import java.util.*;
    public class test{
        public static void main(String[] args){
            System.out.println("请按提示输入！");
            System.out.println("1、查询余额2、取款3、转账、4、退出取卡");
            Scanner input=new Scanner(System.in);
            int money=input.nextInt();

            //想在这里加个循环，让它第四次的时候重新输入，并且输入次数有限为三！怎么做？
                switch(money){
            
                    
                    case 1:
                        System.out.println("这是500元，请收好！");
                                                    
                            
                        break;
                    case 2:
                        System.out.println("请输入要转账的金额：");
                        System.out.println("请输入要转账的账号：");
                        break;
                    case 3:
                        System.out.println("请将卡收好！");
                        break;
                    case 4:
                        System.out.println("输入有误！请重新输入！");
                }
                
            }        
        }
        
}