#############################################

#create ruby a class

#@符号表示实例变量，相当于java的private 属性

#############################################

class Person

    def initialize(name,age)

        @name    =name

        @age    =age

    end

end

jake = Person.new("jake",18)

#inspect 方法可以发送给任何对象

puts jake.inspect

puts jake.to_s

#为类添加新的属性

class Person

    def to_s

        "Person name=#{@name}-age=#{@age}"

    end

end

she = Person.new("she",18)

puts she.to_s#Person name=she-age=18

###############################

#继承

###############################

class ChinaPerson <Person

    def initialize(name,age,color)

        super(name,age)#使用父类方法

        @color    =color

    end

end

huNanShe = ChinaPerson.new("hunanshe",20,"yellow")

puts huNanShe.to_s#Person name=hunanshe-age=20