title: tomcat not running eclipse application
body: <p>I was using eclipse and tomcat 7.0 fine for all web application till yesterday but unfortunately i lost my eclipse folder(which is i am running exe) and temp folder(which is workspace directory) so i tried to add new project in new workspace(home/xx/newtemp) and tried to run by tomcat 7.0 but i am getting "<strong>Could not clean server of obsolete files: null
  java.lang.NullPointerException</strong>".Here i show my issue by images,</p>
  
  <p><img src="https://i.stack.imgur.com/OQ16A.png" alt="enter image description here"></p>
  
  <p>Even i tried,</p>
  
  <pre><code>1 stop server
  
  2 project -&gt; clean
  
  3 project build (I had automatic build disabled)
  
  4 delete server
  
  5 delete Servers folder
  
  6 restart Eclipse
  </code></pre>
  
  <p>and also,</p>
  
  <pre><code>Click on Servers tab and Stop the server in use if it's running
  Right click on the server again and select Clean...
  Right click again and select Clean Tomcat Work Directory...
  </code></pre>
  
  <p>when i do Clean Tomcat Work Directory, getting error like below image,</p>
  
  <p>and also <strong>servers switch location in tomcat 7.0 only.</strong></p>
  
  <p><img src="https://i.stack.imgur.com/bX2gl.png" alt="enter image description here"></p>
  
  <p>How to fix this?</p>