Ler arquivos XML em Java é muito diferente de ler outros arquivos como .docx e .txt porque o arquivo XML contém dados entre as tags. Java fornece muitas maneiras de analisar um arquivo XML. Existem dois analisadores em Java que analisam um arquivo XML:

• Java DOM Analisador
• Java CORRETO Analisador

Analisador Java DOM

O API DOM fornece as classes para ler e gravar um arquivo XML. Podemos criar, excluir, modificar e reorganizar o nó usando a API DOM. O analisador DOM analisa todo o arquivo XML e cria um DOM objeto na memória. Ele modela um arquivo XML em um estrutura de árvore para fácil travessia e manipulação. No DOM, tudo em um arquivo XML é um nó . O nó representa um componente de um arquivo XML. O analisador DOM é lento em processo e ocupa muita memória quando carrega um arquivo XML na memória.

Devemos ter seguido o processo para ler um arquivo XML em Java:

Instancie o arquivo XML:O analisador DOM carrega o arquivo XML na memória e considera cada tag como um elemento.Obtenha o nó raiz:A classe de documento fornece o getDocumentElement() método para obter o nó raiz e o elemento do arquivo XML.Obtenha todos os nós:O getElementByTagName() O método recupera todos os nomes de tags específicos do arquivo XML. Onde ELEMENT_NODE tipo refere-se a um nó não textual que possui subelementos. Se precisarmos acessar todos os nós desde o início, incluindo o nó raiz, podemos chamar recursivamente o método getChildElement().Obtenha o nó por valor de texto:Podemos usar getElementByTextValue() método para procurar um nó pelo seu valor.Obtenha o nó por valor do atributo:Se quisermos pesquisar um nó pelo valor de um atributo específico, podemos usar o método getElementByTagName() junto com o método getAttribute().

Etapas para ler arquivo XML em Java usando Eclipse

Passo 1: Crie um simples Java projeto.

Passo 2: Crie um arquivo de classe e forneça um nome de arquivo de classe. Criamos o arquivo de classe com o nome ReadXMLFileExample1 .

Etapa 3: Escreva o seguinte código.

Passo 4: Download dom-2.3.0-jaxb-1.0.6.jar arquivo: Clique aqui...

Etapa 5: Criar uma biblioteca pasta no projeto.

Etapa 6: cópia de dom-2.3.0-jaxb-1.0.6.jar arquivo e cole na pasta lib.

Etapa 7: Colocou o caminho de classe :

Clique com o botão direito no projeto-> Caminho de construção-> Configurar caminho de construção-> Adicionar JARs externos-> Selecione o arquivo JAR-> clique no botão Abrir-> Aplicar e fechar.

redes de computadores

Etapa 8: Criar um XML arquivo. Criamos um arquivo XML com nome ArquivoXML.xml e escreva os seguintes dados nele.

Etapa 9: Execute o projeto.

