android create and read xml from sdcard -

i use 2 button, 1st button create xml file in sdcard
, 2nd button read xml.
code :

string xml_root; listview lv_emp; static final string key_name = "name"; static final string key_age = "age"; list<hashmap<string, string>> emphashmap; list<classemp> emplist = null; @override protected void oncreate(bundle savedinstancestate) {     super.oncreate(savedinstancestate);     setcontentview(r.layout.activity_empacc);      xml_root = "<?xml version=\"1.0\" encoding=\"utf-8\"?>" + "\n" +             "<employees>" + "\n" +             "\t" + "<emp>" + "\n" +             "\t" +  "\t" + "<name>" + "jame" + "</name>" + "\n" +             "\t" +  "\t" + "<age>" + "17" + "</age>" + "\n" +             "\t" +  "</emp>" + "\n" +             "\t" +  "<emp>" + "\n" +             "\t" +  "\t" + "<name>" + "natalie" + "</name>" + "\n" +             "\t" +  "\t" + "<age>" + "20" + "</age>" + "\n" +             "\t" + "</emp>" + "\n" +             "</employees>";      button bt_create2 = (button)findviewbyid(r.id.bt_createfilet2);     bt_create2.setonclicklistener(new view.onclicklistener() {         @override         public void onclick(view v) {             try {                 file newfolder = new file(environment.getexternalstoragedirectory(), "testfolder");                 if (!newfolder.exists()) {                     newfolder.mkdir();                 }                  file file = new file(newfolder, "test" + ".xml");                 if (!file.exists()) {                     file.createnewfile();                     fileoutputstream fout = new fileoutputstream(file);                     outputstreamwriter myoutwriter =new outputstreamwriter(fout);                     myoutwriter.append(xml_root);                     myoutwriter.close();                     fout.close();                 }             } catch (exception e) {                 system.out.println("e: " + e);             }         }     });      button bt_read2 = (button)findviewbyid(r.id.bt_readfilet2);     bt_read2.setonclicklistener(new view.onclicklistener() {         @override         public void onclick(view v) {             try {                 lv_emp = (listview)findviewbyid(r.id.lv_emp);                 file file = new file(environment.getexternalstoragedirectory() + "testfolder/test.xml");                 inputstream = new fileinputstream(file.getpath());                 xmlpullparseremp parser_emp = new xmlpullparseremp();                 emplist = parser_emp.parse(is);                 binderdataemp bd_emp = new binderdataemp(empacc.this, emphashmap);                 lv_emp.setadapter(bd_emp);             }             catch (exception e){                 e.printstacktrace();             }         }     }); } 

with code, create test.xml in testfolder on sdcard.
can't read it.
how fix ?

you missing /(slash) during reading file

use , retry:

file file = new file(environment.getexternalstoragedirectory() + "/testfolder/test.xml");