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J2SE 5.0 support in Web AS

Hi, All,

Since SUN JDK is downward compatible is there any specific reason that Web AS 640 J2EE stack only supports JDK 1.4.2? Is there any workaround that we can install NW 04 with JDK 1.5.0? When will Web AS support JDK 1.5?

Thanks in advance

John

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3 Answers

  • Best Answer
    Posted on Sep 28, 2005 at 07:50 AM

    Hi John,

    > SUN JDK is downward compatible

    This is only true on a very shallow point of view; it is true as the formal API in concerned. But: Not only that implementations may change (and following memory consumption, for example), but also the JVM implementation! And this - at least on SAP WAS - is critical, because the whole server really has to fight with memory settings etc.

    > Is there any workaround

    > that we can install NW 04 with JDK 1.5.0?

    You could try to eliminate any installation check. But: For the reason given above as well as for the support (or for the fact, that the support would with every problem you report first point at your JDK), I would advise not to go this way except for research purposes.

    > When will Web AS support JDK 1.5?

    Probably with the next major release (that means a year or more, the date is not announced till now).

    Hope it helps

    Detlev

    PS: Please consider to reward points for helpful answers on SDN. Thanks in advance!

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  • author's profile photo Former Member
    Former Member
    Posted on Sep 28, 2005 at 10:58 AM

    Hi, Detlev,

    Thank you very much for your informative reply. I had this question because we'd like to port an application to WebAS 6.40 which is programmed by JDK1.5. Since JDK1.5 isn't supported by 6.40 we have to 'downgrade' it to 1.4.2.

    Thanks again

    John

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    • Hi Jun,

      > we have to 'downgrade' it to 1.4.2

      Yes, if you have the sources at hand, that will be the best.

      > Thank you very much for your informative reply

      You're welcome. But please, a second reminder, consider using the stars to reward points for helpful answers on SDN. Gives us all the motivation to help, help, help 😊

      Hope it helps

      Detlev

  • author's profile photo Former Member
    Former Member
    Posted on Sep 28, 2005 at 11:07 AM

    Hi, Detlev,

    Sorry that I am new here and didn't know how to reward points at first. Hope this time it works.

    Regards

    John

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    • Hi Jun,

      > Sorry that I am new here

      No Problem.

      > and didn't know how to reward points at first

      That's why the mailing system adds this comment when informing about new answers in a thread one subscribed to:

      <i>* How to give points: Mark your thread as a question while creating it. In the answers you get, you can assign the points by clicking on the stars to the left.</i>

      Thanks and best regards

      Detlev

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