Criando arquivo XML: ArquivoXML.xml

 101 Naman Kumar Math 83 102 Kapil Kumar Chemistry 60 103 Harsh Singh English 70 104 Jitesh Singh Physics 76 

Exemplo de leitura de arquivo XML usando DOM Parser

assistente do comissário de polícia

 import javax.xml.parsers.DocumentBuilderFactory; import javax.xml.parsers.DocumentBuilder; import org.w3c.dom.Document; import org.w3c.dom.NodeList; import org.w3c.dom.Node; import org.w3c.dom.Element; import java.io.File; public class ReadXMLFileExample1 { public static void main(String argv[]) { try { //creating a constructor of file class and parsing an XML file File file = new File(&apos;F:\XMLFile.xml&apos;); //an instance of factory that gives a document builder DocumentBuilderFactory dbf = DocumentBuilderFactory.newInstance(); //an instance of builder to parse the specified xml file DocumentBuilder db = dbf.newDocumentBuilder(); Document doc = db.parse(file); doc.getDocumentElement().normalize(); System.out.println(&apos;Root element: &apos; + doc.getDocumentElement().getNodeName()); NodeList nodeList = doc.getElementsByTagName(&apos;student&apos;); // nodeList is not iterable, so we are using for loop for (int itr = 0; itr <nodelist.getlength(); itr++) { node system.out.println('
node name :' + node.getnodename()); if (node.getnodetype()="=" node.element_node) element eelement="(Element)" node; system.out.println('student id: '+ eelement.getelementsbytagname('id').item(0).gettextcontent()); system.out.println('first name: eelement.getelementsbytagname('firstname').item(0).gettextcontent()); system.out.println('last eelement.getelementsbytagname('lastname').item(0).gettextcontent()); system.out.println('subject: eelement.getelementsbytagname('subject').item(0).gettextcontent()); system.out.println('marks: eelement.getelementsbytagname('marks').item(0).gettextcontent()); } catch (exception e) e.printstacktrace(); < pre> <p> <strong>Output:</strong> </p> <pre> Root element: class Node Name: student Student id: 101 First Name: Naman Last Name: Kumar Subject: Math Marks: 83 Node Name: student Student id: 102 First Name: Kapil Last Name: Kumar Subject: Chemistry Marks: 60 Node Name: student Student id: 103 First Name: Harsh Last Name: Singh Subject: English Marks: 70 Node Name: student Student id: 104 First Name: Jitesh Last Name: Singh Subject: Physics Marks: 76 </pre> <p>Let&apos;s see another example of reading xml file.</p> <p> <strong>Example of reading XML file using DOM Parser</strong> </p> <p>The following example reads the same XML file <strong>XMLFile.xml</strong> , and showing that how to loop the node one by one. It prints the node value, name and attribute if any.</p> <p> <strong>Example</strong> </p> <pre> import java.io.File; import javax.xml.parsers.DocumentBuilder; import javax.xml.parsers.DocumentBuilderFactory; import org.w3c.dom.Document; import org.w3c.dom.NamedNodeMap; import org.w3c.dom.Node; import org.w3c.dom.NodeList; public class ReadXMLFileExample2 { public static void main(String[] args) { try { File file = new File(&apos;F:\XMLFile.xml&apos;); DocumentBuilder documentBuilder = DocumentBuilderFactory.newInstance().newDocumentBuilder(); Document document = documentBuilder.parse(file); System.out.println(&apos;Root element: &apos;+ document.getDocumentElement().getNodeName()); if (document.hasChildNodes()) { printNodeList(document.getChildNodes()); } } catch (Exception e) { System.out.println(e.getMessage()); } } private static void printNodeList(NodeList nodeList) { for (int count = 0; count <nodelist.getlength(); count++) { node elemnode="nodeList.item(count);" if (elemnode.getnodetype()="=" node.element_node) get name and value system.out.println('
node [open]'); system.out.println('node content=" + elemNode.getTextContent()); if (elemNode.hasAttributes()) { NamedNodeMap nodeMap = elemNode.getAttributes(); for (int i = 0; i &lt; nodeMap.getLength(); i++) { Node node = nodeMap.item(i); System.out.println(" attr : ' + node.getnodename()); system.out.println('attr node.getnodevalue()); } (elemnode.haschildnodes()) recursive call the has child nodes printnodelist(elemnode.getchildnodes()); [close]'); < pre> <p> <strong>Output:</strong> </p> <pre> Root element: class Node Name =class [OPEN] Node Content = 101 Naman Kumar Maths 83 102 Kapil Kumar Chemistry 60 103 Harsh Singh English 70 104 Jitesh Singh Physics 76 Node Name =student [OPEN] Node Content = 101 Naman Kumar Maths 83 Node Name =id [OPEN] Node Content =101 Node Name =id [CLOSE] Node Name =firstname [OPEN] Node Content =Naman Node Name =firstname [CLOSE] Node Name =lastname [OPEN] Node Content =Kumar Node Name =lastname [CLOSE] Node Name =subject [OPEN] Node Content =Math Node Name =subject [CLOSE] Node Name =marks [OPEN] Node Content =83 Node Name =marks [CLOSE] Node Name =student [CLOSE] Node Name =student [OPEN] Node Content = 102 Kapil Kumar Chemistry 60 Node Name =id [OPEN] Node Content =102 Node Name =id [CLOSE] Node Name =firstname [OPEN] Node Content =Kapil Node Name =firstname [CLOSE] Node Name =lastname [OPEN] Node Content =Kumar Node Name =lastname [CLOSE] Node Name =subject [OPEN] Node Content =Chemistry Node Name =subject [CLOSE] Node Name =marks [OPEN] Node Content =60 Node Name =marks [CLOSE] Node Name =student [CLOSE] Node