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[ BUILD # : 200810240201 ] [ JDK VERSION : other ] Under Web Application Project properties, we can add Web Frameworks, as soon in the attached screenshot. But we cannot remove any added framework from the Project from the same screen. There should be an option to remove Web Frameworks from a project and show what files are added as part of that framework, which will be deleted or removed, if the framework is removed.
Created attachment 72700 [details] screenshot
A workaround is to have your project saved into a local/remote Subversion directory. Then make a commit before you add the framework. If you are trying something out and don't like the framework, do a revert modifications. Then your project will be in the proper state. I haven't tried this with CVS, but I assume that it works there too.
This old bug may not be relevant anymore. If you can still reproduce it in 8.2 development builds please reopen this issue. Thanks for your cooperation, NetBeans IDE 8.2 Release Boss