What is servlet exception?

ServletException is a subclass of the Exception. It defines a general exception a servlet can throw when it encounters difficulty. ServletException class define only one method getRootCause() that returns the exception that caused this servlet exception. It inherit the other methods like fillInStackTrace, getLocalizedMessage, getMessage, printStackTrace, printStackTrace, printStackTrace, toString etc from the Throwable class. Packages that use ServletException : * javax.servlet * javax.servlet.http