java - how to parse some specific nodes of xml using sax or dom based on given condition -

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i new jaxp , stuck have parse xml using either sax or dom. have ask user enter empoyee code , display other nodes of particular employee for ex:if user enters 101 show 

ename:akshay ecode:101 dp no.:10 mgr code=201

i tried alot no results,can help. 

   <employees>     <employee>         <ename>akshay</ename>         <ecode>101</ecode>         <empsal>2100.0</empsal>         <department_code>10</department_code>         <manager_code>201</manager_code>     </employee>     <employee>         <ename>rahul</ename>         <ecode>102</ecode>         <empsal>21000.0</empsal>         <department_code>20</department_code>         <manager_code>202</manager_code>     </employee> </employees>

the code tried parse xml

public class parseusingdom {     public static void main(string[] args) {          try {             documentbuilderfactory factory = documentbuilderfactory                     .newinstance();             documentbuilder builder = factory.newdocumentbuilder();             document document = builder.parse("emp.xml");             nodelist list = document.getelementsbytagname("*");             int count = 0;             {             (int = 0; < list.getlength(); i++) {                 element element = (element) list.item(i);                 string nodename = element.getnodename();                  if (nodename.equals("employee")) {                     count++;                     system.out.println("employee :" + count);                 } else if (nodename.equals("ename")) {                     system.out.println("\tename:\t"                             + element.getchildnodes().item(0).getnodevalue());                 } else if (nodename.equals("ecode")) {                     system.out.println("\tecode:\t"                             + element.getchildnodes().item(0).getnodevalue());                 } else if (nodename.equals("empsal")) {                     system.out.println("\tempsal:\t"                             + element.getchildnodes().item(0).getnodevalue());                 } else if (nodename.equals("department_code")) {                     system.out.println("\tdepartment_code: "                             + element.getchildnodes().item(0).getnodevalue());                 } else if (nodename.equals("manager_code")) {                     system.out.println("\tmanager code:\t"                             + element.getchildnodes().item(0).getnodevalue());                 }             }         }} catch (parserconfigurationexception e) {             // todo auto-generated catch block             e.printstacktrace();         } catch (saxexception e) {             // todo auto-generated catch block             e.printstacktrace();         } catch (ioexception e) {             // todo auto-generated catch block             e.printstacktrace();         }      }  }

}

this pretty straight forward.

  1. parse xml document documentbuilder.
  2. ask user id. if command line, scanner might help.
  3. select relevant data document. xpath start.

take these steps individually , figure out how them. put , you've got solution.


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