Adfaith Consulting是上海的一个小咨询公司，创建于1992年，目前已经有600名以上的全职员工。请创建一个小mis(Management Information System)系统，主要完成对该公司员工信息的管理。在该系统中，员工信息存储在一个名为records的文本文件(或xml文件或其它类型存储)中。
111:02-98781999:Williams:Nick:T:35:Computer Officer:14-10-2000
112:02-99893878:Brown:Sarah:B:12:Electrician:09-02-1992
131:02-95673456:Couch:David:A:26:Consultant:23-04-1994
236:02-95437869:Anderson:Sarah:K:19:CEO:21-09-1988
553:03-99999999:Coles:David:M:12:Manager:12-12-1999
869:02-95671660:Jones:Sarah:B:45:Sales Manager:14-12-1995
148:02-93272658:Smith:John:C:43:Technical Manager:21-10-1988
372:02-12345678:Miller:Sam:B:22:Engineer:12-03-1998
059:02-95673455:Chen:Xiao:Y:26:Consultant:01-05-2003
812:02-98781987:Xue:Fei:L:35:Computer Officer:10-08-1998
619:02-95436669:Wang:Mengjie:X:26:Consultant:12-02-2001
员工信息必须满足以下规范
· employee payroll number:3位数字
· telephone number：XX-XXXXXXXX （X都为数字，详细要求见下文P8）
· name, (last name, first name, initial) （必须都为英文）
· department number, （都为数字）
· job title （必须都为英文）
· date of hiring. XX-XX-XXXX（X都为数字）
Menu.java 是程序的主菜单页面，它实现以下七个功能
1. Displaying all current employee records on the screen.
2. Displaying all current employee records (formatted and sorted) on the screen. (工号)
3. Displaying only names and phone numbers on the screen.
4. Displaying only names and phone numbers (formatted and sorted) on the screen. （名字）
5. Searching for and displaying specific employee record(s).
6. Add new records to the records file.
7. Delete records from the records file.
1 2 3 4主要实现的是显示功能，5实现的是查找功能，6实现的增加功能，7实现的是删除功能。
以下详细描述项目的需求
Adfaith Consulting – Employee Information – Main Menu
=====================================================
1 – Print All Current Records
2 – Print All Current Records (formatted)
3 – Print Names and Phone Numbers
4 – Print Names and Phone Numbers (formatted)
5 – Search for specific Record(s)
6 – Add New Records
7 – Delete Records
Q – Quit
Your Selection: | (waiting for user input)
· 如果上述内容不存在，或者records不存在，, 程序应该提示并终止运行。
比如, 如果records 不存在，应该显示
“Required file – records, does not exist.”, 然后退出程序。
· 在menu菜单上，如果用户的选择输入的不是1, 2, 3, 4, 5, 6, 7或 Q, 程序应该显示"Invalid code! Press Enter to continue…" (这时候，程序的光标应该停在这个消息的后面，而不能停在下一行的开头). 当 用户重新敲回车后，最初的主菜单重新显示以便用户重新做选择。用户可以通过输入Q 或q退出程序.
· 在menu菜单上，，如果用户的选择输入仅仅敲回车，应该提示"No selection entered. Press Enter to continue…"(这时候，程序的光标应该停在这个消息的后面，而不能停在下一行的开头). 当 用户重新敲回车后，最初的主菜单重新显示以便用户重新做选择。
When the User Selects Option 1 – Print All Current Records
Here is a sample output from menu when the user selects option 1 from the main menu:
(The main menu here)
Your Selection: 1 (user input)
111:02-98781999:Williams:Nick:T:35:Computer Officer:14-10-2000
112:02-99893878:Brown:Sarah:B:12:Electrician:09-02-1992
131:02-95673456:Couch:David:A:26:Consultant:23-04-1994
236:02-95437869:Anderson:Sarah:K:19:CEO:21-09-1988
553:03-99999999:Coles:David:M:12:Manager:12-12-1999
869:02-95671660:Jones:Sarah:B:45:Sales Manager:14-12-1995
148:02-93272658:Smith:John:C:43:Technical Manager:21-10-1988
372:02-12345678:Miller:Sam:B:22:Engineer:12-03-1998
059:02-95673455:Chen:Xiao:Y:26:Consultant:01-05-2003
812:02-98781987:Xue:Fei:L:35:Computer Officer:10-08-1998
619:02-95436669:Wang:Mengjie:X:26:Consultant:12-02-2001
Press Enter to continue… (Waiting here for the user to press Enter. After the user presses Enter, the main menu is displayed again)
(Note the difference between the above output and the content of the records file: all the colons (:) have been replaced by spaces))
When the User Selects Option 2 – Print All Current Records (formatted)
Here is a sample output when the user selects option 2 from the main menu:
(The main menu here)
Your Selection: 2 (user input)
Anderson Sarah K 236 02-95437869 19 CEO 21-09-1988
Brown Sarah B 112 02-99893878 12 Electrician 09-02-1992
Chen Xiao Y 059 02-95673455 26 Consultant 01-05-2003
Coles David M 553 03-99999999 12 Manager 12-12-1999
Couch David A 131 02-95673456 26 Consultant 23-04-1994
Jones Sarah B 869 02-95671660 45 Sales Manager 14-12-1995
Miller Sam B 372 02-12345678 22 Engineer 12-03-1998
Smith John C 148 02-93272658 43 Technical Manager 21-10-1988
Wang Mengjie X 619 02-95436669 26 Consultant 12-02-2001
Williams Nick T 111 02-98781999 35 Computer Officer 14-10-2000
Xue Fei L 812 02-98781987 35 Computer Officer 10-08-1998
Press Enter to continue… (Waiting here for the user to press Enter. After the user presses Enter, the main menu is displayed again)
(Note that the above output has been formatted and sorted by family name. Each column must be left justified.)
