To get Jython, please download it from Jython web site. After you download, you need to install it by command:
C:\java -jar jython_installer.2.2.1.jar
After the installation completes, please move to jython\bin directory and run jython.bat
C:\jython\bin\jython.bat
>>> print "Hello, Jython"
Hello, Jython
>>> from java.util import Vector
>>> v = Vector()
>>> dir(v)
>>> v.add('larry page')
>>> v.add('barack obama')
>>> v.add('bill gates')
>>> for value in v:
>>> print v
larry page
barack obama
bill gates

First Script In Jython