1 public class FamliyAccount 
  2 {
  3 
  4     public static void main(String[] args) 
  5     {
  6         // TODO Auto-generated method stub
  7         
  8         boolean isFlag = true;
  9         //用于记录用户的收入和支出的详情
 10         String details = "收支\t账户金额\t\t收支金额\t\t说     明\n";
 11         //初始金额
 12         int balance = 10000;
 13         while(isFlag)
 14         {
 15             System.out.println("-----------------家庭收支记账本-----------------\n");
 16             System.out.println("                   1-收支明细");
 17             System.out.println("                   2-登记收入");
 18             System.out.println("                   3-登记支出");
 19             System.out.println("                   4-退    出\n");
 20             System.out.print("                     请选择(1--4): ");
 21             
 22             
 23        
 24         
 25                 Scanner sanner = new Scanner(System.in);
 26                 String  keyBoard = sanner.next();
 27                 char c= keyBoard.charAt(0);
 28                 
 29                 switch(c)
 30                 {
 31                 case ‘1‘:
 32                     System.out.println("1-收支明细");
 33                     System.out.println("------------------当前收支明细记录------------------");
 34                     
 35                     System.out.println(details);
 36                     
 37                     System.out.println("---------------------------------------------------");
 38                     
 39                     
 40 
 41                     break;
 42                 
 43                 case ‘2‘:
 44                     System.out.println("2-登记收入");
 45                     System.out.print("本次收入金额：");
 46                     int money = sanner.nextInt();
 47                      
 48                     System.out.print("本次收入说明：");
 49                     String info = sanner.next();
 50                     
 51                     
 52                     
 53                     //处理balance
 54                     balance += money;
 55                     
 56                     //处理details
 57                     details +=("收入\t"+ balance +"\t\t" + money +"\t\t"+info+"\n");
 58                     System.out.println("---------------------登记完成----------------------");
 59                     
 60                  61                     
 62                     break;
 63                 case ‘3‘:
 64                     System.out.println("3-登记支出");
 65                     System.out.print("本次支出金额：");
 66                     
 67                     int moneyZc = sanner.nextInt();
 68                      
 69                     System.out.print("本次支出说明：");
 70                     String infoZc = sanner.next();
 71                     
 72                   //处理balance
 73                     if(balance >= moneyZc)
 74                     {
 75                         balance -= moneyZc;
 76                         //处理details
 77                         details +=("支出\t"+ balance +"\t\t" + moneyZc +"\t\t"+infoZc+"\n");
 78                     }
 79                     else
 80                     {
 81                         System.out.println("支出超出额度，支付失败！！！");
 82                     }
 83 
 84                     System.out.println("---------------------登记完成----------------------");
 85                     
 86                     
 87                     break;
 88                 case ‘4‘:
 89                     System.out.print("确认是否退出?(Y/N):");
 90                     for(;;)
 91                     {
 92                     
 93                         String str = sanner.next();
 94                         char exit = str.charAt(0);
 95                         if(exit == ‘Y‘||exit ==‘y‘)
 96                           {
 97                             
 98                               System.out.println("已退出");
 99                               break;
100                           }
101                           else if(exit == ‘N‘|| exit ==‘n‘)
102                           {
103                               System.out.println("已取消退出");
104                           }
105                           else
106                           {
107                               System.out.println("输入有误,请重新输入：");
108                              // break;
109                           }
110                     }
111                 
112 
113                 }
114                 
115                 
116                
117             
118                 
119             
120             
121         }
122 
123     }
124 
125 }