Delete records from SQLite table in ANDROID

For COMPLETE TUTORIALS see here :
in DABASEHELPER CLASS :

   public void deleteentry(long ldelete)
      {
        // TODO Auto-generated method stub
       db.delete(DATABASE_TABLE, KEY_ROWID + "=" +ldelete, null);
      }

in Sqlite.java :

   String sdelete =editinfo.getText().toString();
   long ldelete =Long.parseLong(sdelete);
   DBAdapter adaptdelete =new DBAdapter(SQliteExample.this);
   adaptdelete.open();
   adaptdelete.deleteentry(ldelete); //pass the index to be deleted
   adaptdelete.close();