Parsing xml in java -

this part of xml file

 <iostatussummary>          <iostatus_interval_value>                <count>0</count>                <iostatusvalue datainterval="2016-01-16 15:45:30">1.0</iostatusvalue>                <iostatusvalue datainterval="2016-01-16 19:47:29">0.0</iostatusvalue>                 <iostatusvalue datainterval="2016-05-16 13:01:07">1.0</iostatusvalue>                 <iostatusvalue datainterval="2016-05-16 18:51:33">0.0</iostatusvalue>                 <iostatusvalue datainterval="2016-05-27 16:45:50">1.0</iostatusvalue>                  <iostatusvalue datainterval="2016-05-27 20:56:00">0.0</iostatusvalue>                   <iostatusvalue datainterval="2016-06-10 10:21:28">1.0</iostatusvalue>                   <iostatusvalue datainterval="2016-06-10 20:01:17">0.0</iostatusvalue>           </iostatus_interval_value>  </iostatussummary> 

what trying

documentbuilder db1 = documentbuilder db1 = documentbuilderfactory.newinstance().newdocumentbuilder();     inputsource is1 = new inputsource();     is1.setcharacterstream(new stringreader(xmlresult));     document doc1 = db1.parse(is1);      nodelist nlist_interval=doc1.getelementsbytagname("iostatus_interval_value");                 list on = new arraylist();      list off = new arraylist();        (int =0; < nlist_interval.getlenght(); ++ ){         node currentitem2= nlist_interval.item(iter);           element element2 = (element) currentitem2;           string iostatusvalue = element2.getelementsbytagname("iostatusvalue").item(i).gettextcontent();        if(iostatusvalue.equals("1.0"))        {  on.add(element1.getattribute("datainterval")));                                                                    }          if(iostatusvalue.equals("0.0"))         {        off.add("element1.getattribute("datainterval"))");          }         } 

then printing expecting

on = { 2016-01-16 15:45:30" , 2016-05-16 13:01:07 , 2016-05-27 16:45:50,2016-06-10 10:21:28}

off = { 2016-01-16 19:47:29, 2016-05-16 18:51:33, 2016-05-27 20:56:00, 2016-06-10 20:01:17 }

i getting list empty , above xml not complete xml part of xml.

but not getting expecting think making logical mistake somewhere because new in this.

thank reading question.

try this:

    string xml = "<iostatussummary><iostatus_interval_value><count>0</count><iostatusvalue datainterval=\"2016-01-16 15:45:30\">1.0</iostatusvalue><iostatusvalue datainterval=\"2016-01-16 19:47:29\">0.0</iostatusvalue><iostatusvalue datainterval=\"2016-05-16 13:01:07\">1.0</iostatusvalue><iostatusvalue datainterval=\"2016-05-16 18:51:33\">0.0</iostatusvalue><iostatusvalue datainterval=\"2016-05-27 16:45:50\">1.0</iostatusvalue><iostatusvalue datainterval=\"2016-05-27 20:56:00\">0.0</iostatusvalue><iostatusvalue datainterval=\"2016-06-10 10:21:28\">1.0</iostatusvalue><iostatusvalue datainterval=\"2016-06-10 20:01:17\">0.0</iostatusvalue></iostatus_interval_value></iostatussummary>";     bytearrayinputstream bais = new bytearrayinputstream(xml.getbytes());     documentbuilder db1 = documentbuilderfactory.newinstance().newdocumentbuilder();     document doc1 = db1.parse(bais);      nodelist nlist_interval = doc1.getelementsbytagname("iostatus_interval_value").item(0).getchildnodes();      list<string> on = new arraylist<string>();     list<string> off = new arraylist<string>();      (int = 0; < nlist_interval.getlength(); i++) {         element element = (element) nlist_interval.item(i);         if (element.gettagname().equals("iostatusvalue")) {             string text = element.gettextcontent();             string interval = element.getattribute("datainterval");             if (text.equals("1.0")) {                 on.add(interval);             }             if (text.equals("0.0")) {                 off.add(interval);             }         }     }     system.out.println(on);     system.out.println(off); 

the main difference in example line:

nodelist nlist_interval = doc1.getelementsbytagname("iostatus_interval_value").item(0).getchildnodes(); 

what list of child elements of first iostatus_interval_value element.