Getting Xml Tag Values using Stack in Java (Applicable to HTML tags) - Parsing

Method Functionality

•  This method is used to parse the given XML / HTML Entry containing tags.
•  The values inside the tags are pushed into the Stack.
•  You can retrieve the values later from the stack by knowing the depth of the Element

Input

<student>

         <name>Nijin</name>

         <college>SSN</college>

         <city>Chennai</city>

</student>

Output

[Nijin, SSN,Chennai]

Program

public String getValueFromXmlKey(String xmlEntry, int pos){
String value= null;
boolean tagDetected = false;

Stack<String> stack = new Stack<String>();

//Converting String to char Array
char[] xmlEntryArray = xmlEntry.toCharArray();

String elements = "";
for(char c:xmlEntryArray){
if(tagDetected==false){
if(c=='<'){ //Searching for opening tag
tagDetected = true;
if(elements!=""){
stack.push(elements);
}
elements = "";
}
else{
elements += c;
}
}
else{
if(c=='>'){ //Searching for closing tag
tagDetected = false;
}
}
}
System.out.println(stack.get(pos));
return stack.get(pos);
}