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https://issues.apache.org/jira/browse/SLING-2699?page=com.atlassian.jira.plugin.system.issuetabpanels:comment-tabpanel&focusedCommentId=13533073#comment-13533073
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Felix Meschberger commented on SLING-2699:
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Looking at the code, the # flag as no effect in string arguments -- in fact
this only may have an effect for arguments implementing the Formattable
interface (which String doesn't).
In Java 6 there is no effect, while in Java 7 (and current Java 8 builds),
using # with an argument not implementing the Formattable interface throws an
exception. Looks like this is implied by the description "Depends on the
definition of Formattable." in the Formatter JavaDoc.
> FormatFlagsConversionMismatchException in RequestHistoryConsolePlugin with
> Java 7
> ----------------------------------------------------------------------------------
>
> Key: SLING-2699
> URL: https://issues.apache.org/jira/browse/SLING-2699
> Project: Sling
> Issue Type: Bug
> Components: Engine
> Affects Versions: Engine 2.2.6
> Environment: java version "1.7.0_07"
> Java(TM) SE Runtime Environment (build 1.7.0_07-b11)
> Java HotSpot(TM) 64-Bit Server VM (build 23.3-b01, mixed mode)
> Reporter: Bertrand Delacretaz
> Priority: Minor
>
> I haven't tried it myself but a colleague reports getting the below stack
> trace with Java7:
> 0.10.2012 04:40:09.447 INFO [0:0:0:0:0:0:0:1 [1349869209447] GET
> /system/console/requests HTTP/1.1] servletengine Servlet threw exception:
> java.util.FormatFlagsConversionMismatchException: Conversion = s, Flags = #
> at java.util.Formatter$FormatSpecifier.failMismatch(Unknown Source)
> at java.util.Formatter$FormatSpecifier.printString(Unknown Source)
> at java.util.Formatter$FormatSpecifier.print(Unknown Source)
> at java.util.Formatter.format(Unknown Source)
> at java.util.Formatter.format(Unknown Source)
> at java.lang.String.format(Unknown Source)
> at
> org.apache.sling.engine.impl.request.RequestHistoryConsolePlugin$Plugin.getLinksTable(RequestHistoryConsolePlugin.java:168)
> at
> org.apache.sling.engine.impl.request.RequestHistoryConsolePlugin$Plugin.doGet(RequestHistoryConsolePlugin.java:239)
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