import androidx.appcompat.app.AppCompatActivity;

import android.os.Bundle;
import android.view.View;
import android.widget.EditText;
import android.widget.TextView;

public class MainActivity extends AppCompatActivity {

    TextView output;
    EditText answer;

    String ans = "";

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

        output = (TextView) findViewById(R.id.textView);
        String s = "123";
        int d = (int) Integer.parseInt(s);
        output.setText(d);
    }
}