web ex15:-

SOURCE CODE:

SAXParserExample.java

import java.io.IOException;

import java.util.ArrayList;

import java.util.Iterator;

import java.util.List;

import javax.xml.parsers.ParserConfigurationException;

import javax.xml.parsers.SAXParser;

import javax.xml.parsers.SAXParserFactory;

import org.xml.sax.Attributes;

import org.xml.sax.SAXException;

import org.xml.sax.helpers.DefaultHandler;

    public class SAXParserExample extends DefaultHandler

           {

     List myEmpls;

     private String tempVal;

     //to maintain context

     private Employee tempEmp;

     public SAXParserExample()

            {

                 myEmpls = new ArrayList();

     }

     public void runExample()

{

                 parseDocument();

                 printData();

     }

     private void parseDocument()

 { 

                 //get a factory

                 SAXParserFactory spf = SAXParserFactory.newInstance();

                 try {

                             //get a new instance of parser

                             SAXParser sp = spf.newSAXParser();

                             //parse the file and also register this class for call backs

                             sp.parse("employees.xml", this);

                       }

catch(SAXException se) {se.printStackTrace();}        catch(ParserConfigurationException pce) {pce.printStackTrace();}

catch (IOException ie) {ie.printStackTrace();}

     }

     /**

      * Iterate through the list and print

      * the contents

      */

     private void printData()

     {

           System.out.println("No of Employees '" + myEmpls.size() + "'.");

           Iterator it = myEmpls.iterator();

           while(it.hasNext())

                        {

                      System.out.println(it.next().toString());

                 }

     }

     //Event Handlers

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

{

                 //reset

                 tempVal = "";

                 if(qName.equalsIgnoreCase("Employee"))

                 {

                             //create a new instance of employee

                             tempEmp = new Employee();

                             tempEmp.setType(attributes.getValue("type"));

                 }

      }

     public void characters(char[] ch, int start, int length) throws SAXException

     {

                 tempVal = new String(ch,start,length);

     }

public void endElement(String uri, String localName, String qName) throws SAXException

 {

                 if(qName.equalsIgnoreCase("Employee"))

{

                             //add it to the list

                             myEmpls.add(tempEmp);

                            

                 }

else if (qName.equalsIgnoreCase("Name"))

{

                             tempEmp.setName(tempVal);

                 }

else if (qName.equalsIgnoreCase("Id"))

{

                             tempEmp.setId(Integer.parseInt(tempVal));

                 }

else if (qName.equalsIgnoreCase("Age"))

{

                             tempEmp.setAge(Integer.parseInt(tempVal));

                 }

     }

     public static void main(String[] args)

{

                 SAXParserExample spe = new SAXParserExample();

                 spe.runExample();

     }

    

}

Employee.java

public class Employee {

     private String name;

     private int age;

     private int id;

     private String type;

     public Employee(){   

     }

    

     public Employee(String name, int id, int age,String type) {

                 this.name = name;

                 this.age = age;

                 this.id  = id;

                 this.type = type;         

     }

     public int getAge() {

                 return age;

     }

     public void setAge(int age) {

                 this.age = age;

     }

     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 getType() {

                 return type;

     }

     public void setType(String type) {

                 this.type = type;

     }         

     public String toString() {

                 StringBuffer sb = new StringBuffer();

                 sb.append("Employee Details - ");

                 sb.append("Name:" + getName());

                 sb.append(", ");

                 sb.append("Type:" + getType());

                 sb.append(", ");

                 sb.append("Id:" + getId());

                 sb.append(", ");

                 sb.append("Age:" + getAge());

                 sb.append(".");

                 return sb.toString();

     }

}

employees.xml

<?xml version="1.0" encoding="UTF-8"?>

<Personnel>

  <Employee type="permanent">

        <Name>Seagull</Name>

        <Id>3674</Id>

        <Age>34</Age>

   </Employee>

  <Employee type="contract">

        <Name>Robin</Name>

        <Id>3675</Id>

        <Age>25</Age>

    </Employee>

  <Employee type="permanent">

        <Name>Crow</Name>

        <Id>3676</Id>

        <Age>28</Age>

    </Employee>

</Personnel>