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Date: Mon, 7 Dec 2015 14:01:10 +0000 (UTC)
From: "Uwe Schindler (JIRA)" <jira@apache.org>
To: dev@pdfbox.apache.org
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Subject: [jira] [Commented] (PDFBOX-3155)
 org.apache.pdfbox.util.PDFTextStripper class initialization throws
 NumberFormatException with recent Verona-enabled Java 9 JVMs
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    [ https://issues.apache.org/jira/browse/PDFBOX-3155?page=com.atlassian.jira.plugin.system.issuetabpanels:comment-tabpanel&focusedCommentId=15044986#comment-15044986 ] 

Uwe Schindler commented on PDFBOX-3155:
---------------------------------------

The stack trace we have seen:
{noformat}
Caused by: java.lang.NumberFormatException: For input string: "9-ea"
	at java.lang.NumberFormatException.forInputString(NumberFormatException.java:65)
	at java.lang.Integer.parseInt(Integer.java:675)
	at java.lang.Integer.parseInt(Integer.java:793)
	at org.apache.pdfbox.util.PDFTextStripper.<clinit>(PDFTextStripper.java:122)
	... 57 more
{noformat}

If the "-ea" would not be part of the string (e.g. final release of Java 9), it would fail with ArrayIndexOutOfBoundsException in the following line.

See http://openjdk.java.net/jeps/223 for new version number formats, so be prepared and don't fail code with exceptions caused by missing consistency checks.

> org.apache.pdfbox.util.PDFTextStripper class initialization throws NumberFormatException with recent Verona-enabled Java 9 JVMs
> -------------------------------------------------------------------------------------------------------------------------------
>
>                 Key: PDFBOX-3155
>                 URL: https://issues.apache.org/jira/browse/PDFBOX-3155
>             Project: PDFBox
>          Issue Type: Bug
>    Affects Versions: 1.8.8, 1.8.10
>            Reporter: Uwe Schindler
>            Priority: Critical
>
> Lucene/Solr runs its whole testsuite also with Java 9 EA releases to trigger bugs early. In our tests (Solr + TIKA) we found out that org.apache.pdfbox.util.PDFTextStripper throws a NumberFormatException in its static initializer when parsing the "java.version" system property. The reason for failure is a change in Java 9, where version numbers got a new format.
> There are 2 problems:
> - It should not assume that all components are really a number. So it should try/catch NumberFormatException and assign some "unknown" version
> - The code should really use "java.specification.version". This is standardized and only contains digits.
> - The code should also be prepared to handle version numbers without minor version! E.g. Java 9 only has "9" instead of "1.9" as its main version number.
> For the use case I would nuke this check and find a better workaround.
> Relying on String parsing for non-standardized system properties in a static class initializer is the reason why this bug is raised to level "Critical".



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