Hi,

I'm trying to create a Java class that will be used in JS with a
varargs constructor.

As I understand it, I can't declare a jsConstructor and have it work
with varargs. The next thing I tried was, following the documentation
of FunctionObject, to create a constructor with the arguments (Context
cx, Object[] args, Function ctorObj, boolean inNewExpr), create a
FunctionObject for this constructor and add it with scope.put(). This
also doesn't work: I get a ClassCastException in the JS line that
creates the object: something tries to cast the new class object to
the class of the scope it's in (and they're unrelated - thus the
exception).

As an alternative, I see the addAsConstructor() method of the
FunctionObject but whatever I give as the prototype argument makes it
fail in different ways.

So, how to create a hosted Java class accessible to the JS code with a
varargs constructor?
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