title: replace in java using regular expression
body: <p>suppose I have a string </p>
  
  <pre><code>  String = ".... helllo.... good \"morning\" .....\" "
  </code></pre>
  
  <p>I want to get output as</p>
  
  <pre><code>  helllo good morning 
  </code></pre>
  
  <p>How can I do that using regular expression in Java?</p>