Modify user profile class, JAVA Programming

Assignment Help:

Modify your UserProfile class to meet the following requirements:

  1. It must include a field called wall to store an ArrayList of wall posting objects. It must also provide a getter called getWall() that returns the ArrayList of wall posting objects. The list should initially be empty for a newly created UserProfile.
  2. It must provide a method called postToWall() that takes two parameters: the author of the posting (a user profile, not a string) and a string message. This method should add a new wall posting with the given contents.

Note that wall postings should be stored in reverse-chronological order, meaning that newly created posts should be stored at the beginning of the list, not at the end. Also, this method should ensure that the total number of posts does not exceed 20. Once the wall gets that full, delete the oldest post to make room for a new one. Study the API documentation for ArrayList to find suitable methods to accomplish this arrangement. You may assume that the clock is consistent, that is, postings created more recently will also have a more recent time stamp.


Related Discussions:- Modify user profile class

Gen keys, Write a Java class that generates a random integer (between 1 and...

Write a Java class that generates a random integer (between 1 and 250). Call the class GenKeys. GenKeys should have a least one method that returns the integer random number. Gen K

PROBLEM 2, #The objective is to implement a menu-based system for Bank Acco...

#The objective is to implement a menu-based system for Bank Accounts in order to simulate a very simple banking system. Many structures have to be declared to manage bank accounts.

Program, a program that groups items according to their number

a program that groups items according to their number

Explain the essential api concepts associated with j2me, Question : (a)...

Question : (a) Class file verification in CLDC is different from class file verification in J2SE. Explain and discuss how and why it is different, illustrating your answer

What is difference between design and system architecture, What is differen...

What is difference between Design and System Architecture? System Architecture : It is structure of a product or procedure. Design: It is begin of the procedure of devel

Array prints random numbers into string, Prompt the user for an int between...

Prompt the user for an int between an upper and lower boundary. Reuse the validateInput() method from project 2 to validate if the input is in bounds. If it is not, print an error

Javacard, I want to know if you can help me with a javacard programming pro...

I want to know if you can help me with a javacard programming project

Relation between stack and heap, Relation between Stack and Heap Stack ...

Relation between Stack and Heap Stack and heap are two significant memory areas. Primitives are created on the stack whereas objects are created on heap. This will be further c

Nelson-siegel parametric class of term structures, Since there are only a f...

Since there are only a finite number of bonds available in the market. There will always be "holes" to fill in when defining a yield curve in continuous time. A common approach is

How we declaring arrays in java language, How we Declaring Arrays in java l...

How we Declaring Arrays in java language? Like all other variables in Java, an array must have a exact type such as byte, int, String or double. Just variables of the appropria

Write Your Message!

Captcha
Free Assignment Quote

Assured A++ Grade

Get guaranteed satisfaction & time on delivery in every assignment order you paid with us! We ensure premium quality solution document along with free turntin report!

All rights reserved! Copyrights ©2019-2020 ExpertsMind IT Educational Pvt Ltd