Subclassing a Java Class in JRuby

Question

Hello, everyone. I'm studying JRuby by writing a minimal Swing app in Ruby. It seems to be an effective way of finding Ruby <-> Java integration issues. ;)
I am trying to create a subclass of AbstractAction for a button whose name will be "Quit" and will exit the program. The natural Java way to do this is to have the subclass call its superclass' (AbstractAction's) constructor, as in super("Quit").
This is what I tried:
class QuitAction < javax.swing.AbstractAction
    def initialize
        super.initialize "Quit"
    end
    def actionPerformed(e)
        System::exit 0
    end
endWhen the interpreter read the file, it complained:
frame-sample.rb:78:in `initialize': private method `initialize' called for org.jruby.javasupport.proxy.gen.AbstractAction$Proxy0@911a2d:Java::JavaObject (NoMethodError)How can I call AbstractAction's constructor?
Thanks,
Keith

Answer 1

All -
I found the answer. The syntax to use is:
super 'Quit'So the corrected class is:
class QuitAction < javax.swing.AbstractAction
    def initialize
        super "Quit"
    end
    def actionPerformed(e)
        System::exit 0
    end
end- Keith