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  1.  Home
  2. JAVA400-L
  3. September 2005

Switching to Java on OS/400 - got a few questions.

I am an experienced Javaprogrammer with Windows+Unix experience who have now for a while worked with creating frontends for OS/400 backbone calls using Eclipse on Win32.
Just for fun I tried installing and running Tomcat 5.0.30 beta the other day, with the intent of eventually porting our webapps to run natively on OS/400, but we are very careful since that is very new to us all. The sample JSP's and servlets was impressively quick!
I would therefore like to hear if there is experience in this forum regarding the following:
* The long startup time of Tomcat (50 seconds) is due to some precompilation to native code? * Can I use graphical applications (Swing) on OS/400 and use some software on Win32/Unix to see the output. X Windows perhaps?
* I have seen that some corners of eclipse.org mention OS/400 binaries, but not for the native Eclipse application. Is this available, or is it perhaps some Websphere package? How do I access that (i.e. what am I to ask the system responsible) :) Would Netbeans run?
* Do anyone use Java on OS/400 as a development platform, or is it solely for deploying applications?
* I found the qsh interface rather sluggish to work with. Can I ssh to OS/400 instead and perhaps get a more responsive shell?
* What is the resource usage of Java programs under OS/400? How can I tell for myself? It is very important that we can determine accurately if this is a feasible path.
* Do anyone have performance numbers of JDBC-access using the best driver when running on OS/400? We may have a very data processing intensive application where network performance may be a bottleneck if running on another host. 



Any other suggestions, including further reading, would be appreciated.

Thanks in advance for any pointers.

Best regards,

   Thorbjørn Ravn Andersen

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