Error on startup. MATLAB will not run any scripts anymore

I receive this error in the command window in MATLAB

    Exception in thread "Startup Class Loader" java.lang.NoClassDefFoundError: com/jogamp/common/os/Platform
  at com.jogamp.opengl.GLProfile.<clinit>(GLProfile.java:146)
  at com.mathworks.hg.peer.JavaSceneServerPeer.initializeJOGL(JavaSceneServerPeer.java:147)
  at com.mathworks.hg.peer.JavaSceneServerPeer.<clinit>(JavaSceneServerPeer.java:117)
  at java.lang.Class.forName0(Native Method)
  at java.lang.Class.forName(Unknown Source)
  at com.mathworks.mde.desk.StartupClassLoader.loadClass(StartupClassLoader.java:259)
  at com.mathworks.mde.desk.StartupClassLoader.access$900(StartupClassLoader.java:25)
  at com.mathworks.mde.desk.StartupClassLoader$2.run(StartupClassLoader.java:245)
  at java.lang.Thread.run(Unknown Source)
Caused by: java.lang.ClassNotFoundException: com.jogamp.common.os.Platform
  at java.net.URLClassLoader$1.run(Unknown Source)
  at java.net.URLClassLoader$1.run(Unknown Source)
  at java.security.AccessController.doPrivileged(Native Method)
  at java.net.URLClassLoader.findClass(Unknown Source)
  at java.lang.ClassLoader.loadClass(Unknown Source)
  at sun.misc.Launcher$AppClassLoader.loadClass(Unknown Source)
  at java.lang.ClassLoader.loadClass(Unknown Source)
  ... 9 more

[Jan]

Did it run before? What happened since it run the last time? Did you install something or edited in a Java file inside the Matlab path?

[Pooyan Kheirkhah]

I am getting the same error after installing Matlab R2020-b. I see that this thread is relatively old, has there been any solutions to this?

[Walter Roberson]

Try renaming your preference directory as sometimes this kind of problem is caused by corrupted preferences.

https://www.mathworks.com/help/matlab/ref/prefdir.html

Answer 1

[Karan Singh]

Refer to this thread.

Java-related error on start-up and when attempting to generate plots in Matlab - MATLAB Answers - MATLAB Central