How to fix -Djava.endorsed.dirs not supported, tha

Question

I used tomcat for projects before, but this problem came after installing the WTP, and occurs when I try to run the application on server.

First comes a message, could not create Java Virtual Machine, then in the console occures this one:

-Djava.endorsed.dirs=C:\Program Files\Apache Software Foundation\Tomcat 9.0\endorsed is not supported. Endorsed standards and standalone APIs
in modular form will be supported via the concept of upgradeable modules.

Answer 1

To fix this bug, you need to install/update the Eclipse Web Tools Platform (WTP) to version 3.9.4 or later.

• Select "Help > Install new Software..."
• Select or add following URL: http://download.eclipse.org/webtools/repository/oxygen
• Check Web Tools Platform (WTP) 3.9.4
• Select "Next" and follow instructions

(Bug was reported to Eclipse here: https://bugs.eclipse.org/bugs/show_bug.cgi?id=533162)

Answer 2

Eclipse Oxygen.1a and newer releases contain changes to launch Tomcat properly with Java 9. You need to update your IDE.