JOptionPane StackOverflow Error

[mrsaraira]

I've encountered a StackOverflow error when showing a JOptionPane by passing a String to the message parameter of javax.swing.JOptionPane#showConfirmDialog(java.awt.Component, java.lang.Object, java.lang.String, int, int), which should wrap the message in a JLabel component internally.

Unfortunately, I don't have a snippet to help reproduce it; I have the stack trace.

P.S. I've managed to workaround the issue by passing JLabel to message parameter rather than passing a String.

Stack trace:

[AWT-EventQueue-0] ERROR my.app.Application - Uncaught exception occurred java.lang.StackOverflowError: null	
at java.base/java.lang.AbstractStringBuilder.ensureCapacityInternal(AbstractStringBuilder.java:243)	
at java.base/java.lang.AbstractStringBuilder.append(AbstractStringBuilder.java:686)	
at java.base/java.lang.StringBuffer.append(StringBuffer.java:393)	
at java.base/java.io.StringWriter.write(StringWriter.java:122)	
at java.base/java.io.PrintWriter.implWrite(PrintWriter.java:621)	
at java.base/java.io.PrintWriter.write(PrintWriter.java:613)	
at java.base/java.io.PrintWriter.write(PrintWriter.java:635)	
at java.base/java.io.PrintWriter.print(PrintWriter.java:782)	
at java.base/java.io.PrintWriter.println(PrintWriter.java:1033)	
at java.base/java.lang.Throwable$WrappedPrintWriter.println(Throwable.java:801)	
at java.base/java.lang.Throwable.lockedPrintStackTrace(Throwable.java:684)	
at java.base/java.lang.Throwable.printStackTrace(Throwable.java:673)	
at java.base/java.lang.Throwable.printStackTrace(Throwable.java:749)	
at java.desktop/javax.swing.UIDefaults.getUI(UIDefaults.java:816)	
at java.desktop/javax.swing.UIManager.getUI(UIManager.java:1070)	
at java.desktop/javax.swing.JPanel.updateUI(JPanel.java:129)	
at java.desktop/javax.swing.JPanel.<init>(JPanel.java:89)	
at java.desktop/javax.swing.JPanel.<init>(JPanel.java:112)	
at java.desktop/javax.swing.JPanel.<init>(JPanel.java:120)	
at java.desktop/javax.swing.plaf.basic.BasicOptionPaneUI$1.<init>(BasicOptionPaneUI.java:486)	
at java.desktop/javax.swing.plaf.basic.BasicOptionPaneUI.addMessageComponents(BasicOptionPaneUI.java:486)	
at com.formdev.flatlaf.ui.FlatOptionPaneUI.addMessageComponents(FlatOptionPaneUI.java:220)	
at java.desktop/javax.swing.plaf.basic.BasicOptionPaneUI.addMessageComponents(BasicOptionPaneUI.java:512)	
at com.formdev.flatlaf.ui.FlatOptionPaneUI.addMessageComponents(FlatOptionPaneUI.java:220)	
at java.desktop/javax.swing.plaf.basic.BasicOptionPaneUI.addMessageComponents(BasicOptionPaneUI.java:512)	
at com.formdev.flatlaf.ui.FlatOptionPaneUI.addMessageComponents(FlatOptionPaneUI.java:220)	
at java.desktop/javax.swing.plaf.basic.BasicOptionPaneUI.addMessageComponents(BasicOptionPaneUI.java:512)
// recursive calls to the last two frames...

Java: 22.0.1 Oracle Corporation
OS: macOS 15.3 (24D60)

[DevCharly]

Hmm, works fine for me 😕

Probably it has something to do with the message string content.
Could you provide that string?
If you don't want to post it here, please send it to [email protected]

[mrsaraira]

It's a really strange case because the strings are nothing special ex. "Exit Application".
I'll happily contribute the fix if I figure it out when this happens again.
This isn't a common issue for sure.

[DevCharly]

I think it has something to do with (larger?) multi-line message strings (that contain \n).

BasicOptionPaneUI.addMessageComponents() splits multi-line message and invokes itself with substrings...
But normally this does not result in stack overflow...