title: Check LDAP connection (Java)
body: <p>I'm using javax naming to connect to an LDAP database.
  Is there a good way to check if a connection is still valid?
  I'm looking for something really efficient here because it may need to be done often.</p>
  
  <p>After some web searching all I have found is a suggestion to do a quick search, is there any more lightweight way?</p>
  
  <p>/mac</p>