[NETBEANS-4405] AssertionError thrown when compiling WebSocket project

• Type: Bug
• Status: Open
• Priority: Minor
• Resolution: Unresolved
• Affects Version/s: 11.3
• Component/s: java - Compiler

Environment

NetBeans 11.3
Tomcat 9.0.34
JDK 14
Windows 10

• Assignee: Unassigned
• Reporter: Bart Berger
• Created: 03/Jun/20 17:11
• Updated: 03/Jun/20 17:11

Description

This is a WebSocket based web application.  NetBeans throws an AssertionError when this project is opened or after making a change to the server-side Java files; i.e., when the project is compiled.  Repeatable, not intermittent. However, the project still runs.  So not a real impediment, but I didn't find this issue in the bug list so I thought you might like to know. 

(I have to do a Clean and Build Project after every change to a server-side Java file before Run will work.  Don't know if that's related or a separate issue.  The Clean and Build throws the same AssertionError but seems to work.)

The stack trace implies the issue is related to annotations.  The only annotations in the source code are the WebSocket annotations (@ServerEndpoint, @OnOpen, etc.).