public class MainActivity extends AppCompatActivity $\{$

@override

protected void oncreate$($Bundle savedInstanceState$)\{$

super. oncreate $($savedInstanceState$)$;

setContentView$($R$.$layout.activity$\_$main$)$;

findViewById$($R$.$id$.$button$).$ setOnClickListener $($new

android.view.View.OnClickListener$()\{$

@override public void onclick$($android$.$view. View view$)\{$

$\}\})$;

$\}$

$\}$