When the User Selects Option 3 – Print Names and Phone Numbers
Here is a sample output when the user selects option 3 from the main menu:
(The main menu here)
Your Selection: 3 (user input)
Williams,Nick,02-98781999
Brown,Sarah,02-99893878
Couch,David,02-95673456
Anderson,Sarah,02-95437869
Coles,David,03-99999999
Jones,Sarah,02-95671660
Smith,John,02-93272658
Miller,Sam,02-12345678
Chen,Xiao,02-95673455
Xue,Fei,02-98781987
Wang,Mengjie,02-95436669
Press Enter to continue… (Waiting here for the user to press Enter. After the user presses Enter, the main menu is displayed again)
(Note the difference between the above output and the content of the records file. The colons have been replaced by comma. For each entry, only the name and the phone number is displayed)
When the User Selects Option 4 – Print Names and Phone Numbers (formatted)
Here is a sample when the user selects 4 on the main menu,
(The main menu here)
Your Selection: 4 (user input)
Anderson Sarah 02-95437869
Brown Sarah 02-99893878
Chen Xiao 02-95673455
Coles David 03-99999999
Couch David 02-95673456
Jones Sarah 02-95671660
Miller Sam 02-12345678
Smith John 02-93272658
Wang Mengjie 02-95436669
Williams Nick 02-98781999
Xue Fei 02-98781987
Press Enter to continue… (Waiting here for the user to press Enter. After the user presses Enter, the main menu is displayed again)
(Note that the above output has been formatted and sorted by family name. Each column must be left justified.)
When the User Selects Option 5 – Search for specific Record(s)
Here is a sample when the user selects 5 on the main menu,
(The main menu here)
Your Selection: 5 (user input)
Enter keyword: Jones (user input)
869:02-95671660:Jones:Sarah:B:45:sales manager:14-12-1995
Press Enter to continue… (Waiting here for the user to press Enter. After the user presses Enter, the main menu is displayed again.)
如果用户输入的关键字找不到匹配的员工记录，则生成下面页面
(The main menu here)
Your Selection: 5 (user input)
Enter keyword: Monks (user input)
Keyword – Monks – not found
Press Enter to continue… (Waiting here for the user to press Enter. After the user presses Enter, the main menu is displayed again.)
如果用户没有输入任何关键字而直接按回车，则生成下面页面
(The main menu here)
Your Selection, 5 (user input)
Enter keyword: (user simply presses the Enter key without typing in anything)
No keyword entered – try again…
Enter keyword: (still wanting for the user to type in something)
· 用户输入的关键字应该是大小写不敏感的， (比如 JONES 和 jones产生一样的输出).
(The main menu here)
Your Selection, 6 (user input)
Adfaith Consulting – Employee Records:
======================================
Employee Record Additions:
Enter the following details of the new employee:
Employee 3 digit payroll number
Phone Number
Last Name
First Name
Middle Init
Dept #
Job Title
Date Hired
Enter employee 3 digit payroll number: 123 (user input)
(你的程序应该强制要求用户输入一个有效的员工号，你的程序应该能够验证用户输入的合法性)
If the user simply presses the Enter key, the following must be produced,
Enter employee 3 digit payroll number: (user simply presses the Enter key)
No payroll number entered – try again
Enter employee 3 digit payroll number: abc (user inputs invalid characters)
Payroll number can contain only numerical characters
Enter employee 3 digit payroll number: (waiting for the user to enter a valid payroll number)
Enter Phone Number (02-12345678): 02-90807986 (user input)
(你的程序应该强制要求用户输入一个有效的员工号，你的程序应该能够验证用户输入的合法性
如果用户什么名字都没输入而直接按回车，则产生下面的页面）
No phone number entered – try again
Phone Number (02-12345678), (still waiting for the user to enter a valid phone number)
如果用户输入一个非法的电话号码，则产生下面的页面
Enter Phone Number (02-12345678): abc123 (user input)
Invalid phone number – try again
Enter Phone Number (02-12345678): (still waiting for the user to enter a valid phone number)
对合法电话号码的约束如下：有效的电话区号是02, 03, 04, 05, 06, 07, 08. 电话号码的首位(不包括区号)可以是 1 到 9 之间的任意数字， 后 7个数字可以是0 到 9 之间的任意数字。一个有效电话号码的例子是 02-95671600. 无效电话号码的例子是0363243416, 1099887766, 1299998877, 等.
