JRuby Great Addition To Java Development

An anonymous reader writes "JRuby combines the object-oriented strength of Smalltalk, the expressiveness of Perl, and the flexibility of the Java class libraries into a single, efficient rapid development framework for the Java platform. This article introduces JRuby, a sophisticated addition to your Java development toolbox."

Comments

JRuby versus Java [code comparison - short]

[tod_miller]

JRuby

require 'java'
module Swing
include_package 'java.awt'
include_package 'javax.swing'
end
module AwtEvent
include_package 'java.awt.event'
end

$calculator = Swing::JFrame.new
class << $calculator

def init
end

end

$calculator.init
$calculator.setSiz e(400, 400)
$calculator.setVisible(true)

versus Java

import javax.swing.JFrame;
public class Calculator extends JFrame {
public Calculator(){
super("Slashdot Rul3z");
setSize(400, 400);
setVisible(true);
}
public static void main(String[] args) {new Calculator();}
}

and we have a winner

Re:JRuby versus Java [code comparison - short]

[bzhou]

vs. Jython

from java import awt
from pawt import swing

labels = ["0", "1", "2", "+",
"3", "4", "5", "-",
"6", "7", "8", "*",
"9", ".", "=", "/" ]

keys = swing.JPanel(awt.GridLayout(4, 4))
display = swing.JTextField()

def push(event):
display.replaceSelection(event.actionCommand)

d ef enter(event): # <= def, slashdot formatting bug?
display.text = str(eval(display.text))
display.selectAll()

for label in labels:
key = swing.JButton(label)
if "=" == label:
key.actionPerformed = enter
else:
key.actionPerformed = push
keys.add(key)

panel = swing.JPanel(awt.BorderLayout())
panel.add("North ", display)
panel.add("Center", keys)
swing.test(panel)

About that name

[HughsOnFirst]

So when I tell somone that this is the right tool for the job , how am I supposed to pronounce it?
ja-ru-bee? ( gummie candy treat perhaps? )
har-you-bee ?
or jay-ru-bee as though it were named after Lee Harvey Oswald's killer Jack Ruby ( J. Ruby ) ?