I'll try to take a look at it. I had heard reports that there were 
compatibility issues between older and newer javadoc plug in apis; there may be 
other differences.


--
Joe (new phone, no quip yet)
________________________________
From: Gary D. Gregory <ggreg...@apache.org>
Sent: Friday, August 29, 2025 4:30:07 PM
To: users@maven.apache.org <users@maven.apache.org>
Subject: Javadoc plugin

Hi All,

A MalformedInputException started happening today when we updated our parent 
pom in Command Lang which includes updating the Javadoc plugin from 3.11.2 to 
3.11.3. Do you think this failure is related to 
https://stackoverflow.com/questions/53449049/maven-javadoc-plugin-error-javadoc-error-cannot-read-input-length-1-with-no
 and 
https://github.com/apache/maven-javadoc-plugin/blob/3dcf135299950db9541f7da671bec1a84c5cef49/src/main/java/org/apache/maven/plugins/javadoc/AbstractJavadocMojo.java#L4373?

<...>
Caused by: java.nio.charset.MalformedInputException: Input length = 1
    at java.nio.charset.CoderResult.throwException (CoderResult.java:281)
    at sun.nio.cs.StreamDecoder.implRead (StreamDecoder.java:339)
    at sun.nio.cs.StreamDecoder.read (StreamDecoder.java:178)
    at java.io.InputStreamReader.read (InputStreamReader.java:184)
    at java.io.BufferedReader.fill (BufferedReader.java:161)
    at java.io.BufferedReader.readLine (BufferedReader.java:324)
    at java.io.BufferedReader.readLine (BufferedReader.java:389)
    at java.io.BufferedReader$1.hasNext (BufferedReader.java:571)
    at java.util.Iterator.forEachRemaining (Iterator.java:115)
    at java.util.Spliterators$IteratorSpliterator.forEachRemaining 
(Spliterators.java:1801)
    at java.util.stream.AbstractPipeline.copyInto (AbstractPipeline.java:482)
    at java.util.stream.AbstractPipeline.wrapAndCopyInto 
(AbstractPipeline.java:472)
    at java.util.stream.ReduceOps$ReduceOp.evaluateSequential 
(ReduceOps.java:708)
    at java.util.stream.AbstractPipeline.evaluate (AbstractPipeline.java:234)
    at java.util.stream.ReferencePipeline.collect (ReferencePipeline.java:566)
    at org.apache.maven.plugins.javadoc.AbstractJavadocMojo.isUpToDate 
(AbstractJavadocMojo.java:5010)

From:

https://github.com/apache/commons-lang/actions/runs/17325932362/job/49213011492

The output for the above is copied to 
https://gist.github.com/garydgregory/1652fd57c1481b6090c48a8229e8cc65

TY,
Gary

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