New method in MainActivity.java

/**
 * This method displays the given text on the screen.
 */
private void displayMessage(String message) {
    TextView priceTextView = (TextView) findViewById(R.id.price_text_view);
    priceTextView.setText(message);
}

This string message will help to crash any business in few time!!

public void submit (View view){
String priceTextView = "Free";
displayMessage(priceTextView);
}

/**

• This method displays the given text on the screen.
  */
  private void displayMessage(String message) {
  TextView priceTextView = (TextView) findViewById(R.id.price_text_view);
  priceTextView.setText(message);
  }

Thank you! 😊

ok thanks