import android.os$.$Bundle;

public class MainActivity extends AppCompatActivity $\{$

public static int result;

public static int number$01$;

public static int number$02$;

@override

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

super.onCreate$($savedinstanceState$)$;

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

findViewByld$($R$.$id$.$Add$).$setOnClickListener$($new android.view.View.OnClickListener$()\{$

@Override public void onClick$($android$.$view.View view$)\{$

android. widget.EditText InputWidget $=$ findViewByld$($

R$.$id$.$ NumberO$1)$;

number$01=$ Integer.parselnt$($InputWidget$.$getText$().$toString$())$;

InputWidget $=$ findViewByld$($

R$.$id$.$ NumberO$2)$;

number$02=$ Integer.parseInt$($InputWidget$.$getText$().$toString$())$;

result $=$ numberO$1+$numberO$2$;

android. widget.EditText OutputWidget $=$ findViewByld$($

R$.$id$.$ Result$)$;

OutputWidget.setText$($Integer$.$toString$($result$))$;

$\}\})$;

findViewByld$($R$.$id$.$Subtract$).$setOnClickListener$($new android.view.View.OnClickListener$()\{$

@Override public void onClick$($android$.$view.View view$)\{$

android. widget.EditText InputWidget $=$ findViewByld$($

R$.$id$.$ Number$01)$;

number$01=$ Integer.parseInt$($InputWidget$.$getText$().$toString$())$;

InputWidget $=$ findViewByld$($

R$.$id$.$ NumberO$2)$;

number$02=$ Integer.parselnt$($InputWidget$.$getText$().$toString$())$;

result $=$ number$01-$numberO$2$;

android. widget.EditText OutputWidget $=$ findViewByld$($

R$.$id$.$ Result$)$;

OutputWidget.setText$($Integer$.$toString$($result$))$;

$\}\})$;

$\}$

$\}$