[Bug 3720] New: System jars (jars of the jre itself) are not recognized as such under windows

[bugzilla-daemon at icedtea.classpath.org]

https://icedtea.classpath.org/bugzilla/show_bug.cgi?id=3720

            Bug ID: 3720
           Summary: System jars (jars of the jre itself) are not
                    recognized as such under windows
           Product: IcedTea-Web
           Version: hg
          Hardware: x86_64
                OS: Windows
            Status: NEW
          Severity: critical
          Priority: P5
         Component: NetX (javaws)
          Assignee: jvanek at redhat.com
          Reporter: lhersch at dssgmbh.de
                CC: unassigned at icedtea.classpath.org

Created attachment 1731
  --> https://icedtea.classpath.org/bugzilla/attachment.cgi?id=1731&action=edit
described patch

In that they are not recognized as such, it then attempts to acquire
permissions based on the system policies, which then fails and leads to an
exception.
I think if the jre directory contains blank characters, the problem also
appears under linux.
The problem arises from comparing a URL with a platform-specific string.

Under linux e.g. made the following comparison that works.

"/usr/lib/jvm/java-8-openjdk-amd64/jre/lib/ext/sunjce_provider.jar".startsWith("/usr/lib/jvm/java-8-openjdk-amd64/jre/lib/ext");

Under windows e.g. made the following comparison that does not work.

"/C:/Program%20Files/Java/jre1.8.0_201/lib/ext/sunjce_provider.jar".startsWith("C:\Program
Files\Java\jre1.8.0_201\lib\ext");

Enclosed a patch that fixes the problem.

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