Name =student [OPEN] Node Content = 103 Harsh Singh English 70 Node Name =id [OPEN] Node Content =103 Node Name =id [CLOSE] Node Name =firstname [OPEN] Node Content =Harsh Node Name =firstname [CLOSE] Node Name =lastname [OPEN] Node Content =Singh Node Name =lastname [CLOSE] Node Name =subject [OPEN] Node Content =English Node Name =subject [CLOSE] Node Name =marks [OPEN] Node Content =70 Node Name =marks [CLOSE] Node Name =student [CLOSE] Node Name =student [OPEN] Node Content = 104 Jitesh Singh Physics 76 Node Name =id [OPEN] Node Content =104 Node Name =id [CLOSE] Node Name =firstname [OPEN] Node Content =Jitesh Node Name =firstname [CLOSE] Node Name =lastname [OPEN] Node Content =Singh Node Name =lastname [CLOSE] Node Name =subject [OPEN] Node Content =Physics Node Name =subject [CLOSE] Node Name =marks [OPEN] Node Content =76 Node Name =marks [CLOSE] Node Name =student [CLOSE] Node Name =class [CLOSE] </pre> <h2>Java SAX Parser</h2> <p>Java SAX parser stands for <strong>Simple API</strong> for <strong>XML</strong> . SAX parser parses an XML file <strong>line by line</strong> . It triggers events when it encounters the opening tag, closing tag, and character data in an xml file. SAX parser is also called the <strong>event-based parser</strong> .</p> <p>SAX parser does not load any XML file into memory. It does not create any object representation of the XML document. SAX parser uses call back function to inform clients of the XML document structure. It is <strong>faster</strong> and uses <strong>less memory</strong> than DOM parser.</p> <p>SAX is a <strong>streaming interface</strong> for XML, which means that XML file parses in sequential order starting at the top of the document, and ending with the closing of the root element.</p> <p> <strong>Example of reading XML file using SAX parser</strong> </p> <pre> 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 ReadXMLFileExample3 { public static void main(String args[]) { try { SAXParserFactory factory = SAXParserFactory.newInstance(); SAXParser saxParser = factory.newSAXParser(); DefaultHandler handler = new DefaultHandler() { boolean id = false; boolean firstname = false; boolean lastname = false; boolean subject = false; boolean marks = false; //parser starts parsing a specific element inside the document public void startElement(String uri, String localName, String qName, Attributes attributes) throws SAXException { System.out.println(&apos;Start Element :&apos; + qName); if(qName.equalsIgnoreCase(&apos;Id&apos;)) { id=true; } if (qName.equalsIgnoreCase(&apos;FIRSTNAME&apos;)) { firstname = true; } if (qName.equalsIgnoreCase(&apos;LASTNAME&apos;)) { lastname = true; } if (qName.equalsIgnoreCase(&apos;SUBJECT&apos;)) { subject = true; } if (qName.equalsIgnoreCase(&apos;MARKS&apos;)) { marks = true; } } //parser ends parsing the specific element inside the document public void endElement(String uri, String localName, String qName) throws SAXException { System.out.println(&apos;End Element:&apos; + qName); } //reads the text value of the currently parsed element public void characters(char ch[], int start, int length) throws SAXException { if (id) { System.out.println(&apos;ID : &apos; + new String(ch, start, length)); id = false; } if (firstname) { System.out.println(&apos;First Name: &apos; + new String(ch, start, length)); firstname = false; } if (lastname) { System.out.println(&apos;Last Name: &apos; + new String(ch, start, length)); lastname = false; } if (subject) { System.out.println(&apos;Subject: &apos; + new String(ch, start, length)); subject = false; } if (marks) { System.out.println(&apos;Marks : &apos; + new String(ch, start, length)); marks = false; } } }; saxParser.parse(&apos;F:\XMLFile.xml&apos;, handler); } catch (Exception e) { e.printStackTrace(); } } } </pre> <p> <strong>Output:</strong> </p> <pre> Start Element: class Start Element: student Start Element: id ID: 101 End Element: id Start Element: firstname First Name: Naman End Element: firstname Start Element: lastname Last Name: Kumar End Element: lastname Start Element: subject Subject: Math End Element: subject Start Element: marks Marks: 83 End Element: marks End Element: student Start Element: student Start Element: id ID: 102 End Element: id Start Element: firstname First Name: Kapil End Element: firstname Start Element: lastname Last Name: Kumar End Element: lastname Start Element: subject Subject: Chemistry End Element: subject Start Element: marks Marks: 60 End Element: marks End Element: student Start Element: student Start Element: id ID: 103 End Element: id Start Element: firstname First Name: Harsh End Element: firstname Start Element: lastname Last Name: Singh End Element: lastname Start Element: subject Subject: English End Element: subject Start Element: marks Marks: 70 End Element: marks End Element: student Start Element: student Start Element: id ID: 104 End Element: id Start Element: firstname First Name: Jitesh End Element: firstname Start Element: lastname Last Name: Singh End Element: lastname Start Element: subject Subject: Physics End Element: subject Start Element: marks Marks: 76 End Element: marks End Element: student End Element: class </pre> <hr></nodelist.getlength();></pre></nodelist.getlength();>

