Contact Class RequirementsThe contact object shall have a required unique contact ID string that cannot be longer than 10 characters. The contact ID shall not be null and shall not be updatable.The contact object shall have a required firstName String field that cannot be longer than 10 characters. The firstName field shall not be null.The contact object shall have a required lastName String field that cannot be longer than 10 characters. The lastName field shall not be null.The contact object shall have a required phone String field that must be exactly 10 digits. The phone field shall not be null.The contact object shall have a required address field that must be no longer than 30 characters. The address field shall not be null.Contact Service RequirementsThe contact service shall be able to add contacts with a unique ID.The contact service shall be able to delete contacts per contact ID.The contact service shall be able to update contact fields per contact ID. The following fields are updatable:firstNamelastNameNumberAddressONLY NEED HELP ON CONTACTSERVICE CLASS and JUNIT TEST CASE

The code for the ContactService class is written below: // importing packages import…

Answered: Contact Class Requirements The contact…

7th Edition

ISBN:9780133594140

Author:James Kurose, Keith Ross

Publisher:James Kurose, Keith Ross

Chapter1: Computer Networks And The Internet

Section: Chapter Questions

Problem R1RQ: What is the difference between a host and an end system? List several different types of end...

The contact object shall have a required unique contact ID string that cannot be longer than 10 characters. The contact ID shall not be null and shall not be updatable.
The contact object shall have a required firstName String field that cannot be longer than 10 characters. The firstName field shall not be null.
The contact object shall have a required lastName String field that cannot be longer than 10 characters. The lastName field shall not be null.
The contact object shall have a required phone String field that must be exactly 10 digits. The phone field shall not be null.
The contact object shall have a required address field that must be no longer than 30 characters. The address field shall not be null.

The contact service shall be able to add contacts with a unique ID.
The contact service shall be able to delete contacts per contact ID.
The contact service shall be able to update contact fields per contact ID. The following fields are updatable:
- firstName
- lastName
- Number
- Address

ONLY NEED HELP ON CONTACTSERVICE CLASS and JUNIT TEST CASE

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