To stupid to live??? Problems with coercing non-numeric types.

Hi all,

Apologies if I'm being too stupid to live, but I'm having problems calling Java methods from within Jython.

Specifically I have a method that takes a string one of its parameters.  I can call this fined from python if I pass in a string literal:

        x.myMethod(y, "a string")

But, if I pass in a python object:

z = Z("a string")
x.myMethod(y, z)

Then I have defined then I get "TypeError: myMethod(): 2nd arg can't be coerced to String".

Z is a very simple wrapper class that wraps a string.  (In my real code it does more then this, but for this example all it does is wrap a string.)

class StringValue:
    def __init__(self, text):
        self.text = text
        return

    def __repr__(self):
        return repr((str(self.__class__), self.text))

    def __str__(self):
        return self.text

    def __coerce__(self, other):
        try:
            result = coerce(str(self), other)
        except TypeError:
            result = None
        return result

So all of the following work fine with Z:

print z                 #calls z.__str__()
print repr(z)                   #calls z.__repr__()
print "z is " + z + "."         #calls z.__coerce__()

But the x.myMethod(y, z) does not work, and does not call z.__coerce__() either.

Any help much appreciated!

Thanks in advance,
Alex.