建立一个超类House, 和一个子类Home,并提供一系列属性和方法,包括printDetails方法, 这个方法要采用多态性 *建立一个House和Home的异类集合, 测试printDetails方法的多态性 -The establishment of a super-category House, and a sub-category of Home, and to provide a series of attributes and methods, including prin