where is jsp's java file

In tomcat6, wher开发者_如何学Goe does tomcat put the generated java file for a JSP file?

exception:

java.lang.NullPointerException
    at org.apache.jsp.xxx.yyy.view_jsp._jspService(view_jsp.java:164)

They're kept under Tomcat's work directory, e.g.

work/Catalina/localhost/_/org/apache/jsp/login_jsp.java

The specifics of the path my vary, from version to version, but it's always under work

look in ${TOMCAT_HOME}/work/Catalina/<HOST>/....