PayByCash
+ PayByCash（Integer payMoney）+ payInfo() : void
PaymentFactory
PayByAlipay
+ PayByAlipay（Integer payMoney）+ payInfo() : void
PayByCard
+ PayByCard（Integer payMoney）+ payInfo() : void
PayByWeChat
+ PayByWeChat（Integer payMoney）+ payInfo() : void
Client
+ main(String[] args) : void
Payment
# payMoney ：Integer
+ Payment（Integer payMoney）+ payInfo() : void
