Question

Write a program that can read an XML file based on a hobby of yours. Your XML file should contain at least 5 items and that one of the details tracked must be "cost". Create a program that reads through the items in your XML file and adds the total value of the cost of each item. Display the total cost to the user. (No other output is required.) Your project should be named LastnameFirstnameHW7. Before Zipping your project please place the XML data file in the top-level folder of your Netbeans project.

Answer 1

I have solved the required problem please place the both file in NetBeans.

The Below XML created for solution save as hobbies.xml

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

<Hobbies>

<Hobby>

<name>Singing</name>

<cost>245</cost>

</Hobby>

<Hobby>

<name>Watching Movie</name>

<cost>452</cost>

</Hobby>

<Hobby>

<name>Playing Game</name>

<cost>300</cost>

</Hobby>

<Hobby>

<name>Coding</name>

<cost>200</cost>

</Hobby>

<Hobby>

<name>Football</name>

<cost>400</cost>

</Hobby>

</Hobbies>

below java file created for parsing the xml save below file as XMLParserHW7.java or any other name if u want but make sure the file should have extension of .java

import java.io.File;

import javax.xml.parsers.DocumentBuilder;

import javax.xml.parsers.DocumentBuilderFactory;

import org.w3c.dom.Document;

import org.w3c.dom.Element;

import org.w3c.dom.Node;

import org.w3c.dom.NodeList;

/**

*This class will used to parse xml and sum the total cost

*/

public class XMLParserHW7 {

public static void main(String[] args) {

//taken cost variable for storing cost

double cost=0;

//name of xml file

String fileName = "hobbies.xml";

File xmlFile = new File(fileName);

//using java library

DocumentBuilderFactory dbf = DocumentBuilderFactory.newInstance();

DocumentBuilder builder;

try{

builder = dbf.newDocumentBuilder();

//parsing xml file in Document instance

Document doc = builder.parse(xmlFile);

doc.getDocumentElement().normalize();

//root name of XML as per given in file

NodeList nodeL = doc.getElementsByTagName("Hobby");

//looping through the nodes of XML file

for(int i=0;i<nodeL.getLength();i++)

{

Node node = nodeL.item(i);

if(node.getNodeType()==Node.ELEMENT_NODE)

{

Element ele = (Element) node;

//parsing the String value to double

//and adding to cost

//getting the value from XML file with have tag name

//have cost as similar way can get value of any tag name

//please cast as per your requirement

cost+=Double.parseDouble(ele

.getElementsByTagName("cost")

.item(0)

.getTextContent()) ;

}

}

}

catch(Exception e)

{

System.out.println(e.getMessage());

}

//printing the total cost

System.out.println("Total Cost = "+cost);

}

}

OUTPUT:

<terminated> XMLParserHW7 [Java Application] C:AProgram Files Javajre1.8.013 otal Cost = 1597.0

please do let me know if u have any doubts... i will be replying ASAP...