Unit Converter in Android Studio (JAVA)

package com.example.unconvert;

import android.support.v7.app.AppCompatActivity;
import android.os.Bundle;
import android.view.View;
import android.widget.Button;
import android.widget.EditText;
import android.widget.TextView;
import android.widget.Toast;

public class MainActivity extends AppCompatActivity {
    private Button button;
    private TextView textView2;
    private EditText editText;
    @Override
    protected void onCreate(Bundle savedInstanceState) {
        super.onCreate(savedInstanceState);
        setContentView(R.layout.activity_main);
        button = findViewById(R.id.button);
        textView2 = findViewById(R.id.textView2);
        editText = findViewById(R.id.edit2);
        button.setOnClickListener(new View.OnClickListener() {
            @Override
            public void onClick(View v) {
                Toast.makeText(MainActivity.this, "Hi clicked Listner worked", Toast.LENGTH_SHORT).show();
                String s = editText.getText().toString();
               int kg = Integer.parseInt(s);
               double pound  = 2.205 * kg;
               textView2.setText(""+pound);
            }
        });
    }
}