@ https://odetoolkit.hmc.edu/download.html
This is an elegant JAVA application that can solve simultaneous ODE equations (an opensource alternative to Polymath)
This application (under LINUX) I ran under JRE V1.8xx after disabling swing properties. If swing properties were enabled it didn't run! I approached the issue after reading https://askubuntu.com/questions/21886/how-can-i-get-a-java-apps-to-use-the-gtk-theme
At present under Windows.10 X64 I am using JRE 1.9xx ...when I try to launch via
java -jar -Xmx512m ODEToolkit.jar
it didn't run & gave following error ...Also tried but no success
java -jar -Dswing.metalTheme=metal -Xmx512m ODEToolkit.jar
Running from: ./
windows 10
Exception in thread "main" java.lang.reflect.InvocationTargetException
at java.base/jdk.internal.reflect.NativeMethodAccessorImpl.invoke0(Native Method)
at java.base/jdk.internal.reflect.NativeMethodAccessorImpl.invoke(Unknown Source)
at java.base/jdk.internal.reflect.DelegatingMethodAccessorImpl.invoke(Unknown Source)
at java.base/java.lang.reflect.Method.invoke(Unknown Source)
at org.eclipse.jdt.internal.jarinjarloader.JarRsrcLoader.main(JarRsrcLoader.java:58)
Caused by: java.lang.NoClassDefFoundError: org/jdesktop/layout/GroupLayout$Group
at ui.TabbedOutputPanel.<init>(TabbedOutputPanel.java:113)
at ui.outputpanels.GraphicsRep.<init>(GraphicsRep.java:75)
at ui.outputpanels.ODEWorkspace.<init>(ODEWorkspace.java:82)
at ui.GUI.addWorkspace(GUI.java:179)
at ui.GUI.<init>(GUI.java:111)
at launch.ODEToolkit.main(ODEToolkit.java:57)
... 5 more
Caused by: java.lang.ClassNotFoundException: org.jdesktop.layout.GroupLayout$Group
at java.base/java.net.URLClassLoader.findClass(Unknown Source)
at java.base/java.lang.ClassLoader.loadClass(Unknown Source)
at java.base/java.lang.ClassLoader.loadClass(Unknown Source)
... 11 more