Basic Jython Tutorial

HelloWorld program (HelloWorld.py)

 #import the sys  module and reference it by sys.
 import sys;
 
 print "Hello World"
 sys.exit() 

 from sys import *;
 
 print "Hello World"
 exit() #No prefix required for import statement

 import sys;
 #import the math module and reference it by math.
 import math;
 
 print "PI = %f" % math.pi
 sys.exit()

 import sys as s; #Refer sys as s
 import math as m;
 
 print "PI = %f" % m.pi
 del m #undo math import, can not use 'm' below this
 s.exit()

 x = raw_input("Please enter your name:")
 print "Hello " + x

 x = int(raw_input("Please enter a number:"))
 if x < 0:
     print "Negative Number"
 elif x == 0:
     print "Zero"
 elif x > 0:
     print "Positive Number"

 for x in [1, 2, 3]:
     print x

 #Fibonacci Series
 a, b = 0, 1
 while b < 10:
     print b, #Trailing comma avoids new line
     a, b = b, a+b #Remember same indentation and no lone break

 x = int(raw_input("Please guess the lucky number:"))
 while 1:
     if x == 5:
         print "Congratulations, you win !!"
         break
     else:
         x = int(raw_input("Please guess another number:"))

 print range(10) #Output: [0, 1, 2, 3, 4, 5, 6, 7, 8, 9]
 
 print range(3, 10) #Output: [3, 4, 5, 6, 7, 8, 9] i.e. from 3 to 10
 
 print range(3, 10, 2) #Output: [3, 5, 7, 9] i.e. from 3 to 10 every 2nd

 def func(x):
     print x
 func(2)

 import java
 print java.lang.System.getProperties()['java.class.path']

 C:\jython-2.1\jython.jar

 import javax.swing as swing
 
 win = swing.JFrame("Hello World")
 win.size = (200, 100)
 win.show()

 import org.python.core.*;
 import org.python.util.*;
 
 public class HelloWorldPy {
     public static void main(String[] args) {
         PySystemState.initialize();
         PythonInterpreter intrp = new PythonInterpreter();
 intrp.execfile("C:\\eclipse\\workspace\\MyJythonProject\\src\\HelloWorld.py");
     }
 }

Contributors

Jyotirmaya Nanda

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Last Updated 9/3/2007 1:39:01 AM by '69.140.221.136'
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