public class MainActivity extends AppCompatActivity {
    EditText editTextad,editTextkw,editTextsaat;
    Button button;
    TextView textView;
    @Override
    protected void onCreate(Bundle savedInstanceState) {
        super.onCreate(savedInstanceState);
        setContentView(R.layout.activity_main);
        editTextad=findViewById(R.id.editTextTextPersonName);
        editTextkw=findViewById(R.id.editTextTextPersonName2);
        editTextsaat=findViewById(R.id.editTextTextPersonName3);
        button=findViewById(R.id.button);
        textView=findViewById(R.id.textView);
        button.setOnClickListener(view -> {
            String ad=editTextad.getText().toString();
            int kw=Integer.parseInt(editTextkw.getText().toString());
            int saat=Integer.parseInt(editTextsaat.getText().toString());
            ElektrikliCihaz elektrikliCihaz= new ElektrikliCihaz();
            elektrikliCihaz.cihazAdi=ad;
            elektrikliCihaz.cihazKw=kw;
            elektrikliCihaz.cihazSaat=saat;
            int sonuc=elektrikliCihaz.aylikTuketim();
            textView.setText(Integer.toString(sonuc));
        });
    }
}