说明：  设计一个堆栈类，堆栈类中要求有一个入栈方法，该方法向堆栈中加入一个元素。当调用入栈方法且堆栈已满时会出现堆栈已满异常。 处理异常的模块捕捉到该异常后，显示异常信息后退出系统。
(// Class design a stack, the stack class requires a stack method that added an element to the stack. When you call stack method and the stack will be the exception stack is full full. After // exception handling module to capture the exception, quit the system after an abnormal display information.)