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Java JRE vs. J2RE

  • 1.  Java JRE vs. J2RE

    Posted Thu October 24, 2013 03:33 AM

    Originally posted by: cedde


    Hi,

    Running java -version on AIX 5.3 gives, J2RE 1.6.0, see below:

    Java(TM) SE Runtime Environment (build pap3260-20071123_01)

    IBM J9 VM (build 2.4, J2RE 1.6.0 IBM J9 2.4 AIX ppc-32 jvmap3260-20071121_15015 (JIT enabled)

    J9VM - 20071121_015015_bHdSMR

    JIT - r9_20071121_1330

    GC - 20071031_AA)

    JCL - 20071118_01

     

     

     but when running java -version on AIX 7.1 gives, JRE 1.6.0, se below:

    Java(TM) SE Runtime Environment (build pap3260sr11-20120806_01(SR11))

    IBM J9 VM (build 2.4, JRE 1.6.0 IBM J9 2.4 AIX ppc-32 jvmap3260sr11-20120801_118201 (JIT enabled, AOT enabled)

    J9VM - 20120801_118201

    JIT - r9_20120608_24176ifx1

    GC - 20120516_AA)

    JCL - 20120713_01

     

    Do I have an old JVM installed on AIX 7.1?

     

    Thanks in advance / Per

     

     

     



  • 2.  Re: Java JRE vs. J2RE

    Posted Mon October 28, 2013 06:30 PM

    Originally posted by: efabianb


    Hello Cedde.

    Not necesarally, You can have lots of java versions installed, it all depends on where the symbolic link points to.

     

    for example in my test box I have version 1.4.2 and version 1.5.0 installed.

    /usr/java14/bin/java -version
    java version "1.4.2"
    Java(TM) 2 Runtime Environment, Standard Edition (build 1.4.2)
    Classic VM (build 1.4.2, J2RE 1.4.2 IBM AIX build ca142-20080122 (SR10) (JIT enabled: jitc))

     

    /usr/java5/bin/java -version
    java version "1.5.0"
    Java(TM) 2 Runtime Environment, Standard Edition (build pap32devifx-20110627 (SR12 FP5 ))
    IBM J9 VM (build 2.3, J2RE 1.5.0 IBM J9 2.3 AIX ppc-32 j9vmap3223ifx-20110624 (JIT enabled)
     

    Regards.