Polymorphism

from usenet:

Interface AorB {…}
public class ObjectA implements AorB {
    public AorB load() {
        if (needB()) {
            return new ObjectB(this);
        }else {
            return this;
        }
    }
    private boolean needB() {}
}

public class ObjectB implements AorB {
    private ObjectA a;
    ObjectB(ObjectA a) {
        this.a = a;
    }
}

Advertisement