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JDK java.lang.IllegalArgumentException: Illegal pattern character 'u'

0 votes

Since version 8037

rendering with a syntax error does not return a nice error image, but fails on 


java.lang.IllegalArgumentException: Illegal pattern character 'u'
at java.text.SimpleDateFormat.compile(SimpleDateFormat.java:768)
at java.text.SimpleDateFormat.initialize(SimpleDateFormat.java:575)
at java.text.SimpleDateFormat.<init>(SimpleDateFormat.java:500)
at java.text.SimpleDateFormat.<init>(SimpleDateFormat.java:475)
at net.sourceforge.plantuml.graphic.DateEventUtils.addEvent(DateEventUtils.java:60)
at net.sourceforge.plantuml.graphic.GraphicStrings.getTextBlock(GraphicStrings.java:130)
at net.sourceforge.plantuml.graphic.GraphicStrings.calculateDimension(GraphicStrings.java:152)
at net.sourceforge.plantuml.graphic.GraphicStrings.drawU(GraphicStrings.java:135)
at net.sourceforge.plantuml.ugraphic.ImageBuilder.getFinalDimension(ImageBuilder.java:159)
at net.sourceforge.plantuml.ugraphic.ImageBuilder.writeImageInternal(ImageBuilder.java:128)
at net.sourceforge.plantuml.ugraphic.ImageBuilder.writeImageTOBEMOVED(ImageBuilder.java:123)
at net.sourceforge.plantuml.PSystemError.exportDiagram(PSystemError.java:118)
at net.sourceforge.plantuml.SourceStringReader.generateImage(SourceStringReader.java:113)
    SourceStringReader reader = new SourceStringReader("@startuml\n" +
    "xxx\n" +
    ByteArrayOutputStream os = new ByteArrayOutputStream();
    reader.generateImage(os, 0, new FileFormatOption(FileFormat.PNG));


JDK 1.7+ works fine, JDK fails

asked May 20, 2016 in bug by Meo (910 points)

1 Answer

0 votes
Best answer
Thanks for the feedback.

It's an issue with the Locale.

This has been fixed in last beta https://dl.dropboxusercontent.com/u/13064071/plantuml.jar

Tell us if it's working for you.

answered May 21, 2016 by plantuml (113,980 points)
selected Jun 8, 2016 by Meo
It does not, new SimpleDateFormat("MM-dd-u", Locale.US) does not work for me - Illegal pattern character 'u'
Could you try : new SimpleDateFormat("MM-dd-u", Locale.ENGLISH)
same, I looked into docs, and 'u' is not in the table in JDK 1.6...
Ok, let's not use this 'u' anymore.
You'll find a new corrected beta here https://dl.dropboxusercontent.com/u/13064071/plantuml.jar
If you need the patched class, it's here

Tell us if it's still not working for you!
that works fine, thanks!
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