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

Concurrent Programming, Problem 1 A savings account object holds a non-nega...

Problem 1 A savings account object holds a non-negative balance, and provides deposit(k ) and withdraw(k ) methods, where deposit(k ) adds k to the balance, and withdraw(k ) subtra

Write code in javascript to display the odd numbers, Write code in JavaScri...

Write code in JavaScript to display the odd numbers among 20 to 100 using FOR statement? Note: No required to write whole HTML program. Just JavaScript code of require elemen

Interfaces and generics, In this assignment, you are provided with an inter...

In this assignment, you are provided with an interface that contains a generic type. You are asked to create two classes that implement this interface. A. The Sequenced Interfac

String, in java string is a

in java string is a

What is a local member and a class variable, What is a local, member and a ...

What is a local, member and a class variable? Variables declared within a method are "local" variables. Variables declared within the class i.e not within any methods are "m

What is java bytecode, What is java Bytecode Java programs (Source code...

What is java Bytecode Java programs (Source code) are compiled into a form known as Java bytecodes. Java compiler reads Java language source (.java) files, translates source

Convert US Dollars to Canadian Dollars, How to write a program that convert...

How to write a program that converts US dollars into Canadian dollars.The program let the user enter an amount in US dollars and display it equivalent value in Canadian dollars whe

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