ruby
require 'java'
java_import 'javax.swing.JFrame'
java_import 'javax.swing.JButton'
java_import 'java.awt.FlowLayout'
class HelloWorld < JFrame
def initialize
super("Hello World")
set_layout(FlowLayout.new)
button = JButton.new("Click Me!")
puts "Button Clicked!"
end
add(button)
set_default_operation(JFrame::EXIT_ON_CLOSE)
set_size(300, 200)
set_visible(true)
end
end
HelloWorld.new
jruby hello_world.rb
