Java SAX Parser Example

Filed Under: Java

SAX Parser in java provides API to parse XML documents. SAX parser is different from DOM parser because it doesn’t load complete XML into memory and read xml document sequentially.

SAX Parser

sax parser, sax parser example, java sax parser

javax.xml.parsers.SAXParser provides method to parse XML document using event handlers. This class implements XMLReader interface and provides overloaded versions of parse() methods to read XML document from File, InputStream, SAX InputSource and String URI.

The actual parsing is done by the Handler class. We need to create our own handler class to parse the XML document. We need to implement org.xml.sax.ContentHandler interface to create our own handler classes. This interface contains callback methods that receive notification when an event occurs. For example StartDocument, EndDocument, StartElement, EndElement, CharacterData etc.

org.xml.sax.helpers.DefaultHandler provides default implementation of ContentHandler interface and we can extend this class to create our own handler. It’s advisable to extend this class because we might need only a few of the methods to implement. Extending this class will keep our code cleaner and maintainable.

SAX parser Example

Let’s jump to the SAX parser example program now, I will explain different features in detail later on.

employees.xml


<?xml version="1.0" encoding="UTF-8"?>
<Employees>
	<Employee id="1">
		<age>29</age>
		<name>Pankaj</name>
		<gender>Male</gender>
		<role>Java Developer</role>
	</Employee>
	<Employee id="2">
		<age>35</age>
		<name>Lisa</name>
		<gender>Female</gender>
		<role>CEO</role>
	</Employee>
	<Employee id="3">
		<age>40</age>
		<name>Tom</name>
		<gender>Male</gender>
		<role>Manager</role>
	</Employee>
	<Employee id="4">
		<age>25</age>
		<name>Meghna</name>
		<gender>Female</gender>
		<role>Manager</role>
	</Employee>
</Employees>

So we have a XML file stored somewhere in file system and by looking at it, we can conclude that it contains list of Employee. Every Employee has id attribute and fields age, name, gender and role.

We will use SAX parser to parse this XML and create a list of Employee object.

Here is the Employee object representing Employee element from XML.


package com.journaldev.xml;

public class Employee {
    private int id;
    private String name;
    private String gender;
    private int age;
    private String role;
    
    public int getId() {
        return id;
    }
    public void setId(int id) {
        this.id = id;
    }
    public String getName() {
        return name;
    }
    public void setName(String name) {
        this.name = name;
    }
    public String getGender() {
        return gender;
    }
    public void setGender(String gender) {
        this.gender = gender;
    }
    public int getAge() {
        return age;
    }
    public void setAge(int age) {
        this.age = age;
    }
    public String getRole() {
        return role;
    }
    public void setRole(String role) {
        this.role = role;
    }
    
    @Override
    public String toString() {
        return "Employee:: ID="+this.id+" Name=" + this.name + " Age=" + this.age + " Gender=" + this.gender +
                " Role=" + this.role;
    }
    
}

Let’s create our own SAX Parser Handler class extending DefaultHandler class.



package com.journaldev.xml.sax;

import java.util.ArrayList;
import java.util.List;

import org.xml.sax.Attributes;
import org.xml.sax.SAXException;
import org.xml.sax.helpers.DefaultHandler;

import com.journaldev.xml.Employee;

public class MyHandler extends DefaultHandler {

	// List to hold Employees object
	private List<Employee> empList = null;
	private Employee emp = null;
	private StringBuilder data = null;

	// getter method for employee list
	public List<Employee> getEmpList() {
		return empList;
	}

	boolean bAge = false;
	boolean bName = false;
	boolean bGender = false;
	boolean bRole = false;

	@Override
	public void startElement(String uri, String localName, String qName, Attributes attributes) throws SAXException {

		if (qName.equalsIgnoreCase("Employee")) {
			// create a new Employee and put it in Map
			String id = attributes.getValue("id");
			// initialize Employee object and set id attribute
			emp = new Employee();
			emp.setId(Integer.parseInt(id));
			// initialize list
			if (empList == null)
				empList = new ArrayList<>();
		} else if (qName.equalsIgnoreCase("name")) {
			// set boolean values for fields, will be used in setting Employee variables
			bName = true;
		} else if (qName.equalsIgnoreCase("age")) {
			bAge = true;
		} else if (qName.equalsIgnoreCase("gender")) {
			bGender = true;
		} else if (qName.equalsIgnoreCase("role")) {
			bRole = true;
		}
		// create the data container
		data = new StringBuilder();
	}

