简单的Ruby 类

建立下面的脚本文件，命名为C:\animals.rb，使用notepad++，选择格式为以UTF-8无BOM格式编码保存：

#模块声明, 类似于名称空间
module Animals

class Animal
	# 类的默认构造函数
    def initialize(name, species)
		@name=name
		@species=species
	end
	
	#getter for name attribute
	def name
		@name
	end

	#setter for name attribute
	def  name=(nameVal)
		@name=nameVal
	end
	
	#getter for species attribute
	def species
		@species
	end

	#setter for species attribute
	def  species=(speciesVal)
		@species=speciesVal
	end
end

# 类DogAnimal继承自Animal
class DogAnimal < Animal
	def initialize(voice)
		super("Dog", "mammal")
		@voice = voice
	end
	
	#getter for voice attribute
	def voice
		@voice
	end

	#setter for voice attribute
	def  voice=(voiceVal)
		@voice=voiceVal
	end
end

end #module Animals

cat = Animals::Animal.new("Cat", "mammal");
dog = Animals::DogAnimal.new("WangWang");

3.times{
	print cat.name + " is a " + cat.species + "\n"
	print dog.name + "'s voice is: " + dog.voice + "\n"
}

=begin
#ruby命令行运行脚本
ruby c:\animals.rb

结果显示:
Cat is a mammal
Dog's voice is WangWang
Cat is a mammal
Dog's voice is WangWang
Cat is a mammal
Dog's voice is WangWang
=end