Vamos ver outro exemplo de leitura de arquivo xml.

Exemplo de leitura de arquivo XML usando DOM Parser

O exemplo a seguir lê o mesmo arquivo XML ArquivoXML.xml e mostrando como fazer o loop do nó um por um. Ele imprime o valor do nó, nome e atributo, se houver.

Exemplo

 import java.io.File; import javax.xml.parsers.DocumentBuilder; import javax.xml.parsers.DocumentBuilderFactory; import org.w3c.dom.Document; import org.w3c.dom.NamedNodeMap; import org.w3c.dom.Node; import org.w3c.dom.NodeList; public class ReadXMLFileExample2 { public static void main(String[] args) { try { File file = new File(&apos;F:\XMLFile.xml&apos;); DocumentBuilder documentBuilder = DocumentBuilderFactory.newInstance().newDocumentBuilder(); Document document = documentBuilder.parse(file); System.out.println(&apos;Root element: &apos;+ document.getDocumentElement().getNodeName()); if (document.hasChildNodes()) { printNodeList(document.getChildNodes()); } } catch (Exception e) { System.out.println(e.getMessage()); } } private static void printNodeList(NodeList nodeList) { for (int count = 0; count <nodelist.getlength(); count++) { node elemnode="nodeList.item(count);" if (elemnode.getnodetype()="=" node.element_node) get name and value system.out.println(\'
node [open]\'); system.out.println(\'node content=" + elemNode.getTextContent()); if (elemNode.hasAttributes()) { NamedNodeMap nodeMap = elemNode.getAttributes(); for (int i = 0; i &lt; nodeMap.getLength(); i++) { Node node = nodeMap.item(i); System.out.println(" attr : \' + node.getnodename()); system.out.println(\'attr node.getnodevalue()); } (elemnode.haschildnodes()) recursive call the has child nodes printnodelist(elemnode.getchildnodes()); [close]\'); < pre> <p> <strong>Output:</strong> </p> <pre> Root element: class Node Name =class [OPEN] Node Content = 101 Naman Kumar Maths 83 102 Kapil Kumar Chemistry 60 103 Harsh Singh English 70 104 Jitesh Singh Physics 76 Node Name =student [OPEN] Node Content = 101 Naman Kumar Maths 83 Node Name =id [OPEN] Node Content =101 Node Name =id [CLOSE] Node Name =firstname [OPEN] Node Content =Naman Node Name =firstname [CLOSE] Node Name =lastname [OPEN] Node Content =Kumar Node Name =lastname [CLOSE] Node Name =subject [OPEN] Node Content =Math Node Name =subject [CLOSE] Node Name =marks [OPEN] Node Content =83 Node Name =marks [CLOSE] Node Name =student [CLOSE] Node Name =student [OPEN] Node Content = 102 Kapil Kumar Chemistry 60 Node Name =id [OPEN] Node Content =102 Node Name =id [CLOSE] Node Name =firstname [OPEN] Node Content =Kapil Node Name =firstname [CLOSE] Node Name =lastname [OPEN] Node Content =Kumar Node Name =lastname [CLOSE] Node Name =subject [OPEN] Node Content =Chemistry Node Name =subject [CLOSE] Node Name =marks [OPEN] Node Content =60 Node Name =marks [CLOSE] Node Name =student [CLOSE] Node Name =student [OPEN] Node Content = 103 Harsh Singh English 70 Node Name =id [OPEN] Node Content =103 Node Name =id [CLOSE] Node Name =firstname [OPEN] Node Content =Harsh Node Name =firstname [CLOSE] Node Name =lastname [OPEN] Node Content =Singh Node Name =lastname [CLOSE] Node Name =subject [OPEN] Node Content =English Node Name =subject [CLOSE] Node Name =marks [OPEN] Node Content =70 Node Name =marks [CLOSE] Node Name =student [CLOSE] Node Name =student [OPEN] Node Content = 104 Jitesh Singh Physics 76 Node Name =id [OPEN] Node Content =104 Node Name =id [CLOSE] Node Name =firstname [OPEN] Node Content =Jitesh Node Name =firstname [CLOSE] Node Name =lastname [OPEN] Node Content =Singh Node Name =lastname [CLOSE] Node Name =subject [OPEN] Node Content =Physics Node Name =subject [CLOSE] Node Name =marks [OPEN] Node Content =76 Node Name =marks [CLOSE] Node Name =student [CLOSE] Node Name =class [CLOSE] </pre> <h2>Java SAX Parser</h2> <p>Java SAX parser stands for <strong>Simple API</strong> for <strong>XML</strong> . SAX parser parses an XML file <strong>line by line</strong> . It triggers events when it encounters the opening tag, closing tag, and character data in an xml file. SAX parser is also called the <strong>event-based parser</strong> .