I use Tomcat5.5.12,and I run my JSP and Servlet in it, after run some time,I find Tomcat window show some error,and close automatically quickly. I don't see the information clearly in the window of Tomcat.It seems "key/ " or other information in Tomcat window. I open files under directory of logs,but from these logs,I don't find the information like I see from Tomcat windows. I know it must some error in my JSP and servlet files,so that make Tomcat to close automatically. Right? I want to know how to make Tomcat window opening and don't close automatically or make the Tomcat window open longer time when error occurs,so that I can see the error information clear from Tomcat Window?

Any idea will be appreciated!
Thanks in advance

Yes I know, this post is quite old but still it appears high in search results.

To prevent Tomcat on Windows from launching in a separate window look for startup.bat in bin/.

There should be the following line somewhere at the end:
Change "start" to "run" and try again.

Hope it helps.