Simplify the initialization of and application (currently done with singletons)

Question

Say I have two startup classes:
class A extends Parent {
    public void startUp() {
        Foo.getInstance().init();
        Moo.getInstance().init();
        // and 25 more of the same kind
class B extends Parent {
    public void startUp() {
        Foo.getInstance().init();
        AnotherMoo.getInstance().init();
        // and 25 more of the same kind
}As you can see both classes inherit from one parent.
Singleton init() methods are called in a specific sequence and it is important to maintain that sequence.
Problem: I'd like to simplify startUp() methods. Ideally i'd like to keep information on all singleton dependencies at one place, perhaps I will end up pushing them up into the Parent class, perhaps it can be resolved using Spring or some other application framework...? Anyway what would be your advice on how to get rid of initialization in two separate classes?

Answer 1

I can't see how this would help... I'm trying to move duplicated code from two places into one place. Let me illustrate the problem on a different example, say you have:
// A.java
Foo1.getInstance().init();
Foo2.getInstance().init();
Foo3.getInstance().init();
Foo4.getInstance().init();
XXX.getInstance().init(); /* It is important this particular call has happened after Foo4.getInstance().init(); and before Foo5.getInstance().init(); */
Foo5.getInstance().init();
Foo6.getInstance().init();
// B.java
Foo1.getInstance().init();
Foo2.getInstance().init();
Foo3.getInstance().init();
Foo4.getInstance().init();
YYY.getInstance().init(); /* It is important this particular call has happened after Foo4.getInstance().init(); and before Foo5.getInstance().init(); */
Foo5.getInstance().init();
Foo6.getInstance().init();
// ...So what i'm trying to do is - consolidate code and make it run (or get configured) at one place, and I explore every available opportunity not just core Java functionality