title: Regular Expression in android for password without spaces
body: <p>I have a EditText field in android. The password should contain minimum 4 characters and maximum 20 characters without spaces at the start or in the middle. Example blankspaceRaghu and RaghublankspaceRaghu should not be alllowed.</p>
  
  <pre><code>Pass= password.getText().toString();    
  
  Pattern p= Pattern.compile("[^\\S]+[a-z,A-Z]+");
  
  Matcher m = p.matcher(Pass);
  </code></pre>