JPype - Issue importing & calling methods!

Here I'm attaching my code below

from jpype import *
from javax.swing import JFrame

classpath = "-Djava.class.path=praat.jar" 
startJVM(getDefaultJVMPath(),"-ea",classpath) 

frame = javax.swing.JFrame("Hello JPype")
label = javax.swing.JLabel("Hello JPype!", JLabel.CENTER)
frame.add(label)
frame.setDefaultCloseOperation(JFrame.EXIT_ON_CLOSE)
frame.setSize(200, 100) 
frame.show()
shutdownJVM()

When i run this program I get an error.

    开发者_Python百科/Library/Python/2.6/site-packages/jpype/_pykeywords.py:18: DeprecationWarning: the sets module is deprecated
  import sets
2010-02-01 22:26:27.473 Python[754:d07] Apple AWT Java VM was loaded on first thread -- can't start AWT.
Traceback (most recent call last):
  File "swing.py", line 10, in <module>
    frame = javax.swing.JFrame("Hello Jython")
  File "/Library/Python/2.6/site-packages/jpype/_jpackage.py", line 53, in __call__
    raise TypeError, "Package "+self.__name+" is not Callable"
TypeError: Package javax.swing.JFrame is not Callable

Is there any way to solve this problem. A normal Hello World program works fine, but when I'm trying to import packages I get similar issues.

Add the Java runtime library (rt.jar) to the classpath and try again. The error indicates, that JFrame can't be found but it is inside rt.jar.

If you import JFrame into the local namespace, use it without the full namespace:

frame = JFrame("Hello Jython")

Same with JLabel, but remember to import it first.

To use the full namespace you need import javax.swing instead of from javax.swing import JFrame.