	@Override
	public void endElement(String uri, String localName, String qName) throws SAXException {
		if (bAge) {
			// age element, set Employee age
			emp.setAge(Integer.parseInt(data.toString()));
			bAge = false;
		} else if (bName) {
			emp.setName(data.toString());
			bName = false;
		} else if (bRole) {
			emp.setRole(data.toString());
			bRole = false;
		} else if (bGender) {
			emp.setGender(data.toString());
			bGender = false;
		}
		
		if (qName.equalsIgnoreCase("Employee")) {
			// add Employee object to list
			empList.add(emp);
		}
	}

	@Override
	public void characters(char ch[], int start, int length) throws SAXException {
		data.append(new String(ch, start, length));
	}
}

MyHandler contains the list of the Employee object as a field with a getter method only. The Employee objects are getting added in the event handler methods. Also, we have an Employee field that will be used to create an Employee object and once all the fields are set, add it to the employee list.

SAX parser methods to override

The important methods to override are startElement(), endElement() and characters().

SAXParser starts parsing the document, when any start element is found, startElement() method is called. We are overriding this method to set boolean variables that will be used to identify the element.

We are also using this method to create a new Employee object every time Employee start element is found. Check how id attribute is read here to set the Employee Object id field.

characters() method is called when character data is found by SAXParser inside an element. Note that SAX parser may divide the data into multiple chunks and call characters() method multiple times (Read ContentHandler class characters() method documentation). That’s why we are using StringBuilder to keep this data using append() method.

The endElement() is the place where we use the StringBuilder data to set employee object properties and add Employee object to the list whenever we found Employee end element tag.

Below is the test program that uses MyHandler to parse above XML to list of Employee objects.


package com.journaldev.xml.sax;

import java.io.File;
import java.io.IOException;
import java.util.List;

import javax.xml.parsers.ParserConfigurationException;
import javax.xml.parsers.SAXParser;
import javax.xml.parsers.SAXParserFactory;

import org.xml.sax.SAXException;

import com.journaldev.xml.Employee;

public class XMLParserSAX {

    public static void main(String[] args) {
    SAXParserFactory saxParserFactory = SAXParserFactory.newInstance();
    try {
        SAXParser saxParser = saxParserFactory.newSAXParser();
        MyHandler handler = new MyHandler();
        saxParser.parse(new File("/Users/pankaj/employees.xml"), handler);
        //Get Employees list
        List<Employee> empList = handler.getEmpList();
        //print employee information
        for(Employee emp : empList)
            System.out.println(emp);
    } catch (ParserConfigurationException | SAXException | IOException e) {
        e.printStackTrace();
    }
    }

}

Here is the output of the above program.


Employee:: ID=1 Name=Pankaj Age=29 Gender=Male Role=Java Developer
Employee:: ID=2 Name=Lisa Age=35 Gender=Female Role=CEO
Employee:: ID=3 Name=Tom Age=40 Gender=Male Role=Manager
Employee:: ID=4 Name=Meghna Age=25 Gender=Female Role=Manager

SAXParserFactory provides factory methods to get the SAXParser instance. We are passing File object to the parse method along with MyHandler instance to handle the callback events.

SAXParser is a little bit confusing in the start but if you are working on a large XML document, it provides a more efficient way to read XML than DOM Parser. That’s all for SAX Parser in Java.

You can download the project from our GitHub Repository.

