JAVA运用五种设计模式实现医院挂号管理系统

import java.util.Scanner; public class Main { public static void main(String[] args) { Hospital hospital=Hospital.getInstance(); Scanner input=new Scanner(System.in); int c=1; PaymentMethod paymentMethod=new PaymentMethod(new WechatPay()); ManagePatient managePatient=new ManagePatient(); while(c!=0){ System.out.println("1选择支付方式，2添加挂号信息，3改变医院营业状态，4显示挂号信息"); c=input.nextInt(); int op; if(c==1){ System.out.println("1选择微信支付，2选择支付宝支付"); op=input.nextInt(); if(op==1){ paymentMethod.setPayment(new WechatPay()); paymentMethod.pay(300); } else{ paymentMethod.setPayment(new Alipay()); paymentMethod.pay(300); } } else if(c==2){ System.out.println("请输入病人姓名与花费钱数"); String name=input.next(); int price=input.nextInt(); managePatient.add(new Patient(name,price)); } else if(c==3){ System.out.println("输入1医院营业。2医院停业"); int ops=input.nextInt(); if(ops==1){ StartState startState = new StartState(); startState.doAction(hospital); } else{ StopState stopState = new StopState(); stopState.doAction(hospital); } } else{ managePatient.show(); } } } }