Re: Check if a final field is initialized

Hi

I am creating a singleton that shall be accessed by multiple threads, =

possibly simultaneously... here is my code

public class FooEngine implements FooInterface {

    private static final m_barElement;

    public static FooInterface getBarInstance() {

        synchronized (BarElement) {
            if (null == m_barElement) m_barElement = new FooEngine();
        }

        return m_barElement;
    }
}

Somehow I need to check if m_barElement is initialized... in C# I =

generally check for null, yet in Java it seems as though I have to =

explicitly initialize it to null... but this would then mean that I =

cannot assign it to an instance later.

Setting it to an instance of FooEngine at declaration is not an option=

since FooEngine requires lots of other preparatory work prior to it's =

being instantiated.