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Editorial Team
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Asked: 2026-05-15T09:42:50+00:00

I have a jython servlet as part of a large application running in tomcat5.

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I have a jython servlet as part of a large application running in tomcat5. I tested a few Spring Framework classes and create the objects in the Jython servlet. When I try to create objects of classes in the application I catch an Exception message “No visible constructors for class”. These java classes do have a public constructor class, such as:

public SchoolImpl() {
}

I create the object in python:


from com.dc.sports.entity import SchoolImpl

...

school = SchoolImpl()

What am I doing wrong?

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1 Answer

  1. Editorial Team

    doublep / cluch answered the question 🙂 in the comment

    adding just a little info:

    From the Jython FAQ :

    3.3 Why can’t I execute a ‘protected’ or ‘private’ Java instance method or access a ‘protected’ or ‘private’ attribute in a Java package?

    By default, as in Java, these methods are protected from external access. Access to all Java fields and methods can be enabled with the python.security.respectJavaAccessibility registry setting:

    # Setting this to false will allow Jython to provide access to
# non-public fields, methods, and constructors of Java objects.
python.security.respectJavaAccessibility = false
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