#69 2.1.0 Mac ExceptionInInitializerError; hanging splash screen

[René Capella]

This is affected several individuals in our Java class who are instructed to use this software. We all mac Macs are updated.

I did download an update this morning and the exception is the same as before. The symptoms are a hanging splash screen.

Here is the stack trace when I run java -jar violetumleditor-2.1.0.jar from the command-line

Exception in thread "main" java.lang.ExceptionInInitializerError
    at com.thoughtworks.xstream.XStream.setupConverters(XStream.java:678)
    at com.thoughtworks.xstream.XStream.<init>(XStream.java:456)
    at com.thoughtworks.xstream.XStream.<init>(XStream.java:381)
    at com.thoughtworks.xstream.XStream.<init>(XStream.java:356)
    at com.horstmann.violet.framework.file.persistence.XStreamBasedPersistenceService.read(XStreamBasedPersistenceService.java:39)
    at com.horstmann.violet.framework.file.persistence.XHTMLPersistenceService.read(XHTMLPersistenceService.java:89)
    at com.horstmann.violet.application.menu.FileMenu.getSampleDiagramImage(FileMenu.java:601)
    at com.horstmann.violet.application.menu.FileMenu.initFileNewMenu(FileMenu.java:506)
    at com.horstmann.violet.application.menu.FileMenu.createMenu(FileMenu.java:121)
    at com.horstmann.violet.application.menu.FileMenu.<init>(FileMenu.java:96)
    at com.horstmann.violet.application.menu.MenuFactory.getFileMenu(MenuFactory.java:58)
    at com.horstmann.violet.application.gui.MainFrame.createMenuBar(MainFrame.java:121)
    at com.horstmann.violet.application.gui.MainFrame.<init>(MainFrame.java:88)
    at com.horstmann.violet.UMLEditorApplication.createDefaultWorkspace(UMLEditorApplication.java:153)
    at com.horstmann.violet.UMLEditorApplication.<init>(UMLEditorApplication.java:108)
    at com.horstmann.violet.UMLEditorApplication.main(UMLEditorApplication.java:96)
Caused by: java.lang.reflect.InaccessibleObjectException: Unable to make field private final java.util.Comparator java.util.TreeMap.comparator accessible: module java.base does not "opens java.util" to unnamed module @1a27aae3
    at java.base/java.lang.reflect.AccessibleObject.checkCanSetAccessible(AccessibleObject.java:354)
    at java.base/java.lang.reflect.AccessibleObject.checkCanSetAccessible(AccessibleObject.java:297)
    at java.base/java.lang.reflect.Field.checkCanSetAccessible(Field.java:178)
    at java.base/java.lang.reflect.Field.setAccessible(Field.java:172)
    at com.thoughtworks.xstream.converters.collections.TreeMapConverter.<clinit>(TreeMapConverter.java:59)
    ... 16 more

[René Capella]

*are all mac users with updated machines

[René Capella]

using open jdk 17

[James Pittard]

I am having no issue on startup with openjdk version "1.8.0_362" on Sonoma 14.2. Started with

java -jar violetumleditor-2.1.0.jar