title: Regular Expression not matching in java replaceAll() method
body: <p>I have an input string - </p>
  
  <pre><code>f.dollar_sales,f.unit_sales
  </code></pre>
  
  <p>I want to use String.replaceAll(regex,regex) method to get an output string as follows:</p>
  
  <pre><code>dollar_sales,unit_sales
  </code></pre>
  
  <p>I used the following:</p>
  
  <pre><code>fieldList.replaceAll("[a-zA-Z]\\Q.\\E"," ");
  </code></pre>
  
  <p>where fieldList is String variable where I've stored input String.</p>
  
  <p>Can someone point out where I've made a mistake?</p>