Java 1.5 - 1.7 and JNLP

Posted on 2014-08-11
Last Modified: 2014-08-13
Here's the situation, we have two applications; one runs with Java 1.5 and other with 1.6.  At the moment, I have 1.5 and 1.6 installed and both of these applications start.  When I install Java 1.7, then the application that needs 1.6 does not run.  I did not test to see if the 1.5 app starts when 1.7 was installed.
I'm not the developer, and I don't know the connection between Java 1.7 and JNLP relative to our applications, but this is the problem;  When I have Java 1.7 installed the application which uses Java 1.6 does not start.  The javaws stopped at the "app.jnlp"  My question is; what might be the problem.  I realize that I have not provided enough information, yet I am looking for a point to start, moving toward a solution.  I'm now trying to get a hold of the various jnlp files that are used.
My other question is; is there a way of inserting "breakpoints" into the jnlp files?
Question by:chima
    LVL 6

    Expert Comment

    by:Ravi Kalla
    One quick solution for this would be to install all JREs(1.5, 1.6 & 1.7) and point your application to the corresponding JRE during application startup.

    Author Comment

    Ravi, this is true, but it be nice for this selection to be done automatically.

    Author Comment

    Might this error message be helpful:
    #### Java Web Start Error:
    #### Missing required Permissions manifest attribute in main jar: http://jlvqaappm:8180/tiger-qa/lib/Tiger-Desktop_obfs.jar
    LVL 6

    Accepted Solution

    There seem to be a security enhancement starting from Java7 update 51.

    Please refer below link for reference -

    Author Closing Comment


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