I'm new to all this stuff, and I'm starting a flex+blazeds project. First I coded some server classes, and modified xmls (in WEB-INF). Now I want to test it with client. There (in Flash Builder) it's needed to specify path to folder where server lives. The problem is that I cannot find it. In the same time http://localhost:8400/MyAppServer/ is found in browser. What am I not understanding?
Thank you in advance!
Without more information on the configuration, I don't think anyone can help you.
If you are using BlazeDS Turnkey, there are examples there in both Java and Flex you can check.
If not, I really encourage you do start with Turnkey before trying to build your own BlazeDS application from scratch:
Go here and click on Turnkey, it has everything you need to start easily. https://www.adobe.com/cfusion/entitlement/index.cfm?e=lc_blazeds
Hope that helps, Cheers