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public class kk extends Activity {

    private EditText edtName;
    private EditText edtPas;
    private TextView tv;


    @Override
    protected void onCreate(Bundle savedInstanceState) {
        super.onCreate(savedInstanceState);

SZooo

public class openHelper extends SQLiteOpenHelper {

    private static final int VERSION = 1;

    public openHelper(Context context, String name, SQLiteDatabase.CursorFactory factory, int version) {
        super(context, name, factory, version);
    }

    public openHelper(Context context,String name){
        this(context,name,VERSION);

SZooo

public class bigTest extends Activity {
    private Button btn;

    @Override
    protected void onCreate(Bundle savedInstanceState) {
        super.onCreate(savedInstanceState);
        setContentView(R.layout.big);

        btn = (Button) findViewById(R.id.btn);

SZooo

public class HandlerTest extends Activity{
  private Button button ;
  private TextView view;
  private Handler handler;

  protected void onCreat(Bundle savedInstanceState){
     super.onCreate(savedInstanceState);
        setContentView(R.layout.testView);
    
      button = (Button) findViewById(R.id.btn);