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https://issues.apache.org/jira/browse/UIMA-5905?page=com.atlassian.jira.plugin.system.issuetabpanels:all-tabpanel
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Marshall Schor resolved UIMA-5905.
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Resolution: Fixed
> uv2 work around Java 11 build issue with ByteBuffer return type change
> ----------------------------------------------------------------------
>
> Key: UIMA-5905
> URL: https://issues.apache.org/jira/browse/UIMA-5905
> Project: UIMA
> Issue Type: Bug
> Components: Core Java Framework
> Affects Versions: 2.10.3SDK
> Reporter: Marshall Schor
> Assignee: Marshall Schor
> Priority: Minor
>
> This is the UIMA Version 2 version of UIMA-5904 as a separate issue so they
> can be resolved separately.
> See https://github.com/apache/felix/pull/114 .
> Java 9 introduces overridden methods with covariant return types for the
> following methods in java.nio.ByteBuffer:
> position(int newPosition)
> limit(int newLimit)
> flip()
> clear()
> mark()
> reset()
> rewind()
> In Java 9 they all now return ByteBuffer, whereas the methods they override
> return Buffer,
> resulting in exceptions like this when executing on Java 8 and lower:
> java.lang.NoSuchMethodError: java.nio.ByteBuffer.limit(I)Ljava/nio/ByteBuffer
> This is because the generated byte code includes the static return type of
> the method, which is not found on Java 8 and lower because the overloaded
> methods with covariant return types don't exist (the issue appears even with
> source and target 8 or lower in compilation parameters).
> The solution is to cast ByteBuffer instances to Buffer before calling the
> method.
> The only use of these in UIMA is in DataIO class, and only the position(xxx)
> and limit(xxx) are used.
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