Reference: SAXParser, DefaultHandler

Comments

  1. krishna says:

    i want to display only specific tags of xml file in jtree
    i am using sax parser and defaultmutabletreenode

    here is my code:

    import javax.swing.*;

    import java.awt.*;
    import java.awt.event.*;
    import java.io.*;

    import javax.swing.tree.*;

    import org.xml.sax.*;
    import org.xml.sax.helpers.*;
    import org.apache.xerces.parsers.*;

    public class ScfA {

    // private String currentElement;
    private SAXTreeBuilder saxTree = null;
    private static String file = “”;

    public static void main(String args[]) {
    JFrame frame = new JFrame(“[ PROSscf ]”);
    frame.setSize(400, 400);

    frame.addWindowListener(new WindowAdapter() {
    public void windowClosing(WindowEvent ev) {
    System.exit(0);
    }
    });
    file = “lastscf.xml”;
    new ScfA(frame);
    }

    public ScfA(JFrame frame) {
    frame.getContentPane().setLayout(new BorderLayout());
    DefaultMutableTreeNode top = new DefaultMutableTreeNode(file);
    // DefaultMutableTreeNode top1= new
    // DefaultMutableTreeNode(“XML Document”);

    saxTree = new SAXTreeBuilder(top);

    try {
    SAXParser saxParser = new SAXParser();
    saxParser.setContentHandler(saxTree);
    saxParser.parse(file);
    } catch (Exception ex) {
    top.add(new DefaultMutableTreeNode(ex.getMessage()));
    }
    JTree tree = new JTree(saxTree.getTree());
    JScrollPane scrollPane = new JScrollPane(tree);

    frame.getContentPane().add(“Center”, scrollPane);
    frame.setVisible(true);

    }

    }

    class SAXTreeBuilder extends DefaultHandler {

    private DefaultMutableTreeNode currentNode = null;
    private DefaultMutableTreeNode previousNode = null;
    private DefaultMutableTreeNode rootNode = null;

    public SAXTreeBuilder(DefaultMutableTreeNode root) {

    rootNode = root;
    currentNode = rootNode;

    }

    public DefaultMutableTreeNode getRoot() {
    return rootNode;
    }

    // check whether required or not
    public void characters(char[] data, int start, int end) {
    String str = new String(data, start, end);
    if (!str.equals(“”) && Character.isLetter(str.charAt(0))) {
    currentNode.add(new DefaultMutableTreeNode(str));

    }
    }

    public void startElement(String uri, String qName, String lName,
    Attributes atts) throws SAXException {
    /* if (“Application”.equals(currentNode)) */

    /* String name = (String)currentNode.getUserObject(); */

    previousNode = currentNode;

    // Use the result of the getNodeText method to construct the tree

    currentNode = new DefaultMutableTreeNode(getNodeText(lName, atts));

    // Add attributes as child nodes //
    if (shouldFilter(currentNode)) {

    attachAttributeList(currentNode, atts);

    previousNode.add(currentNode);
    }
    }

    /*
    * DefaultMutableTreeNode newNode = new DefaultMutableTreeNode(lName);
    *
    * if (currentNode == null) { rootNode = newNode; } else {
    * if(shouldFilter(newNode))
    *
    *
    * currentNode.add(newNode); } currentNode = newNode;
    *
    * }
    */
    /*
    * private void filterNodes(DefaultMutableTreeNode node) {
    * System.out.println(node); int childCount = node.getChildCount(); for (int
    * i = childCount – 1; i >= 0; i–) { DefaultMutableTreeNode child =
    * (DefaultMutableTreeNode) node .getChildAt(i); if (shouldFilter(child)) {
    * node.remove(i); } else { filterNodes(child); }
    */

    public void endElement(String uri, String qName, String lName) {
    if (currentNode.getUserObject().equals(lName)){

    currentNode = (DefaultMutableTreeNode) currentNode.getParent();

    }
    }

    private String getNodeText(final String lName, final Attributes atts) {
    final String postfix;

    if (“Cube”.equals(lName) && atts.getValue(“name”) != null)
    postfix = “: ” + atts.getValue(“name”);
    else if (“Dimension”.equals(lName) && atts.getValue(“name”) != null)
    postfix = ” :” + atts.getValue(“name”);
    else if (“AggregateTable”.equals(lName)
    && atts.getValue(“name”) != null)
    postfix = ” :” + atts.getValue(“name”);
    else if (“PrimaryKey”.equals(lName) && atts.getValue(“name”) != null)
    postfix = ” :” + atts.getValue(“name”);
    else if (“Measure”.equals(lName) && atts.getValue(“name”) != null)
    postfix = ” :” + atts.getValue(“name”);
    else if (“FactDimension”.equals(lName) && atts.getValue(“name”) != null)
    postfix = ” :” + atts.getValue(“name”);
    /*
    * else if (“AggregateLevel”.equals(lName) && atts.getValue(“name”) !=
    * null) postfix = ” :” + atts.getValue(“name”);
    */
    else
    postfix = “”;
    return lName + postfix;
    }

    public DefaultMutableTreeNode getTree() {

    return rootNode;

