Java Tutorial/XML/DocumentBuilder

Create new DocumentBuilderFactory

import javax.xml.parsers.DocumentBuilder;
import javax.xml.parsers.DocumentBuilderFactory;
import javax.xml.parsers.ParserConfigurationException;
public class TryDOM {
  public static void main(String args[]) {
    DocumentBuilderFactory builderFactory = DocumentBuilderFactory.newInstance();
    DocumentBuilder builder = null;
    try {
      builder = builderFactory.newDocumentBuilder();
    } catch (ParserConfigurationException e) {
      e.printStackTrace();
      System.exit(1);
    }
    System.out.println("Builder Factory = " + builderFactory + "\nBuilder = " + builder);
  }
}

New Document From InputStream

import java.io.IOException;
import java.io.InputStream;
import java.io.StringReader;
import java.io.StringWriter;
import java.text.ParseException;
import java.text.SimpleDateFormat;
import java.util.ArrayList;
import java.util.Date;
import java.util.Iterator;
import javax.xml.parsers.DocumentBuilder;
import javax.xml.parsers.DocumentBuilderFactory;
import javax.xml.parsers.ParserConfigurationException;
import javax.xml.transform.Transformer;
import javax.xml.transform.TransformerException;
import javax.xml.transform.TransformerFactory;
import javax.xml.transform.dom.DOMSource;
import javax.xml.transform.stream.StreamResult;
import org.w3c.dom.Document;
import org.w3c.dom.Element;
import org.w3c.dom.Node;
import org.w3c.dom.NodeList;
import org.xml.sax.InputSource;
import org.xml.sax.SAXException;
/*******************************************************************************
 * Copyright (C) 2007 Google Inc.
 * 
 * Licensed under the Apache License, Version 2.0 (the "License"); you may not
 * use this file except in compliance with the License. You may obtain a copy of
 * the License at
 * 
 * http://www.apache.org/licenses/LICENSE-2.0
 * 
 * Unless required by applicable law or agreed to in writing, software
 * distributed under the License is distributed on an "AS IS" BASIS, WITHOUT
 * WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied. See the
 * License for the specific language governing permissions and limitations under
 * the License.
 ******************************************************************************/
/**
 * Various XML utilities.
 * 
 * @author simonjsmith, ksim
 * @version 1.1 - ksim - March 6th, 2007 - Added functions regarding streaming
 * @version 1.2 - ksim - March 10th, 2007 - Added functions regarding DOM
 *          manipulation
 */
public class Utils {
  public static Document newDocumentFromInputStream(InputStream in) {
    DocumentBuilderFactory factory = null;
    DocumentBuilder builder = null;
    Document ret = null;
    try {
      factory = DocumentBuilderFactory.newInstance();
      builder = factory.newDocumentBuilder();
    } catch (ParserConfigurationException e) {
      e.printStackTrace();
    }
    try {
      ret = builder.parse(new InputSource(in));
    } catch (SAXException e) {
      e.printStackTrace();
    } catch (IOException e) {
      e.printStackTrace();
    }
    return ret;
  }
}

New Document From String

import java.io.IOException;
import java.io.StringReader;
import java.io.StringWriter;
import java.text.ParseException;
import java.text.SimpleDateFormat;
import java.util.ArrayList;
import java.util.Date;
import java.util.Iterator;
import javax.xml.parsers.DocumentBuilder;
import javax.xml.parsers.DocumentBuilderFactory;
import javax.xml.parsers.ParserConfigurationException;
import javax.xml.transform.Transformer;
import javax.xml.transform.TransformerException;
import javax.xml.transform.TransformerFactory;
import javax.xml.transform.dom.DOMSource;
import javax.xml.transform.stream.StreamResult;
import org.w3c.dom.Document;
import org.w3c.dom.Element;
import org.w3c.dom.Node;
import org.w3c.dom.NodeList;
import org.xml.sax.InputSource;
import org.xml.sax.SAXException;
/*******************************************************************************
 * Copyright (C) 2007 Google Inc.
 * 
 * Licensed under the Apache License, Version 2.0 (the "License"); you may not
 * use this file except in compliance with the License. You may obtain a copy of
 * the License at
 * 
 * http://www.apache.org/licenses/LICENSE-2.0
 * 
 * Unless required by applicable law or agreed to in writing, software
 * distributed under the License is distributed on an "AS IS" BASIS, WITHOUT
 * WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied. See the
 * License for the specific language governing permissions and limitations under
 * the License.
 ******************************************************************************/
/**
 * Various XML utilities.
 * 
 * @author simonjsmith, ksim
 * @version 1.1 - ksim - March 6th, 2007 - Added functions regarding streaming
 * @version 1.2 - ksim - March 10th, 2007 - Added functions regarding DOM
 *          manipulation
 */
public class Utils {
  public static Document newDocumentFromString(String xmlString) {
    DocumentBuilderFactory factory = null;
    DocumentBuilder builder = null;
    Document ret = null;
    try {
      factory = DocumentBuilderFactory.newInstance();
      builder = factory.newDocumentBuilder();
    } catch (ParserConfigurationException e) {
      e.printStackTrace();
    }
    try {
      ret = builder.parse(new InputSource(new StringReader(xmlString)));
    } catch (SAXException e) {
      e.printStackTrace();
    } catch (IOException e) {
      e.printStackTrace();
    }
    return ret;
  }
}