Java issue with matlab R2021a using fieldtrip-20210507

I have started to get red -long- java exceptions such as theses :

Exception in thread "AWT-EventQueue-0": javax.swing.text.StateInvariantError: Can't render line: 5252
	at javax.swing.text.PlainView.drawLine(PlainView.java:92)
	at com.mathworks.mde.cmdwin.CmdWinSyntaxUI$SyntaxPlainView.drawLine(CmdWinSyntaxUI.java:539)
	at javax.swing.text.PlainView.paint(PlainView.java:311)
	at com.mathworks.mde.cmdwin.CmdWinSyntaxUI$SyntaxPlainView.paint(CmdWinSyntaxUI.java:325)
	at javax.swing.plaf.basic.BasicTextUI$RootView.paint(BasicTextUI.java:1434)
	at javax.swing.plaf.basic.BasicTextUI.paintSafely(BasicTextUI.java:737)
	at javax.swing.plaf.basic.BasicTextUI.paint(BasicTextUI.java:881)
	at javax.swing.plaf.basic.BasicTextUI.update(BasicTextUI.java:860)
	at javax.swing.JComponent.paintComponent(JComponent.java:780)
	at javax.swing.JComponent.paint(JComponent.java:1056)
	at javax.swing.JComponent.paintChildren(JComponent.java:889)
	at javax.swing.JComponent.paint(JComponent.java:1065)
	at javax.swing.JViewport.paint(JViewport.java:728)
	at javax.swing.JComponent.paintChildren(JComponent.java:889)
	at javax.swing.JComponent.paint(JComponent.java:1065)
	at javax.swing.JComponent.paintToOffscreen(JComponent.java:5210)
	at javax.swing.RepaintManager$PaintManager.paintDoubleBuffered(RepaintManager.java:1579)
	at javax.swing.RepaintManager$PaintManager.paint(RepaintManager.java:1502)
	at javax.swing.RepaintManager.paint(RepaintManager.java:1272)
	at javax.swing.JComponent._paintImmediately(JComponent.java:5158)
	at javax.swing.JComponent.paintImmediately(JComponent.java:4969)
	at javax.swing.RepaintManager$4.run(RepaintManager.java:831)
	at javax.swing.RepaintManager$4.run(RepaintManager.java:814)
	at java.security.AccessController.doPrivileged(Native Method)
	at java.security.ProtectionDomain$JavaSecurityAccessImpl.doIntersectionPrivilege(ProtectionDomain.java:74)
	at javax.swing.RepaintManager.paintDirtyRegions(RepaintManager.java:814)
	at javax.swing.RepaintManager.paintDirtyRegions(RepaintManager.java:789)
	at javax.swing.RepaintManager.prePaintDirtyRegions(RepaintManager.java:738)
	at javax.swing.RepaintManager.access$1200(RepaintManager.java:64)
	at javax.swing.RepaintManager$ProcessingRunnable.run(RepaintManager.java:1732)
	at java.awt.event.InvocationEvent.dispatch(InvocationEvent.java:311)
	at java.awt.EventQueue.dispatchEventImpl(EventQueue.java:758)
	at java.awt.EventQueue.access$500(EventQueue.java:97)
	at java.awt.EventQueue$3.run(EventQueue.java:709)
	at java.awt.EventQueue$3.run(EventQueue.java:703)
	at java.security.AccessController.doPrivileged(Native Method)
	at java.security.ProtectionDomain$JavaSecurityAccessImpl.doIntersectionPrivilege(ProtectionDomain.java:74)
	at java.awt.EventQueue.dispatchEvent(EventQueue.java:728)
	at java.awt.EventDispatchThread.pumpOneEventForFilters(EventDispatchThread.java:205)
	at java.awt.EventDispatchThread.pumpEventsForFilter(EventDispatchThread.java:116)
	at java.awt.EventDispatchThread.pumpEventsForHierarchy(EventDispatchThread.java:105)
	at java.awt.EventDispatchThread.pumpEvents(EventDispatchThread.java:101)
	at java.awt.EventDispatchThread.pumpEvents(EventDispatchThread.java:93)
	at java.awt.EventDispatchThread.run(EventDispatchThread.java:82)
    

I am getting multiple instances of this exception (for different number of lines) and it slows down the whole computation process. Matlab does not answer to my clicks when processing these exceptions.

I'm on windows 10, version 21H2 and I'm using fieldtrip functions to preprocess EEG signals and compute ffts.

I don't think it is an issue with the actual lines of code, but with the rendering of the matlab windows, because at one time I was able to stop these exceptions by docking the maltab windows together.

I don't get these warnings when I open matlab, and I can't clear the command windows of them.

I have seen people with this kind of issues, but reseting the paths did not work for me. I verified that the version of java I'm using in matlab is the right one. I have only one instance of matlab, the latest one, on my computer.

Has anyone have found solutions for these kind of issues ?

Answer 1

[ZH SU]

A similar question: https://in.mathworks.com/matlabcentral/answers/444569-java-errors-in-matlab-2018b-on-windows-10#answer_1264478