public class MainActivity extends AppCompatActivity $\{$

@override

protected void onCreate $($Bundle savedInstancestate$)\{$

super. on $($reate $($saved InstanceState$)$;

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

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

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

@override public void onClick$($android$.$view.View view$)$ f

$\}\})$;

$\}$

$\}$