Inability to connect behavior with a Class

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Inability to connect behavior with a Class

Use two interfaces: A and AFactory

A is the interface.

AFactory implements all the factory methods as well as behavior relevant to the Class rather than any particular object.

Then you have

public class MyA implements A {

    // ...

    public class MyAFactory implements AFactory<MyA> {
        // ...
    }

}

If something else is parameterized by the interface C, we can do:

public class Container<T extends A> {

    private final AFactory<T> factory;

    private Container(AFactory<T> factory) {
        this.factory = factory;
    }

    // ...
}

Now wherever you’d like to write

T.foo(t1, t2)

you can write

factory.foo(t1, t2)