jython-users

[Jython-users] Read only attributes and other questions.

[Sebastien P. <Seb...@is...>]

Hi all,

I get a "read-only attribute" error when I try to assign a value to an
inherited protected attribute. The FAQ talks about protected static
fields, which is not the case. Is there any turnaround?

BTW, I was wondering how to access the ".class" attribute of any Object
in Java from Jython, and how to do an "instanceof" instruction in
Jython.

Cheers,

  -- Sebastien.

Re: [Jython-users] Read only attributes and other questions.

[<bc...@wo...>]

[Sebastien Pierre]

>Hi all,
>
>I get a "read-only attribute" error when I try to assign a value to an
>inherited protected attribute.

There is no support at all for direct access to protected fields.

>The FAQ talks about protected static
>fields, which is not the case. Is there any turnaround?

You could perhaps:
- Add a java setter method.
- play with the respectJavaAccessibility registry setting.

>BTW, I was wondering how to access the ".class" attribute of any Object
>in Java from Jython,

>>> import java
>>> d = java.util.Date()
>>> d.__class__
<jclass java.util.Date at 2751722>
>>>

or just use java.util.Date class directly.

>and how to do an "instanceof" instruction in Jython.

>>> if isinstance(d, java.util.Date): print "got a date!"
...
got a date!


regards,
finn