title: java.lang.ClassNotFoundException: org.eclipse.core.runtime.adaptor.EclipseStarter
body: <p>When i am starting my eclipse i am getting this exception.How could i resolve this.</p>
  
  <pre><code>!SESSION Thu Aug 05 12:52:23 IST 2010 ------------------------------------------
  !ENTRY org.eclipse.equinox.launcher 4 0 2010-08-05 12:52:23.805
  !MESSAGE Exception launching the Eclipse Platform:
  !STACK
  java.lang.ClassNotFoundException: org.eclipse.core.runtime.adaptor.EclipseStarter
      at java.net.URLClassLoader$1.run(URLClassLoader.java:200)
      at java.security.AccessController.doPrivileged(Native Method)
      at java.net.URLClassLoader.findClass(URLClassLoader.java:188)
      at java.lang.ClassLoader.loadClass(ClassLoader.java:307)
      at java.lang.ClassLoader.loadClass(ClassLoader.java:252)
      at org.eclipse.equinox.launcher.Main.invokeFramework(Main.java:556)
      at org.eclipse.equinox.launcher.Main.basicRun(Main.java:514)
      at org.eclipse.equinox.launcher.Main.run(Main.java:1311)
      at org.eclipse.equinox.launcher.Main.main(Main.java:1287)
  </code></pre>
  
  <p>I cleared my workspace also but still i am getting same problem.</p>
  
  <p>I add one plugin name called tomcatPluginV321.zip.I extracted this in plugin folder.</p>
  
  <p>then i am facing this problem.</p>