title: I want to change "," for "." in the priceString
body: <p>Working on Android app in the Android Studio</p>
  
  <p>But there is a pop-up window on replaceAll that says: "Result of this will be ignored"</p>
  
  <pre><code> String priceString = mPriceEditText.getText().toString().trim();
  
  if(priceString.contains(",")){
      priceString.replaceAll(",",".");
  }
  </code></pre>
  
  <p>How could I fix this code?</p>