title: check if string contains number larger than a number
body: <p>i have a String in my app that receive by sms always changing and sometimes is a number with 2 decimal places and sometime without decimal places like below :</p>
  
  <pre><code>String sms = "12.02";
  String sms = "105";
  </code></pre>
  
  <p>how can i Comparison number inside the String for example if larger than 5 do something in app ??</p>
  
  <p>the decimal places not important</p>
  
  <p>sorry for my poor language</p>