Enter Last Name: Warren (user input)
(一个合法的名只能是字母和空格的组合，如果用户输入一个非法的名字，则提示“Last name can contain only alphabetical characters and spaces ”然后要求用户重新输入，如果用户什么名字都没输入而直接按回车，则提示No last name entered – try again 然后要求用户重新输入)
Enter First Name: Todd (user input)
(一个合法的姓只能是字母和空格的组合，如果用户输入一个非法的姓，则提示“First name can contain only alphabetical characters and spaces ”然后要求用户重新输入，如果用户什么名字都没输入而直接按回车，则提示No First name entered – try again 然后要求用户重新输入)
Enter Middle Init: L (user input)
(一个合法的职位只能是字母和空格的组合，如果用户输入一个非法的职位，则提示“Middle Init can contain only alphabetical characters and spaces ”然后要求用户重新输入，如果用户什么名字都没输入而直接按回车，则提示No Middle Init entered – try again 然后要求用户重新输入.)
Enter Dept #: 20 (user input)
(一个合法的部门号码只能是数字。如果用户输入一个非法的部门号码，则提示“ Dept # can contain only digits with no spaces”然后要求用户重新输入，如果用户什么名字都没输入而直接按回车，则提示No Dept # entered – try again 然后要求用户重新输入))
Enter Job Title: Engineer (user input)
(一个合法的职称只能是字母和空格的组合，如果用户输入一个非法的职位，则提示“Job title can contain only alphabetical characters and spaces ”然后要求用户重新输入，如果用户什么名字都没输入而直接按回车，则提示No Job title entered – try again 然后要求用户重新输入)
Enter Date Hired (dd-mm-yyyy): 21-02-1996 (user input)
（你的程序必须能够判断日期的有效性，比如 30-02-1998无疑就是一个错误的日期格式！
如果日期格式错误，则提示 Invalid Date Hired然后要求用户重新输入，如果用户什么名字都没输入而直接按回车，，则提示No date hired entered – try again然后要求用户重新输入)
Record Saved
（只有在上述信息都验证通过后，这个信息才会显示！接着再跳出提示，询问是否继续添加新记录.)
Add another employee record? (y)es or (n)o, y (user input)
如果用户敲入y,则重新跳出新增加页面，如果用户敲入n, 那么离开add.java返回到主菜单页面 以便用户做新的选择，如果用户不小心敲不是n或y的其它字符，也一样返回到主菜单。
,
(The main menu here)
Your Selection, 7 (user input)
(Clear the user screen first)
Adfaith Consulting – Employee Records:
======================================
Employee Record Deletion:
Enter employee’s 3 digit payroll number to enable file deletion: 869 (user input)
869:02-95671660:Jones:Sarah:B:45:sales manager:14-12-1995
(你的程序必须验证员工号的有效性，否则产生如下页面的提示)
如果用户什么都没输入而直接按回车，则生产如下页面的提示）
Enter employee 3 digit payroll number: (user simply presses the Enter key)
No payroll number entered – try again
Enter employee 3 digit payroll number: abc (user inputs invalid characters)
Payroll number can contain only numerical characters
Enter employee 3 digit payroll number: (waiting for the user to enter a valid payroll number)
Confirm record deletion, (y)es or (n)o, y (user input)
Record deleted. (只有在记录确实从records删除后才会出现该提示.)
)
Delete another? (y)es or (n)o, y (user input)
(如果用户输入的不是y，而是n或者其它字符都跳回主菜单页面))
如果按用户的输入找不到相关匹配的记录，则产生的页面如下列所示
Adfaith Consulting – Employee Records:
======================================
Employee Record Deletion:
Enter employee’s 3 digit payroll number to enable file deletion: 123 (user input)
Employee record for 123 not found!
Press Enter to continue …
(这时候光标应该能停在本行末，当用户输入enter后重新回到主菜单页面.)
