Karaf 3.x works with Java8. Even Karaf 2.4.x also works with Java8. However, we fixed issues with Java8 starting from Karaf 3.0.4.

I just tested 3.0.7 on Java8 without problem.

Regards
JB

On 09/28/2017 08:37 AM, Achim Nierbeck wrote:
Hi,

afair 3.0.x was never "designed" to work with Java8.
The reason might have been the ASM stuff, so I wouldn't rely on that.

If you want to use Karaf 3.0.x you'll need to stick to Java 7 I fear.

regards, Achim


2017-09-28 7:22 GMT+02:00 Jean-Baptiste Onofré <j...@nanthrax.net <mailto:j...@nanthrax.net>>:

    Hi David,

    Something is wrong on 3.0.1 (at least with Java 8): all commands throw a
    NullPointerException (even a simple bundle:list).

    After a quick look, it seems to be related to blueprint and aries proxy (and
    asm).

    I'm checking and I will fix that.

    Regards
    JB


    On 09/28/2017 12:45 AM, KARR, DAVID wrote:

        I'm unfortunately forced to use Karaf 3.0.1 for some maintenance changes
        I need to make, and I don't even regularly use karaf.

        The setup process requires entering some commands into karaf after it
        starts up.  First there's a call to "config:property-append" with
        certain parameters.  When I do this, or even just
        "config:property-append --help", it just says "Error executing command:
        java.lang.NullPointerException", with no other information.

        What might be wrong here, and what can I do to get more information?

        Assuming I get this working, is it practical to pipe a set of commands
        into karaf, so it will enter them after it presents the command prompt?


-- Jean-Baptiste Onofré
    jbono...@apache.org <mailto:jbono...@apache.org>
    http://blog.nanthrax.net
    Talend - http://www.talend.com




--

Apache Member
Apache Karaf <http://karaf.apache.org/> Committer & PMC
OPS4J Pax Web <http://wiki.ops4j.org/display/paxweb/Pax+Web/> Committer & Project Lead
blog <http://notizblog.nierbeck.de/>
Co-Author of Apache Karaf Cookbook <http://bit.ly/1ps9rkS>

Software Architect / Project Manager / Scrum Master


--
Jean-Baptiste Onofré
jbono...@apache.org
http://blog.nanthrax.net
Talend - http://www.talend.com

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