Difference between @instance_variable and attr_accessor

Question

I Just started learning ruby and I don\'t see the difference between an @instace_variable and an attribute declared using attr_accessor.

Wh

Answer 1

And another answer more compact (for Java developers) attr_accessor :x creates the getters and setters to @x

class MyClassA
  attr_accessor :x
end

is the same as

class MyClassB
  def x=(value) #java's typical setX(..)
    @x=value
  end
  def x
    @x
  end
end