override_method.rb

class Report
  def create_report
    # Left blank, sub-classes will implement this
  end
end

class XmlReport < Report
  def create_report
    puts "I am an Xml Report"
  end
end

class TextReport < Report
  def create_report
    puts "I am a Text Report"
  end
end

class HtmlReport < Report
  def create_report
    puts "I am a Html Report"
  end
end

class PdfReport < Report
  def create_report
    puts "I am a Pdf Report"
  end
end