quick q to all those using tomcat with linux:

[Luis Andrei Cobo <va...@megapathdsl.com>]

I have JSP pages that work, and I wrote a servlet to add some backgrounding to the actual functions of the page. The servlet seems to be coughing up blood with tons of nullpointer exceptions. All well and good, but sseeing as how Im sort of new to JAVA on a whole, I once saw that if you put System.err.println in your code, or System.out.println in your code, is should show up someplace fairly visibile to be able to trace the code as it runs....


where can I find this? I have numerous occurances of this in my code, for good reason I need to check the returns of values as they come through to catch where the error is happening....not a new skill for all you guys and gals im sure.


im currently running linuxppc with jdsk 2.1 and jdk 1.2.2 ( native threads even!) and tomcat seems to be having a good time of it....

I just need to get this java console thing happening. Cant seem to be able to figure out where tomcat/jserv is throwing this info, or if its being swallowed up by the great void of SWAP

Luis Andrei Cobo
Web Developer

Re: quick q to all those using tomcat with linux:

[Juan Alvarez Ferrando <ja...@oviedo.syseca.es>]

> Luis Andrei Cobo wrote:
> 
> I have JSP pages that work, and I wrote a servlet to add some
> backgrounding to the actual functions of the page. The servlet seems
> to be coughing up blood with tons of nullpointer exceptions. All well
> and good, but sseeing as how Im sort of new to JAVA on a whole, I once
> saw that if you put System.err.println in your code, or
> System.out.println in your code, is should show up someplace fairly
> visibile to be able to trace the code as it runs....
> 
> 
> where can I find this? I have numerous occurances of this in my code,
> for good reason I need to check the returns of values as they come
> through to catch where the error is happening....not a new skill for
> all you guys and gals im sure.
> 
> 
> im currently running linuxppc with jdsk 2.1 and jdk 1.2.2 ( native
> threads even!) and tomcat seems to be having a good time of it....
> 
> I just need to get this java console thing happening. Cant seem to be
> able to figure out where tomcat/jserv is throwing this info, or if its
> being swallowed up by the great void of SWAP
> 
> Luis Andrei Cobo
> Web Developer

The messages should go to the terminal window where you started Tomcat
from; so using cd $TOMCAT_HOME; ./startup.sh > log 2>&1 should leave log
file including Tomcat's startup messages and anything your code prints
to standard and error output.


Juan Alvarez Ferrando