Hi,

I have a class that implements "Singleton Pattern",
I need to subclass this base class.
I found a lot of example on the net but it does
not work for my application.
The class allows to save preferences, but the preferences
are not the same for all the applications of the project.
That is why I need to have several classes.

The main class is the following:
public class MyBaseClass
{
private File m_prefsFile;
private static Hashtable m_registry = new Hashtable();
private static MyBaseClass s_instance = null;

protected MyBaseClass()
{
File file = new File("Base.xml");
setFile(file); // access to property m_prefsFile
m_registry("MyBaseClass", this);
}

public static MyBaseClass GetSingleInstance(String _name)
{
(MyBaseClass)m_registry.get(_name);
}
}

My problem is when I call the method GetSingleInstance
the return value is always null. With the debugger I never
pass in the constructor MyBaseClass (or subclass constructor).
Why ?

Thanks in advance
Sandra