title: How to represent empty char in Java Character class
body: <p>I want to represent an empty character in Java as  <code>""</code> in String...</p>
  
  <p>Like that <code>char ch = an empty character;</code></p>
  
  <p>Actually I want to replace a character without leaving space. </p>
  
  <p>I think it might be sufficient to understand what this means: no character not even space. </p>