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

State how many arguments were passed using length property, Determine how m...

Determine how many arguments were passed using length property In java, array knows their size by using the length property. By using, length property we can determine how many

Program that receives two integer inputs from a user, Question 4 Write ...

Question 4 Write a program that receives two integer inputs from a user, an ending value, lastvalue and column, column. The program will display all numbers from 1 to lastvalue

Explain javamail, Normal 0 false false false EN-IN X-...

Normal 0 false false false EN-IN X-NONE X-NONE MicrosoftInternetExplorer4

How jms is different from rpc, In RPC the method invoker waits for the meth...

In RPC the method invoker waits for the method to finish implementation and return the control back to the invoker. Therefore it is completely synchronous in nature. Whereas in JMS

Polymoethism, write a java program to test for class Person Student facult...

write a java program to test for class Person Student faculty Employee

Why you don''t need to import java.lang.*, Why You don't need to import jav...

Why You don't need to import java.lang.* There is one exception to the import rule. All classes in the java.lang package are imported by default. Therefore you do not required

Programing, A servey is done in M.P. by forest department finding different...

A servey is done in M.P. by forest department finding different types of species of birds the servey data covered four major cities indore,Bhopal,Gwalior,vidhisa. The result they o

What is the purpose to use the enableevents method, What is the purpose to ...

What is the purpose to use the enableEvents() method?

When should i use abstract classes and interfaces, When should I use abstra...

When should I use abstract classes and when should I use interfaces?  Use Interface, when: Design changing often or when various implementations only share method sign

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