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Groups > comp.lang.java.help > #1092

Trouble with updating reference variables through method calls

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Hello,

If this sort of code actually works (which I doubt), I might have to
post some of my actual code for help.

Why is foo1 updated in updateFoo but not in main() (if choice is 1)?

class Bar {
    private static void getNewFoo() {
        Foo foo = new Foo();
        return foo;
    }

    private static void updateFoo(Foo foo1, Foo foo2, Foo foo3) {
        int choice = getChoice();
        ...
        if (choice == 1)
            foo1 = getNewFoo();
        ...
    }

    public static void main(String[] args) {
        Foo foo1 = new Foo();
        Foo foo2 = new Foo();
        Foo foo3 = new Foo();
        updateFoo(foo1, foo2, foo3);
    }

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Trouble with updating reference variables through method calls Fred <albert.xtheunknown0@gmail.com> - 2011-09-22 17:42 -0700
  Re: Trouble with updating reference variables through method calls Lew <lewbloch@gmail.com> - 2011-09-22 18:01 -0700
  Re: Trouble with updating reference variables through method calls Eric Sosman <esosman@ieee-dot-org.invalid> - 2011-09-22 22:47 -0400
  Re: Trouble with updating reference variables through method calls Roedy Green <see_website@mindprod.com.invalid> - 2011-09-22 20:29 -0700
  Re: Trouble with updating reference variables through method calls Roedy Green <see_website@mindprod.com.invalid> - 2011-09-22 20:33 -0700
  Re: Trouble with updating reference variables through method calls Roedy Green <see_website@mindprod.com.invalid> - 2011-09-22 20:34 -0700
  Re: Trouble with updating reference variables through method calls Travers Naran <tnaran@gmail.com> - 2011-09-22 21:27 -0700

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