1 package com;
2
3 import java.text.SimpleDateFormat;
4 import java.util.Date;
5 import java.util.Scanner;
6
7 public class Demo{
8 public static void main(String[] args) {
9 Scanner input = new Scanner(System.in);
10
11 String[] names = new String[10];
12 String[] states = new String[10];
13 String[] date = new String[10];
14 int[] counts = new int[10];
15
16 names[0]="罗宁";
17 states[0]="可借";
18
19 names[1]="死亡之翼";
20 states[1]="可借";
21
22 names[2]="国王之谷";
23 states[2]="可借";
24
25 names[3]="闪光平原";
26 states[3]="可借";
27
28 String isBack = "";
29
30 do{
31 System.out.println("欢迎使用迷你DVD管理系统");
32 System.out.println("---------------------");
33 System.out.println("1.新增DVD");
34 System.out.println("2.查看DVD");
35 System.out.println("3.删除DVD");
36 System.out.println("4.借出DVD");
37 System.out.println("5.归还DVD");
38 System.out.println("6.退出DVD");
39 System.out.println("---------------------");
40
41 System.out.println("请选择：");
42 int choose = input.nextInt();
43
44 if(choose == 6){
45 break;
46 }
47
48 switch(choose){
49 case 1:
50 System.out.println("--->新增DVD");
51 //定义保存信息的下标
52 int index1=-1;
53 for(int i = 0;i<names.length;i++){
54 if(names[i]==null){
55 index1=i;
56 break;
57 }
58 }
59 //判断是否可以保存
60 if(index1==-1){
61 System.out.println("保存满了，请稍候再试");
62 }else{
63 System.out.println("请输入新增DVD名称!");
64 String name = input.next();
65
66 names[index1]=name;
67 states[index1]="可借";
68
69 System.out.println("增加成功-_-!");
70 }
71
72 break;
73 case 2:
74 System.out.println("--->查看DVD");
75 int count = 1;
76
77 System.out.println("序号\t状态\t名称\t\t借出日期\t\t借出次数");
78 for(int i = 0;i<names.length;i++){
79 if(date[i]==null){
80 date[i]="";
81 }
82 if(names[i]==null){
83 continue;
84 }
85 System.out.println();
86 System.out.println(count+"\t"+states[i]+"\t"+date[i]+"\t"+counts);
87 count++;
88 }
89 break;
90 case 3:
91 System.out.println("--->删除DVD");
92 System.out.println("请输入要删除DVD的名称：");
93 String delName=input.next();
94
95 int index3 = -1;
96 for(int i = 0;i<names.length;i++){
97 if(delName.equals(names[i])){
98 if("可借".equals(states[i])){
99 index3=i;
100 break;
101 }
102 index3=-2;
103 break;
104 }
105 }
106 if(index3==-1){
107 System.out.println("输入的DVD信息不存在，请重新输入！！！！");
108 }else if(index3==-2){
109 System.out.println("该DVD已借出，不能删除!!!");
110 }
111 else{
112 names[index3]=null;
113 System.out.println("删除成功！！！");
114 }
115 break;
116 case 4:
117 System.out.println("--->借出DVD");
118 System.out.println("请输入要借的DVD名称：");
119 String borrowName = input.next();
120
121 int index4=-1;
122
123 //循环遍历该DVD是否存在
124 for(int i = 0;i<names.length;i++){
125 if(borrowName.equals(names[i])){
126 if("可借".equals(states[i])){
127 index4=i;
128 break;
129 }
130 index4=-2;
131 break;
132 }
133 }
134 if(index4==-1){
135 System.out.println("输入的DVD信息不存在！！！");
136 }else if(index4==-2){
137 System.out.println("该DVD已借出！");
138 }else{
139 Date d =new Date();
140 SimpleDateFormat df=new SimpleDateFormat();
141 String dateStr=df.format(d);
142
143 states[index4]="已借出";
144 date[index4]=dateStr;
145 counts[index4] = counts[index4]+1;
146 System.out.println("借出成功！");
147 }
148 break;
149 case 5:
150 System.out.println("--->归还DVD");
151 System.out.println("请输入要归还的DVD名称：");
152 String backName=input.next();
153
154 int index5=-1;
155 for(int i = 0;i<names.length;i++){
156 if(backName.equals(names[i])){
157 if("已借出".equals(states[i])){
158 index5=i;
159 break;
160 }
161 index5=-2;
162 break;
163 }
164 }
165 if(index5==-1){
166 System.out.println("该DVD不存在，不能归还！");
167 }else if(index5==-2){
168 System.out.println("该DVD未借出，无法归还！");
169 }else{
170 states[index5]="可借";
171 date[index5]="";
172 System.out.println("归还成功!");
173 }
174 break;
175
176 }
177 System.out.println("****************************");
178 System.out.println("输入0返回");
179 isBack=input.next();
180 }
181 while(isBack.equals("0"));
182 System.out.println("谢谢使用！");
183 }
184 }