</p> <p>SAX parser does not load any XML file into memory. It does not create any object representation of the XML document. SAX parser uses call back function to inform clients of the XML document structure. It is <strong>faster</strong> and uses <strong>less memory</strong> than DOM parser.</p> <p>SAX is a <strong>streaming interface</strong> for XML, which means that XML file parses in sequential order starting at the top of the document, and ending with the closing of the root element.</p> <p> <strong>Example of reading XML file using SAX parser</strong> </p> <pre> 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 ReadXMLFileExample3 { public static void main(String args[]) { try { SAXParserFactory factory = SAXParserFactory.newInstance(); SAXParser saxParser = factory.newSAXParser(); DefaultHandler handler = new DefaultHandler() { boolean id = false; boolean firstname = false; boolean lastname = false; boolean subject = false; boolean marks = false; //parser starts parsing a specific element inside the document public void startElement(String uri, String localName, String qName, Attributes attributes) throws SAXException { System.out.println(&apos;Start Element :&apos; + qName); if(qName.equalsIgnoreCase(&apos;Id&apos;)) { id=true; } if (qName.equalsIgnoreCase(&apos;FIRSTNAME&apos;)) { firstname = true; } if (qName.equalsIgnoreCase(&apos;LASTNAME&apos;)) { lastname = true; } if (qName.equalsIgnoreCase(&apos;SUBJECT&apos;)) { subject = true; } if (qName.equalsIgnoreCase(&apos;MARKS&apos;)) { marks = true; } } //parser ends parsing the specific element inside the document public void endElement(String uri, String localName, String qName) throws SAXException { System.out.println(&apos;End Element:&apos; + qName); } //reads the text value of the currently parsed element public void characters(char ch[], int start, int length) throws SAXException { if (id) { System.out.println(&apos;ID : &apos; + new String(ch, start, length)); id = false; } if (firstname) { System.out.println(&apos;First Name: &apos; + new String(ch, start, length)); firstname = false; } if (lastname) { System.out.println(&apos;Last Name: &apos; + new String(ch, start, length)); lastname = false; } if (subject) { System.out.println(&apos;Subject: &apos; + new String(ch, start, length)); subject = false; } if (marks) { System.out.println(&apos;Marks : &apos; + new String(ch, start, length)); marks = false; } } }; saxParser.parse(&apos;F:\XMLFile.xml&apos;, handler); } catch (Exception e) { e.printStackTrace(); } } } </pre> <p> <strong>Output:</strong> </p> <pre> Start Element: class Start Element: student Start Element: id ID: 101 End Element: id Start Element: firstname First Name: Naman End Element: firstname Start Element: lastname Last Name: Kumar End Element: lastname Start Element: subject Subject: Math End Element: subject Start Element: marks Marks: 83 End Element: marks End Element: student Start Element: student Start Element: id ID: 102 End Element: id Start Element: firstname First Name: Kapil End Element: firstname Start Element: lastname Last Name: Kumar End Element: lastname Start Element: subject Subject: Chemistry End Element: subject Start Element: marks Marks: 60 End Element: marks End Element: student Start Element: student Start Element: id ID: 103 End Element: id Start Element: firstname First Name: Harsh End Element: firstname Start Element: lastname Last Name: Singh End Element: lastname Start Element: subject Subject: English End Element: subject Start Element: marks Marks: 70 End Element: marks End Element: student Start Element: student Start Element: id ID: 104 End Element: id Start Element: firstname First Name: Jitesh End Element: firstname Start Element: lastname Last Name: Singh End Element: lastname Start Element: subject Subject: Physics End Element: subject Start Element: marks Marks: 76 End Element: marks End Element: student End Element: class </pre> <hr></nodelist.getlength();>

