Modification in XML file

[anurag_1226]

please help me i cant move due to this. i want to delete the nodes in xml file.here is what i have tried.

import java.io.BufferedWriter; 
import java.io.File; 
import java.io.FileWriter; 
import java.io.IOException; 
import java.util.List; 
import java.util.regex.Matcher; 
import java.util.regex.Pattern; 

import javax.xml.parsers.DocumentBuilder; 
import javax.xml.parsers.DocumentBuilderFactory; 
import javax.xml.parsers.ParserConfigurationException; 

import org.w3c.dom.Document; 
import org.w3c.dom.Node; 
import org.w3c.dom.NodeList; 
import org.xml.sax.SAXException; 

public class Delete { 

public void del(List<String> li) { 

DocumentBuilderFactory dbf = DocumentBuilderFactory.newInstance(); 
DocumentBuilder db = null; 
Document doc = null; 

for(int u=0;u<li.size();u++){ // list contains d nodevalue whose parent hav to b deleted //eg: li has value "Close_0" 
try { 

db = dbf.newDocumentBuilder(); 
doc = db.parse("tstfile.xml"); 

String nodename = new String(); 
String nodevalue = new String(); 

NodeList listofmenus = doc.getElementsByTagName("Testcase"); 

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

Node testcase = listofmenus.item(i); 
NodeList nodelist1 = testcase.getChildNodes(); 

for (int j = 0; j < nodelist1.getLength(); j++) { 

Node node1 = nodelist1.item(j); 

if (node1.getNodeName().equals("Menu")) { 

NodeList nodelist2 = node1.getChildNodes(); 

for (int k = 0; k < nodelist2.getLength(); k++) { 

Node node2 = nodelist2.item(k); 

if (node2.getNodeName().equals("Nonterminal")) { 

nodename = (node2.getNodeName()); 
nodevalue = (node2.getFirstChild() 
.getNodeValue()); 

if(nodevalue.equals(li.get(u))){ 
System.out.println(nodevalue +""+li.get(u)); 

testcase.removeChild(node1); 
doc.normalize(); 
} 
} 
} 
} 

} 

} 



} catch (ParserConfigurationException e1) { 
e1.printStackTrace(); 
} 
catch (SAXException e) { 
e.printStackTrace(); 
} 
catch (Exception e) { 
e.printStackTrace(); 
} 
} 


} 

}

here is d xml file(tstfile.xml)

<?xml version="1.0" ?> 
<Testsuite> 
<Mode>STRUCTURAL</Mode> 
<Testcase> 
<Test>256</Test> 
<Length>3</Length> 

<Component> 
<Window>mynotepad_0</Window> 
<Nonterminal>AutoGenLabel_0</Nonterminal> 
<Eventtype>LEFTCLICK</Eventtype> 
<Eventvalue>UNKNOWN</Eventvalue> 
</Component> 

<Menu> 
<Window>mynotepad_0</Window> 
<Nonterminal>File_0</Nonterminal> 
</Menu> 

<Menu> 
<Window>mynotepad_0</Window> 
<Nonterminal>Open_0</Nonterminal> 
</Menu> 

</Testcase> 

<Testcase> 
<Test>257</Test> 
<Length>3</Length> 

<Component> 
<Window>mynotepad_0</Window> 
<Nonterminal>AutoGenLabel_0</Nonterminal> 
<Eventtype>LEFTCLICK</Eventtype> 
<Eventvalue>UNKNOWN</Eventvalue> 
</Component> 

<Menu> 
<Window>mynotepad_0</Window> 
<Nonterminal>File_0</Nonterminal> 
</Menu> 

[B][I]<Menu> 
<Window>mynotepad_0</Window> // this type of nodes i want to delete on //basis of Close_0 
<Nonterminal>[U]Close_0[/U]</Nonterminal> 
</Menu> [/I][/B]

</Testcase> 

<Testcase> 
<Test>258</Test> 
<Length>3</Length> 

<Component> 
<Window>mynotepad_0</Window> 
<Nonterminal>AutoGenLabel_0</Nonterminal> 
<Eventtype>LEFTCLICK</Eventtype> 
<Eventvalue>UNKNOWN</Eventvalue> 
</Component> 

<Menu> 
<Window>mynotepad_0</Window> 
<Nonterminal>File_0</Nonterminal> 
</Menu> 

<Menu> 
<Window>mynotepad_0</Window> 
<Nonterminal>Edit_0</Nonterminal> 
</Menu> 

</Testcase> 

<Testcase> 
<Test>259</Test> 
<Length>3</Length> 

<Component> 
<Window>mynotepad_0</Window> 
<Nonterminal>AutoGenLabel_0</Nonterminal> 
<Eventtype>LEFTCLICK</Eventtype> 
<Eventvalue>UNKNOWN</Eventvalue> 
</Component> 

<Menu> 
<Window>mynotepad_0</Window> 
<Nonterminal>File_0</Nonterminal> 
</Menu> 

<Menu> 
<Window>mynotepad_0</Window> 
<Nonterminal>Search_0</Nonterminal> 
</Menu> 
<Menu> 
<Window>mynotepad_0</Window> 
<Nonterminal>Close_0</Nonterminal> 
</Menu> 


</Testcase> 

<Testcase> 
<Test>260</Test> 
<Length>3</Length> 

<Component> 
<Window>mynotepad_0</Window> 
<Nonterminal>AutoGenLabel_0</Nonterminal> 
<Eventtype>LEFTCLICK</Eventtype> 
<Eventvalue>UNKNOWN</Eventvalue> 
</Component> 