    }

    boolean shouldFilter(DefaultMutableTreeNode node) {
    String name = (String) node.getUserObject();
    /* System.out.println(name); */

    return ((name.contains(“Cube”)));
    }

    private void attachAttributeList(DefaultMutableTreeNode node,
    Attributes atts) {
    for (int i = 0; i < atts.getLength(); i++) {

    String name = atts.getLocalName(i);

    String value = atts.getValue(name);
    if (!name.equals("name"))
    node.add(new DefaultMutableTreeNode(name + " = " + value));

    }

    }
    }

  2. Rahul says:

    Is that possible if my xml have 100 Employee tag and I want to parse 20 employee at a time. I don’t want to get the a list of 100 employee in my memory.So, I just want to parse 20 employee in a single list.

    1. Vignesh.P says:

      Ya it is possible..i think you can use SAX parse..correct me if i am wrong

  3. Tint says:

    Hi,

    Could you pls give example for unstructured xml file?

  4. Sundara Baskaran says:

    when to use SAX parser and when to use DOM parser?

    1. Vignesh.P says:

      When you have large XML file go with SAX parser otherwise go with DOM parser

  5. Aishwarya says:

    Your example was amazing… Its very easy to understand and I fixed my issue using this example.

  6. Amit says:

    Hi ,

    Issue –> Actually I am facing issue with xml parsing (SAX Parser) in Unix Machine. Same Jar/Java-Code behave differently on windows and Unix Machine, why ? 🙁

    Windows Machine –> works fine , Using SAX Parser to load huge xml file , Read all values correctly and populate same values. Charset.defaultCharset() windows-1252

    Unix Machine –> After then created JAR and deployed at Unix –> tomcat and execute the jar.
    Tried to load same huge xml file But noticed that some values or characters are populated empty or incomplete like
    Country Name populated as “ysia” instead of “Malaysia” or transaction Date populate as “3 PM” instead of “18/09/2016 03:31:23 PM”. Charset.defaultCharset() UTF-8

    Issue is only with Unix , Because when I load same xml at windows or my local eclipse it works fine and all values populate correctly.

    Also I tried to modify my code and set encoding as UTF-8 for inputSteamReader but still it’s not read value correctly at unix box.

    Note : There is no special characters in xml. Also noticed one thing that when I take out same records (those value not populated correctly) in other xml file and load in unix machine with same jar it works fine. It means issues occur while load these records with huge data. 🙁

    Please suggest , What should be the solution ?

    1. Alexa says:

      A bit late but might help others:

      Be aware that the example given here is WRONG!!!!!
      SAX-Parser CAN and WILL split fields arbitrarily for calling the ‘characters’ method. Assign the result to anything will lead to problems.
      This most often manifest in incomplete strings – a field containing the name of a street might have “Very long overly complicated streetname” in it, but SAX splits it up into “Very long overly compli” and “cated streetname” – which leads to only “cated streetname” being assigned to your variable.

      The correct way to handle this is using a buffer (String-builder for example) in your handler. In “startElement” empty the buffer, in “characters” fill the buffer (append) and in “endElement” handle the full content of the buffer.

      1. Pankaj says:

        Hi Alexa,

        Thanks for pointing out the issue in the code. Yes, you are correct that characters() method can be called multiple times and we should use a buffer to hold this data. I never encountered this issue in my project work, I have corrected the code.

  7. Alex says:

    Hi,thanks for your usefoul example.
    I have a clarification on how I can modify the Employee.java object representing Employee element from XML.
    For example, if the employees.xml has additional attributes, how can I rapresent them in the Employee class
    in order to generate getter and setter methods to store the values of these attributes ?

