Multipliction table app in Android Studio (JAVA)

package com.example.multiplicationtable;

import androidx.appcompat.app.AppCompatActivity;

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

public class MainActivity extends AppCompatActivity {
    TextView textView;
    EditText num;
    Button button;
    String result;

    @Override
    protected void onCreate(Bundle savedInstanceState) {
        super.onCreate(savedInstanceState);
        setContentView(R.layout.activity_main);
        textView = findViewById(R.id.textView);
        num = findViewById(R.id.num);
        button = findViewById(R.id.button);

        button.setOnClickListener(new View.OnClickListener() {
            @Override
            public void onClick(View v) {

                  int  sum = Integer.parseInt(num.getText().toString());
                    result = " ";
                for(int i = 1; i<=10; i++){

                    result += sum + " " +"*" + i +" = " + (sum*i) + "\n";
                    textView.setText(result);
                }

            }
        });
    }
}