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Jython is an implementation of the high-level, dynamic, object-oriented language Python written in 100% Pure Java, and seamlessly integrated with the Java platform. It thus allows you to run Python on any Java platform.

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"""\
A simple demonstration of creating a swing tree widget from a
Python dictionary.
"""

data = {
    'PyObject': {
        'PyInteger': None,
        'PyFloat': None,
        'PyComplex': None,
        'PySequence': {
            'PyArray': None,
            'PyList': None,
            'PyTuple': None,
            'PyString': None,
        },
        'PyClass': {
            'PyJavaClass': None,
        },
    },
    'sys': None,
    'Py': None,
    'PyException': None,
    '__builtin__': None,
    'ThreadState': None,
}


from pawt import swing
Node = swing.tree.DefaultMutableTreeNode


def addNode(tree, key, value):
    node = Node(key)
    tree.add(node)
    if value is not None:
        addLeaves(node, value.items())


def addLeaves(node, items):
    items.sort()
    for key, value in items:
        addNode(node, key, value)


def makeTree(name, data):
    tree = Node('A Few JPython Classes')
    addLeaves(tree, data.items())
    return tree


if __name__ == '__main__':
    tree = makeTree('Some JPython Classes', data)
    swing.test(swing.JScrollPane(swing.JTree(tree)))