title: java - replaceAll() returns PatternSyntaxException
body: <p>I have this code :</p>
  
  <pre><code>    buffer = buffer.replaceAll("(","");
  </code></pre>
  
  <p>That is returning <code>java.util.regex.PatternSyntaxException</code> I don't know why.
  Help, please.</p>