jdsmithsos opened a new issue, #8395: URL: https://github.com/apache/netbeans/issues/8395
### Apache NetBeans version Apache NetBeans 25 ### What happened Using Java 21. When upgrading the NetBeans version from RELEASE240 to RELEASE250. The application project build completed successfully with no compile errors. When running the successfully rebuilt project, get the following exception: java.lang.UnsupportedOperationException: The Security Manager is deprecated and will be removed in a future release at java.base/java.lang.System.setSecurityManager(System.java:430) at org.netbeans.TopSecurityManager.install(TopSecurityManager.java:525) at org.netbeans.core.NbLifecycleManager.advancePolicy(NbLifecycleManager.java:69) at org.netbeans.core.GuiRunLevel.run(GuiRunLevel.java:84) at org.netbeans.core.startup.Main.start(Main.java:316) at org.netbeans.core.startup.TopThreadGroup.run(TopThreadGroup.java:98) at java.base/java.lang.Thread.run(Thread.java:1583) I am using the NetBeans IDE version 25, which is also running on Java 21. The IDE works perfectly without startup error. ### Language / Project Type / NetBeans Component Java Maven application ### How to reproduce In the project Maven pom.xml change the netbeans.version to RELEASE250, rebuild, and run ### Did this work correctly in an earlier version? Apache NetBeans 24 ### Operating System Windows 11 ### JDK 21 ### Apache NetBeans packaging Apache NetBeans platform ### Anything else _No response_ ### Are you willing to submit a pull request? No -- This is an automated message from the Apache Git Service. To respond to the message, please log on to GitHub and use the URL above to go to the specific comment. To unsubscribe, e-mail: notifications-unsubscr...@netbeans.apache.org.apache.org For queries about this service, please contact Infrastructure at: us...@infra.apache.org --------------------------------------------------------------------- To unsubscribe, e-mail: notifications-unsubscr...@netbeans.apache.org For additional commands, e-mail: notifications-h...@netbeans.apache.org For further information about the NetBeans mailing lists, visit: https://cwiki.apache.org/confluence/display/NETBEANS/Mailing+lists