Issue1540

This code crashes always on my machine:

from javax.swing import *

class PanelTest(JPanel):
    def paintComponent(self, g):
        super(PanelTest, self).paintComponent(g)

if __name__ == '__main__':
    frame = JFrame("Jython Swing Test")
    frame.setDefaultCloseOperation(WindowConstants.EXIT_ON_CLOSE)
    pnl = PanelTest()
    frame.add(pnl)
    frame.pack()
    frame.setVisible(True)

Also seen in trunk

The workaround is to use super__PROTECTED_METHOD. This is an old form in Jython, that predates the use of the super function in Python 2.2.

Of course it's reasonable that super should simply work, or the alternative, to specify the super type directly, without super(), that is

JPanel.paintComponent(self, g)

But they don't, yet. This looks like a gap that opened when we implemented new-style classes in Jython, and made Java types new-style as well.

Presumably we need to look at modifying the code in or around org.python.core.PyReflectedFunction.

In particular, this is related to our attempt to work around this issue:
http://bugs.sun.com/bugdatabase/view_bug.do?bug_id=4071957

This issue still exists in v2.7 beta 1...

Simpler example:

    import java

    class D(java.util.Date):
        def toString(self):
            return super(D, self).toString()

Then you can reproduce the issue with:

>>> D()

Target beta 4

Top priority for 2.7.1

Fixed as of https://hg.python.org/jython/rev/95d09ba14aa7

A