how to find if a method is overridden

how to find if a method is overridden.rb

# http://stackoverflow.com/questions/11462430/can-i-detect-that-a-method-has-been-overridden

module Ponger
  def pong
    "ping"
  end
end

class HealthCheck
  include Ponger
  
  def ping
    "pong"
  end
end

class ImportantHealthCheck < HealthCheck
  def ping
    "the-pong"
  end
  
  def pong
    "the-ping"
  end
end

class AnotherHealthCheck < ImportantHealthCheck
end

x = HealthCheck.new
y = ImportantHealthCheck.new
z = AnotherHealthCheck.new

x.method(:ping).owner #=> HealthCheck
y.method(:ping).owner #=> ImportantHealthCheck
z.method(:ping).owner #=> ImportantHealthCheck

x.method(:pong).owner #=> Ponger
y.method(:pong).owner #=> ImportantHealthCheck
z.method(:pong).owner #=> ImportantHealthCheck

def overridden?(instance, method_name)
  instance.method(method_name).owner == instance.class
end

overridden?(x, :ping) #=> true
overridden?(y, :ping) #=> true
overridden?(z, :ping) #=> false

module WTFPonger
  def pong
    "..."
  end
end

class HealthCheck
  include WTFPonger
end

health_check = HealthCheck.new
health_check.method(:pong).owner #=> WTFPonger

# how to do somthing similar in Java ?