMImplementationLS domImpl = (DOMImplementationLS) DocumentBuilderFactory.newInstance().newDocumentBuilder().getDOMImplementation();

        // Create a new serializer
        LSSerializer serializer = domImpl.createLSSerializer();

        // Define the output destination for the serializer
        Output output = domImpl.createLSOutput();
        output.setCharacterStream(new FileWriter("path/to/file.xml"));

        // Serialize the document to the Writer
        serializer.write(document, output);
    }
}

9. Loading an XML document from a DOM Node

import org.w3c.dom.ls.DOMImplementationLS;
import org.w3c.dom.ls.InputSource;
import org.w3c.dom.ls.LSParser;
import org.w3c.dom.Node;
import org.w3c.dom.Document;

public class LoadXMLFromNode {

    public static void main(String[] args) throws Exception {
        // Create a DOM Node from an XML fragment
        Node node = DocumentBuilderFactory.newInstance().newDocumentBuilder().parse("path/to/fragment.xml").getDocumentElement();

        // Get the DOM Implementation for Level 3 Load and Save
        DOMImplementationLS domImpl = (DOMImplementationLS) DocumentBuilderFactory.newInstance().newDocumentBuilder().getDOMImplementation();

        // Create a new parser
        LSParser parser = domImpl.createLSParser(DOMImplementationLS.MODE_SYNCHRONOUS, null);

        // Define the input source for the parser
        InputSource inputSource = new InputSource();
        inputSource.setNode(node);

        // Parse the XML document
        Document document = parser.parse(inputSource);

        // Use the document as needed
    }
}

10. Saving an XML document to a DOM Node

import org.w3c.dom.ls.DOMImplementationLS;
import org.w3c.dom.ls.Output;
import org.w3c.dom.ls.LSSerializer;
import org.w3c.dom.Document;
import org.w3c.dom.Node;

public class SaveXMLToNodeLS {

    public static void main(String[] args) throws Exception {
        // Create a DOM Document
        Document document = DocumentBuilderFactory.newInstance().newDocumentBuilder().newDocument();

        // Get the DOM Implementation for Level 3 Load and Save
        DOMImplementationLS domImpl = (DOMImplementationLS) DocumentBuilderFactory.newInstance().newDocumentBuilder().getDOMImplementation();

        // Create a new serializer
        LSSerializer serializer = dom