How to create a Listview action provider in android

public

class Mainclass extends ListActivity {

String

apps[]={"MainActivity","Games","Shareclass","TOPAPPS","Lifestyle","Latestdownloads","angrybirds","updates","newandroidapps","new gadgets","android phones","new dell Laptops"};

String

clickapps;

Class<?>

ourclass;

@Override

protected void onCreate(Bundle savedInstanceState) {

// TODO Auto-generated method stub

super.onCreate(savedInstanceState);

//setContentView(R.layout.second);

//ListView lv=(ListView)findViewById(R.id.listView1);

setListAdapter(

new ArrayAdapter<String>(Mainclass.this, android.R.layout.simple_list_item_1, apps));

  }

@Override

protected void onListItemClick(ListView l, View v, int position, long id) {

// TODO Auto-generated method stub

super.onListItemClick(l, v, position, id);

clickapps=apps[position];

try {

ourclass = Class.forName("com.example.internetactionbar."+clickapps);

}

catch (ClassNotFoundException e) {

// TODO Auto-generated catch block

e.printStackTrace();

}

Intent intent=

new Intent(Mainclass.this,ourclass);

startActivity(intent);

output will the following :