<Menu> 
<Window>mynotepad_0</Window> 
<Nonterminal>File_0</Nonterminal> 
</Menu> 

<Menu> 
<Window>mynotepad_0</Window> 
<Nonterminal>Help_0</Nonterminal> 
</Menu> 

</Testcase> 

<Testcase> 
<Test>261</Test> 
<Length>3</Length> 

<Component> 
<Window>mynotepad_0</Window> 
<Nonterminal>AutoGenLabel_0</Nonterminal> 
<Eventtype>LEFTCLICK</Eventtype> 
<Eventvalue>UNKNOWN</Eventvalue> 
</Component> 

<Menu> 
<Window>mynotepad_0</Window> 
<Nonterminal>Edit_0</Nonterminal> 
</Menu> 

<Component> 
<Window>mynotepad_0</Window> 
<Nonterminal>AutoText_0</Nonterminal> 
<Eventtype>SETTEXT</Eventtype> 
<Eventvalue>UNKNOWN</Eventvalue> 
</Component> 

</Testcase> 
</Testsuite>

Moderator Edit: Code tags added -- although code was not formatted to begin with

[Fubarable]

Have you looked at using StAX? This may work well for you: The Java(TM) Web Services Tutorial

Note that folks will have an easier time if you posted formatted code and XML data and use code tags (the latter of which I've added to your post above). Please see the links in my signature regarding these tags.

For instance, which is easier to read, your post, or this?

<?xml version="1.0" ?>
<Testsuite>
	<Mode>STRUCTURAL</Mode>
	<Testcase>
		<Test>256</Test>
		<Length>3</Length>

		<Component>
			<Window>mynotepad_0</Window>
			<Nonterminal>AutoGenLabel_0</Nonterminal>
			<Eventtype>LEFTCLICK</Eventtype>
			<Eventvalue>UNKNOWN</Eventvalue>
		</Component>

		<Menu>
			<!--this type of nodes i want to delete on basis of Close_0 -->
			<Window>mynotepad_0</Window>
			<Nonterminal>File_0</Nonterminal>
		</Menu>

		<Menu>
			<Window>mynotepad_0</Window>
			<Nonterminal>Open_0</Nonterminal>
		</Menu>

	</Testcase>

	<Testcase>
		<Test>257</Test>
		<Length>3</Length>

		<Component>
			<Window>mynotepad_0</Window>
			<Nonterminal>AutoGenLabel_0</Nonterminal>
			<Eventtype>LEFTCLICK</Eventtype>
			<Eventvalue>UNKNOWN</Eventvalue>
		</Component>

		<Menu>
			<Window>mynotepad_0</Window>
			<Nonterminal>File_0</Nonterminal>
		</Menu>

		<Menu>
			<Window>mynotepad_0</Window>
			
			<Nonterminal>Close_0</Nonterminal>
		</Menu>

	</Testcase>

	<Testcase>
		<Test>258</Test>
		<Length>3</Length>

		<Component>
			<Window>mynotepad_0</Window>
			<Nonterminal>AutoGenLabel_0</Nonterminal>
			<Eventtype>LEFTCLICK</Eventtype>
			<Eventvalue>UNKNOWN</Eventvalue>
		</Component>

		<Menu>
			<Window>mynotepad_0</Window>
			<Nonterminal>File_0</Nonterminal>
		</Menu>

		<Menu>
			<Window>mynotepad_0</Window>
			<Nonterminal>Edit_0</Nonterminal>
		</Menu>

	</Testcase>

	<Testcase>
		<Test>259</Test>
		<Length>3</Length>

		<Component>
			<Window>mynotepad_0</Window>
			<Nonterminal>AutoGenLabel_0</Nonterminal>
			<Eventtype>LEFTCLICK</Eventtype>
			<Eventvalue>UNKNOWN</Eventvalue>
		</Component>

		<Menu>
			<Window>mynotepad_0</Window>
			<Nonterminal>File_0</Nonterminal>
		</Menu>

		<Menu>
			<Window>mynotepad_0</Window>
			<Nonterminal>Search_0</Nonterminal>
		</Menu>
		<Menu>
			<Window>mynotepad_0</Window>
			<Nonterminal>Close_0</Nonterminal>
		</Menu>


	</Testcase>

	<Testcase>
		<Test>260</Test>
		<Length>3</Length>

		<Component>
			<Window>mynotepad_0</Window>
			<Nonterminal>AutoGenLabel_0</Nonterminal>
			<Eventtype>LEFTCLICK</Eventtype>
			<Eventvalue>UNKNOWN</Eventvalue>
		</Component>

		<Menu>
			<Window>mynotepad_0</Window>
			<Nonterminal>File_0</Nonterminal>
		</Menu>

		<Menu>
			<Window>mynotepad_0</Window>
			<Nonterminal>Help_0</Nonterminal>
		</Menu>

	</Testcase>

	<Testcase>
		<Test>261</Test>
		<Length>3</Length>

		<Component>
			<Window>mynotepad_0</Window>
			<Nonterminal>AutoGenLabel_0</Nonterminal>
			<Eventtype>LEFTCLICK</Eventtype>
			<Eventvalue>UNKNOWN</Eventvalue>
		</Component>

		<Menu>
			<Window>mynotepad_0</Window>
			<Nonterminal>Edit_0</Nonterminal>
		</Menu>

		<Component>
			<Window>mynotepad_0</Window>
			<Nonterminal>AutoText_0</Nonterminal>
			<Eventtype>SETTEXT</Eventtype>
			<Eventvalue>UNKNOWN</Eventvalue>
		</Component>

	</Testcase>
</Testsuite>

Best of luck.