    For example in your employees.xml file I added on employee 2 , the attribute Type=”Crypted3des” on tag name and on tg .gender.

    35
    Lisa
    Female
    CEO

    Thanks in advance.
    Alex

  8. Steve says:

    I don’t understand why you created a boolean for each of the elements of your employee. Is this something one would need to do for every element or just the ones I care about? I have a much more complex xml file that contains many subfolders

  9. sandip gavade says:

    Thanks for the post ..it is useful for me..

  10. Bhadri says:



    i want to extract data between
    plz can u help….???

  11. Saqib Rana says:

    I have problem in XML Parsing.. anyone help me…..

  12. amit says:

    hi pankaj can you tell me how cam i print a specific xml block.like in your example i want to print only

    35
    Lisa
    Female
    CEO

    1. amit says:

      with xml tag

  13. soniya says:

    Exception in thread “main” java.lang.OutOfMemoryError: Java heap space
    at com.sun.org.apache.xerces.internal.parsers.XML11Configuration.parse(XML11Configuration.java:848)
    at com.sun.org.apache.xerces.internal.parsers.XML11Configuration.parse(XML11Configuration.java:777)
    at com.sun.org.apache.xerces.internal.parsers.XMLParser.parse(XMLParser.java:141)
    at com.sun.org.apache.xerces.internal.parsers.AbstractSAXParser.parse(AbstractSAXParser.java:1213)
    at com.sun.org.apache.xerces.internal.jaxp.SAXParserImpl$JAXPSAXParser.parse(SAXParserImpl.java:649)
    at org.jdom2.input.sax.SAXBuilderEngine.build(SAXBuilderEngine.java:217)
    at org.jdom2.input.sax.SAXBuilderEngine.build(SAXBuilderEngine.java:329)
    at org.jdom2.input.SAXBuilder.build(SAXBuilder.java:1256)
    at uk.ac.ucl.ee.fnss.Parser.parseTrafficMatrixSequence(Unknown Source)
    at kr.re.kisti.hieuvt.core.HelperTp.getTrafficMatrixAtTime(HelperTp.java:69)
    at kr.re.kisti.hieuvt.core.HelperTp.updateTrafficMap(HelperTp.java:87)
    at kr.re.kisti.hieuvt.core.HelperTp.classifyVms(HelperTp.java:115)
    at kr.re.kisti.hieuvt.run.RandomRunnerTp.init(RandomRunnerTp.java:81)
    at org.cloudbus.cloudsim.examples.power.RunnerAbstract.(RunnerAbstract.java:95)
    at kr.re.kisti.hieuvt.run.RunnerAbstractTp.(RunnerAbstractTp.java:52)
    at kr.re.kisti.hieuvt.run.RandomRunnerTp.(RandomRunnerTp.java:58)
    at kr.re.kisti.hieuvt.run.LrMmtTp.main(LrMmtTp.java:40)

  14. Ravi says:

    Pankaj,
    I am able to parse the XML into java objects. But whenever the XML finds and “Empty tag” it pring with blank space for that particular java object.
    Could you pls let me know how to handle EMpty tags. I want to pring “Null” if there is any empty tag instead of blank space.
    TIA.

  15. Toni says:

    hi everyone , any one can solve my prob i am i big prob
    i am sending my prob if some one can solve then plz send the solution on my mail Id =”tonibrown212@gmail.com” this is urgent
    =============================
    Problem statement
    ================
    Objective is to create a REST web-service (or a simple Java program) which converts a XML
    from hierarchical format to linear format.
    Input XML would be hierarchical in nature. There will a element which can contain
    any number of other elements and so on.
    The will have an optional element . Weare interested in the element
    and we want to convert this XML to a linear format where there is a element for each
    element. The name of that should be the path to that element.
    Please note that there is no fixed depth of this XML and the depth is non-uniform (ragged-hierarchy). The will be there at the leaf-level nodes but it may/may not appear for
    parent level nodes.
    Input XML

    A

    B

    C
    3.0

    D
    4.0

    7.0

    Output XML

    A/B/C
    3.0

    A/B/D
    4.0

    A/B
    7.0

  16. fakhruddin says:

    i have a kml file which has multiple placemark objects. in placemark object there is multiple coordinates tag
    i want to read all coordinates tag in the placemark object.

    thanks

  17. Josh says:

    Hi Pankaj,
    Thank you for your contribution. It really worked for my requirements.

