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Can someone talk me through this answer (java question)

  • 18-01-2013 02:59PM
    #1
    veryangryman
    Registered Users, Registered Users 2 Posts: 5,710 ✭✭✭


    I have seen the answer but for life of me cant understand how its output is

    b 3

    See attached

    Can someone talk me through how this is the answer?


Comments

  • #2
    Tar.Aldarion
    Moderators, Science, Health & Environment Moderators, Social & Fun Moderators, Society & Culture Moderators Posts: 60,113 Mod ✭✭✭✭Tar.Aldarion


    There are two different a's here. Foo has Foo.a and Bar has Foo.a and Bar.a.

    So when you say f.addFive(); the Bar.a variable is being changed. Here b is printed out.

    But then the foo.a variable is printed out in the next line, which was never modified.


  • #3
    veryangryman
    Registered Users, Registered Users 2 Posts: 5,710 ✭✭✭veryangryman


    Tar.Aldarion wrote: »
    There are two different a's here. Foo has Foo.a and Bar has Foo.a and Bar.a.

    So when you say f.addFive(); the Bar.a variable is being changed. Here b is printed out.

    But then the foo.a variable is printed out in the next line, which was never modified.

    Thanks much appreciated :D


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