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Can you clear this up for me…

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  • #229759 Reply

    harryajh
    Member

    Got your email regarding MyEclipse 4.0 Milestone-1

    I currently use ME 3.8.4+QF2 in Eclipse 3.0.1 on win 2000 (sp4)

    The J2EE app I’m developing runs on weblogic 8.1 (sp3) & uses jdk142_04 that comes with it.

    Your email state’s that ME 4 needs 1.4.2_05 or higher. I’d like to use the new features but am not sure if I can, so –

    If I download & install 1.4.2_05 or higher & add & set this as the default in preferences | java | Installed JRE’s am I right in assuming my weblogic instance will still be run in jdk142_04 but the app building will be run in jdk142_05? so as long as I’m careful not to use any jdk142_05 specific features I should be able to us ME 4?

    Sorry if long winded & hopefully I’ve explained it clearly enough?

    many thanks

    harry

    #229778 Reply

    Scott Anderson
    Participant

    Harry,

    First, we recommend that you leave you existing Eclipse/MyEclipse/JDK installations in tact. MyEclipse 4.0M1 is really a developmental milestone so while we encourage you to download and try it out we discourage you from modifying your production environment. We simply don’t want to cause you any issues if you find a “fatal flaw” or something.

    That said, we recommend to try out the release that you download and install a fresh copy of Eclipse 3.0.2 and MyEclipse 4.0M1. That will give you two MyEclipse enviornments, your production one and the milestone build. For the JDK, you can install JDK 1.4.2_08 from Sun. The only thing that matters from the MyEclipse perspective is that the JDK used to run Eclipse (not WebLogic) be 1.4.2_05+ because those builds fix JDK bugs that affect our UML tooling. You can leave all your existing JDKs installed as well. To specify to Eclipse which JDK it should use to run the application you can modify the shortcut that starts Eclipse to place the following arguments on the commandline:
    eclipse.exe -vm <path-to-jdk-1.4.2_08-install>\bin\javaw.exe -vmargs -Xms128M -Xmx256M
    The -vm specifies which JDK to use and the arguments after -vmargs go to that JVM increasing the heap size.

    Sound ok?

    #229891 Reply

    harryajh
    Member

    thanks for that, just one more question then

    If I have 2 installations of Eclipse & ME can I import the same project in to both without effecting the other? just so I can see if the new versions are worth it without messing up my original!

    #229915 Reply

    Scott Anderson
    Participant

    You can set up two workspaces and import an existing project into the new one to try everything out. That’s the safest thing to do.

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