  18. Atul Goyal says:

    Hello Pankaj Sir,

    I do not want to read whole xml file at a time. I want to read only 50 or 100 or any fix number of records at a time. And display them to user and when user click on next then read next records.Like Pagination

    How to do that .

  19. SJK says:

    Can you please explain how do i dump xml data into database?

    1. Pankaj says:

      Once you have XML data, you can create a String from it and save it in the DB table VARCHAR type column, for large XML/Text data, you should use CLOB data type.

  20. Kunal says:

    I am trying the above code but the attribute is getting null.. plz help

  21. Archu says:

    When I run the above code, I am getting

    “java.io.FileNotFoundException: C:\Users\420117\Desktop\employee.xml (The system cannot find the file specified)
    at java.io.FileInputStream.open(Native Method)
    at java.io.FileInputStream.(Unknown Source)
    at java.io.FileInputStream.(Unknown Source)
    at sun.net.www.protocol.file.FileURLConnection.connect(Unknown Source)
    at sun.net.www.protocol.file.FileURLConnection.getInputStream(Unknown Source)
    at com.sun.org.apache.xerces.internal.impl.XMLEntityManager.setupCurrentEntity(Unknown Source)
    at com.sun.org.apache.xerces.internal.impl.XMLVersionDetector.determineDocVersion(Unknown Source)
    at com.sun.org.apache.xerces.internal.parsers.XML11Configuration.parse(Unknown Source)
    at com.sun.org.apache.xerces.internal.parsers.XML11Configuration.parse(Unknown Source)
    at com.sun.org.apache.xerces.internal.parsers.XMLParser.parse(Unknown Source)
    at com.sun.org.apache.xerces.internal.parsers.AbstractSAXParser.parse(Unknown Source)
    at com.sun.org.apache.xerces.internal.jaxp.SAXParserImpl$JAXPSAXParser.parse(Unknown Source)
    at com.sun.org.apache.xerces.internal.jaxp.SAXParserImpl.parse(Unknown Source)
    at javax.xml.parsers.SAXParser.parse(Unknown Source)
    at com.journeldev.xml.sax.XMLParserSAX.main(XMLParserSAX.java:25)”

    Means “File Not Found Exception”…. But , I verified the path very well of my xml file. Still I am getting the same error.. Would some body help …

    1. Pankaj says:

      If file is there, then it seems to be access issue.

    2. phuong says:

      sometime we forgot saxparser.parse(“filename”,handle) and miss final type “xml ”
      –> saxparser.parse(“filename.xml”,handle)

    3. Dima says:

      be sure in file name you look for employee.xml and author save it like employees.xml

    4. MsCoder says:

      Try putting double back slash as shown below:
      C:\Users\420117\Desktop\employee.xml

  22. Nagaraj says:

    Nice article. I can take this as reference for using SAX kind of parser and build on it.. Thanks!

  23. ramesh says:

    Can you help me, how to do sax parsing for be low xml

    1
    PROD=DPP;PLC=IOYR2013NSSN

    1003N.3::DPP::0

    94
    94
    15
    15
    94
    11.6
    12.34

    15.95
    10.5

    CF=1;PLC=IOYR2013NSSN;M_ITEMSELL:MFY.=93.85;M_SALESTAX:TFN.=7.37;M_SHIPPING:SFYS=7.78;M_SHIPSUR:SFYS=0;P_ITEMSELL:MFN.=94;P_SHIPSUR:SFNS=0;P_TSH:SFNS=15;A_ITEM:PAX=94;A_ITEM:USD=94;A_SHIP:PAX=15;A_SHIP:USD=15;D_PV:PAX=15.95;D_BV:PAX=10.5

    94
    94
    15
    15
    94
    11.6
    12.34

    15.95
    10.5

    CF=1;PLC=IOYR2013NSSN;M_ITEMSELL:MFY.=93.85;M_SALESTAX:TFN.=7.37;M_SHIPPING:SFYS=7.78;M_SHIPSUR:SFYS=0;P_ITEMSELL:MFN.=94;P_SHIPSUR:SFNS=0;P_TSH:SFNS=15;A_ITEM:PAX=94;A_ITEM:USD=94;A_SHIP:PAX=15;A_SHIP:USD=15;D_PV:PAX=15.95;D_BV:PAX=10.5

    1. Pankaj says:

      You need to post after escaping < and > signs.

