JSP file handling

[poonam]

hi

I am using servlets in J2EE application. i am trying to write
user data into text file using FileOutputStream and PrintStream
objects but I am getting exception as :

1 javax.servlet.ServletException: Error instantiating servlet class

2 java.lang.IllegalAccessException: Class
org.apache.catalina.core.StandardWrapper can not access a member of
class appointment with modifiers ""

can anyone please debug