java - list item does not work in android studio -

after running application using android studio ,when clicked on list item nothing happen, wrong on code?

package com.asaad.siag.asaad;   import android.app.listactivity; import android.content.intent; import android.os.bundle; import android.view.view; import android.widget.arrayadapter; import android.widget.listview; import static java.lang.string.valueof;  public class menu extends listactivity{  string classes[] = {"mainactivity", "example 1", "example 2", "example 3", "example 4"         , "example 5", "example 6"}; @override protected void oncreate(bundle v){     super.oncreate(v);     setlistadapter(new arrayadapter<string>(menu.this, android.r.layout.simple_list_item_1,classes)); } @override protected void onlistitemclick(listview l, view v, int position, long id) {       super.onlistitemclick(l, v, position, id);     string cheese = classes [position];     try {         class ourclass = class.forname("com.asaad.siag.asaad "+ cheese);         intent ourintent = new intent(menu.this, ourclass);         startactivity(ourintent);     }catch (classnotfoundexception e){         e.printstacktrace();     } }} 

i think because class.forname

you have not listview here. implement listview in xml file, on activity , follow this:

listview lv = (listview)findviewbyid(r.id.your_list_view);  lv.setonitemclicklistener(new onitemclicklistener() { @override  public void onitemclick(adapterview<?> arg0, view arg1,int position, long arg3) {     //do st } });