      1. ramesh says:

        1
        PROD=DPP;PLC=IOYR2013NSSN

        1003N.3::DPP::0

        94
        94
        15
        15
        94
        11.6
        12.34

        15.95
        10.5

        CF=1;PLC=IOYR2013NSSN;M_ITEMSELL:MFY.=93.85;M_SALESTAX:TFN.=7.37;M_SHIPPING:SFYS=7.78;M_SHIPSUR:SFYS=0;P_ITEMSELL:MFN.=94;P_SHIPSUR:SFNS=0;P_TSH:SFNS=15;A_ITEM:PAX=94;A_ITEM:USD=94;A_SHIP:PAX=15;A_SHIP:USD=15;D_PV:PAX=15.95;D_BV:PAX=10.5

        94
        94
        15
        15
        94
        11.6
        12.34

        15.95
        10.5

        CF=1;PLC=IOYR2013NSSN;M_ITEMSELL:MFY.=93.85;M_SALESTAX:TFN.=7.37;M_SHIPPING:SFYS=7.78;M_SHIPSUR:SFYS=0;P_ITEMSELL:MFN.=94;P_SHIPSUR:SFNS=0;P_TSH:SFNS=15;A_ITEM:PAX=94;A_ITEM:USD=94;A_SHIP:PAX=15;A_SHIP:USD=15;D_PV:PAX=15.95;D_BV:PAX=10.5

      2. ramesh says:

        ?xml version=”1.0″ encoding=”UTF-8″?
        pricelists
        pricelist priceListId=”1003N.3::DPP::0″ action=”replace”
        conversionFactor1/conversionFactor
        priceListSummaryPROD=DPP;PLC=IOYR2013NSSN/priceListSummary
        ccus
        ccu action=”replace”1003N.3::DPP::0/ccu
        /ccus
        skus
        sku skuId=”52868-BLK” action=”replace”
        itemUSD94/itemUSD
        itemPAX94/itemPAX
        shipUSD15/shipUSD
        shipPAX15/shipPAX
        originalPAX94/originalPAX
        marginAmountUSD11.6/marginAmountUSD
        marginPercent12.34/marginPercent
        customValues
        customValue name=”PV”15.95/customValue
        customValue name=”BV”10.5/customValue
        /customValues
        maritzSummaryCF=1;PLC=IOYR2013NSSN;M_ITEMSELL:MFY.=93.85;M_SALESTAX:TFN.=7.37;M_SHIPPING:SFYS=7.78;M_SHIPSUR:SFYS=0;P_ITEMSELL:MFN.=94;P_SHIPSUR:SFNS=0;P_TSH:SFNS=15;A_ITEM:PAX=94;A_ITEM:USD=94;A_SHIP:PAX=15;A_SHIP:USD=15;D_PV:PAX=15.95;D_BV:PAX=10.5/maritzSummary
        /sku
        sku skuId=”52868-BLU” action=”replace”
        itemUSD94/itemUSD
        itemPAX94/itemPAX
        shipUSD15/shipUSD
        shipPAX15/shipPAX
        originalPAX94/originalPAX
        marginAmountUSD11.6/marginAmountUSD
        marginPercent12.34/marginPercent
        customValues
        customValue name=”PV”15.95/customValue
        customValue name=”BV”10.5/customValue
        /customValues
        maritzSummaryCF=1;PLC=IOYR2013NSSN;M_ITEMSELL:MFY.=93.85;M_SALESTAX:TFN.=7.37;M_SHIPPING:SFYS=7.78;M_SHIPSUR:SFYS=0;P_ITEMSELL:MFN.=94;P_SHIPSUR:SFNS=0;P_TSH:SFNS=15;A_ITEM:PAX=94;A_ITEM:USD=94;A_SHIP:PAX=15;A_SHIP:USD=15;D_PV:PAX=15.95;D_BV:PAX=10.5/maritzSummary
        /sku
        /skus
        /pricelist
        /pricelists

