getting line numbers into stack traces

[Mike Curwen]

As soon as the stack trace hits my code, the line numbers disappear. Is there a compiler switch to use?

java.lang.NullPointerExceptionjava.lang.NullPointerException
at com.Ostermiller.util.CSVPrinter.print(Unknown Source)
at com.Ostermiller.util.CSVPrinter.println(Unknown Source)
at com.gbim.data.Utils.getList(Unknown Source)
at com.gbim.idm.reports.UnSubscriptions.doReport(Unknown Source)
at com.gbim.idm.serReports.handleRequest(Unknown Source)
at org.apache.velocity.servlet.VelocityServlet.doRequest(VelocityServlet.java:372)
at org.apache.velocity.servlet.VelocityServlet.doPost(VelocityServlet.java:342)
at javax.servlet.http.HttpServlet.service(HttpServlet.java:760)
at javax.servlet.http.HttpServlet.service(HttpServlet.java:853)
at org.apache.catalina.core.ApplicationFilterChain.internalDoFilter(ApplicationFilterChain.java:247)
at org.apache.catalina.core.ApplicationFilterChain.doFilter(ApplicationFilterChain.java:193)
.
.
.
etc, etc...

[Richard Jensen]

Usage: javac <options> <source files>
where possible options include:
  -g                        Generate all debugging info
  -g:none                   Generate no debugging info
  -g:{lines,vars,source}    Generate only some debugging info
  -O                        Optimize; may hinder debugging or enlarge class file
...
  -help                     Print a synopsis of standard options

[ June 18, 2003: Message edited by: Richard Jensen ]

[Avi Abrami]

Hi Mike,
Mr. Ostermiller apparently did not compile his code with the "-g" flag, that's why the part of the stack trace that deals with his classes, does not contain line numbers. I presume that the source code for Mr. Ostermiller's utilities is available. If so, I suggest you recompile his utilities -- from his source code -- using the "-g" flag.
Alternatively, he may have a "debug-enabled" version that he can give you.
Hope this helps.
Good Luck,
Avi.