Answers in this category:
How do I uninstall JBuilder 3.5?
How can I configure JBuilder 3.5 to run on JDK 1.3 instead of the bundled JDK 1.2.2?
How can I improve the performance of JBuilder 3.5?
I am receiving errors when I try and make a JBuilder 3.5 project when calling HttpSession object methods getAttribute() and setAttribute(). I am using JDK 1.3.1-rc2. The compiler reports the error: "Error #: 300 : method setAttribute(java.lang.string, java.lang.string) not found in interface javax.servlet.http.HttpSession at line ...." I can use the command line JDK compiler to compile this same code just fine. How do I correct this?

See also the Borland FAQ:

  http://community.borland.com/article/0,1410,21837,00.html

  http://community.borland.com/article/0,1410,22249,00.html
  http://community.borland.com/article/0,1410,22763,00.html
  http://community.borland.com/article/0,1410,22043,00.html

  http://community.borland.com/article/0,1410,22763,00.html

I was able to fix this problem. The solution was to do as you suggested in checking the required libraries. I had initially included the JSWDK 1.0 library which included the "c:/JBuilder/lib/servlet.jar" class. I was also building on the command line using the "c:/tomcat/lib/servlet.jar" class using the classpath switch.

Apparently, the tomcat version of this class is newer than the JBuilder3.5 version and the tomcat version implements the newer HttpSession specification (i.e., getAttribute(), setAttribute(), etc).

To fix the problem that I was having, I had to edit the required library JSWDK 1.0 and add the "c:/tomcat/lib/servlet.jar" class. I also moved it up so that it was listed above the "c:/JBuilder/lib/servlet.jar" class. That's all there was to it.
2001-Jun-15 8:32am gyles19@visi.com

  Are there any tools available to help diagnose classpath problems?