  24. Dalal says:

    Hi Pankaj,

    I have no coding experience and I’m trying to parse an xml file. I used your code and modified it. When I run it, i get this:

    Exception in thread “main” java.lang.NullPointerException
    at edu.illinois.lis.hakimra2.myproject.MyHandler.characters(MyHandler.java:72)
    at com.sun.org.apache.xerces.internal.parsers.AbstractSAXParser.characters(Unknown Source)
    at com.sun.org.apache.xerces.internal.impl.XMLDocumentFragmentScannerImpl.scanDocument(Unknown Source)
    at com.sun.org.apache.xerces.internal.parsers.XML11Configuration.parse(Unknown Source)
    at com.sun.org.apache.xerces.internal.parsers.XML11Configuration.parse(Unknown Source)
    at com.sun.org.apache.xerces.internal.parsers.XMLParser.parse(Unknown Source)
    at com.sun.org.apache.xerces.internal.parsers.AbstractSAXParser.parse(Unknown Source)
    at com.sun.org.apache.xerces.internal.jaxp.SAXParserImpl$JAXPSAXParser.parse(Unknown Source)
    at com.sun.org.apache.xerces.internal.jaxp.SAXParserImpl.parse(Unknown Source)
    at javax.xml.parsers.SAXParser.parse(Unknown Source)
    at edu.illinois.lis.hakimra2.myproject.XMLParserSAX.main(XMLParserSAX.java:19)

    Do you know what might the problem be? Also, I want to store my data in a csv file. Can you tell me how to do it?
    Thanks

    1. Pankaj says:

      Check the code, NullPointerException is very easy to solve, figure out which object is null in that line.

  25. Ellen says:

    How to parse empty tags?
    I mean example is cool but very simple. I can’t figure out how to parse short notation tags:
    or empty ones but lik ….this is correct xml, but according to code above, next node will be treated as content of it…

  26. Emmanuel says:

    Hi, when running the program I get the following output:
    pojos.Employee@1a3ca10
    pojos.Employee@26f9e5
    pojos.Employee@e06703
    pojos.Employee@8b1a4f

    rename packages

    what is the problem?

    1. Pankaj says:

      I think you missed the toString() implementation in the Employee class, that’s why it’s printing above, using Object class implementation of toString() method.

  27. ashwini says:

    HI,

    SIR… its fine for single xml document, if in case we are using more than one xml document how it will differentiate and store.
    ex: you are taken employee xml document, i am inserting student.xml doc and book.xml document in that how it will identify individually and store. if we enter pankaj how it will identify whether it is student name or employee name or author name.

  28. Ariyur says:

    Hi,

    For example using startelement I’m passing as but in the endelement I should get only as not as .I have used ContentHandler for this. How can we implement to have different name in header and footer. Any help can be greatly appreciated!

  29. pallavi says:

    Hi Pankaj,
    Is the response data Should be in request.Is there any chance for hidden……
    Means already stored data we need with some reference field.
    like through Employee Id, we need to get Employee details(already Employee Details are stored)….
    How it is??????????

    1. Pankaj says:

      You might parse Emp ID from the XML and based on that get full details from database or from other systems as per your requirement.

  30. Andres says:

    Thank you very much, very clear explanations. I’ve been trying for several hours to wrap my head around the concept and usage of the SAX API and you made it easy for me.
    Thank you again!

  31. Varsha says:

    Just append the label of button with textbox content and set It again.
    String num=t1.getText()+btn.getLabel();
    t1.setText(num);
    something like this

  32. Jide says:

    Hi Pankaj, i appreciate your contributions. pls i am writing a GUI calculator program. When i click on a number, it displays in the textfield, but, the moment i click on another, it overrides the previous. how do i go about this?

    1. Pankaj says:

      I am sorry but I haven’t worked on Swings.

    2. Manooj says:

      If the area where you display the number is a Text Area, then you should try using appedText instead of setText.

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