java -jar varsha.jar
java.lang.reflect.InvocationTargetException
   at java.lang.reflect.Method.invokeNative(Native Method)
   at java.lang.reflect.Method.invoke(Method.java:372)
   at jamvm.java.lang.JarLauncher.main(JarLauncher.java:49)
Caused by: java.lang.NullPointerException
   at common.ui.HostFileSystemView.<init>(HostFileSystemView.java:36)
   at varsha.ui.Varsha.getHostFileSystemView(Varsha.java:1216)
   at varsha.ui.Varsha.addTabsToTabbedPane(Varsha.java:1201)
   at varsha.ui.Varsha.initUI(Varsha.java:1179)
   at varsha.ui.Varsha.<init>(Varsha.java:33)
   at varsha.ui.Varsha.main(Varsha.java:1243)
   at java.lang.reflect.Method.invokeNative(Native Method)
   ...2 more