电梯系统，这是用java netbean 写的简单程序。这程序是篇写于三层楼的独立房子。-A simple elevator system that able the user use to control the elevator the different level to the specific level that the user press.

简单地三层电梯程序，通过代码实现电梯上行下降及开关门(Simply three layers of elevator program, through the code to achieve the elevator down and open the door)