Why Document.isDefaultNamespace() is false?

[Pho Tek]

I have an XML instance with a declared default namespace.

When I parse it with the DocumentBuilder, it returns me a Document reference. And calling Document.isDeclaredNamespace() always returns false; which is wrong. Why ?

[Paul Clapham]

I'm confused. Are you asking about the org.w3c.dom.Document class? Because I don't see an isDeclaredNamespace() method in the documentation. There is an isDefaultNamespace() method, but it takes a String as a parameter and tells you whether that String is the URI of the default namespace. You didn't mention anything about passing a String to the method, and it does matter what String you pass it.