Analisador Java SAX

Analisador Java SAX significa API simples para XML . O analisador SAX analisa um arquivo XML linha por linha . Ele aciona eventos quando encontra a tag de abertura, a tag de fechamento e os dados de caracteres em um arquivo xml. O analisador SAX também é chamado de analisador baseado em eventos .

O analisador SAX não carrega nenhum arquivo XML na memória. Não cria nenhuma representação de objeto do documento XML. O analisador SAX usa a função de retorno de chamada para informar os clientes sobre a estrutura do documento XML. Isso é mais rápido e usa menos memória do que o analisador DOM.

SAX é um interface de transmissão para XML, o que significa que o arquivo XML é analisado em ordem sequencial, começando na parte superior do documento e terminando com o fechamento do elemento raiz.

Exemplo de leitura de arquivo XML usando o analisador SAX

 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 ReadXMLFileExample3 { public static void main(String args[]) { try { SAXParserFactory factory = SAXParserFactory.newInstance(); SAXParser saxParser = factory.newSAXParser(); DefaultHandler handler = new DefaultHandler() { boolean id = false; boolean firstname = false; boolean lastname = false; boolean subject = false; boolean marks = false; //parser starts parsing a specific element inside the document public void startElement(String uri, String localName, String qName, Attributes attributes) throws SAXException { System.out.println('Start Element :' + qName); if(qName.equalsIgnoreCase('Id')) { id=true; } if (qName.equalsIgnoreCase('FIRSTNAME')) { firstname = true; } if (qName.equalsIgnoreCase('LASTNAME')) { lastname = true; } if (qName.equalsIgnoreCase('SUBJECT')) { subject = true; } if (qName.equalsIgnoreCase('MARKS')) { marks = true; } } //parser ends parsing the specific element inside the document public void endElement(String uri, String localName, String qName) throws SAXException { System.out.println('End Element:' + qName); } //reads the text value of the currently parsed element public void characters(char ch[], int start, int length) throws SAXException { if (id) { System.out.println('ID : ' + new String(ch, start, length)); id = false; } if (firstname) { System.out.println('First Name: ' + new String(ch, start, length)); firstname = false; } if (lastname) { System.out.println('Last Name: ' + new String(ch, start, length)); lastname = false; } if (subject) { System.out.println('Subject: ' + new String(ch, start, length)); subject = false; } if (marks) { System.out.println('Marks : ' + new String(ch, start, length)); marks = false; } } }; saxParser.parse('F:\XMLFile.xml', handler); } catch (Exception e) { e.printStackTrace(); } } } 

Saída:

 Start Element: class Start Element: student Start Element: id ID: 101 End Element: id Start Element: firstname First Name: Naman End Element: firstname Start Element: lastname Last Name: Kumar End Element: lastname Start Element: subject Subject: Math End Element: subject Start Element: marks Marks: 83 End Element: marks End Element: student Start Element: student Start Element: id ID: 102 End Element: id Start Element: firstname First Name: Kapil End Element: firstname Start Element: lastname Last Name: Kumar End Element: lastname Start Element: subject Subject: Chemistry End Element: subject Start Element: marks Marks: 60 End Element: marks End Element: student Start Element: student Start Element: id ID: 103 End Element: id Start Element: firstname First Name: Harsh End Element: firstname Start Element: lastname Last Name: Singh End Element: lastname Start Element: subject Subject: English End Element: subject Start Element: marks Marks: 70 End Element: marks End Element: student Start Element: student Start Element: id ID: 104 End Element: id Start Element: firstname First Name: Jitesh End Element: firstname Start Element: lastname Last Name: Singh End Element: lastname Start Element: subject Subject: Physics End Element: subject Start Element: marks Marks: 76 End Element: marks End Element: student End Element: class