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

#, Consider the following code? What input is needed for x in order for the...

Consider the following code? What input is needed for x in order for the sum variable that is output at the end of the code to be 12 ? (In other words: what do I need to make X be

Developing a prototype system in php and javascript, General Overview A...

General Overview A number of organisations are using micro-blogging as a cost-effective way of communicating with customers, building online communities and releasing informati

What is JMS queue, Staging areas that have messages those have been sent an...

Staging areas that have messages those have been sent and are waiting to be read. Note that, contrary to what the name queue suggests, messages don't have to be delivered in the or

Explain the term- strings, Explain the term- Strings A string is genera...

Explain the term- Strings A string is generally considered to be a sequence of characters stored in memory and accessible as a unit. Strings in java are signified as objects

Complete back end and front end development, Complete Back end and Front En...

Complete Back end and Front End Development Project Description: This work is a part of ongoing project. The need is to prepare and integrate the web part of this project.

Java application - gui and backend projects, JNLP/ Java Application - GUI a...

JNLP/ Java Application - GUI and Backend Projects Project Description: I am looking for assist in making changes to a complex java application. System launches from web pa

the file system simulator , • Study and enhance the File System Simulator ...

• Study and enhance the File System Simulator - See the FS_sim slide deck • New features - blockinfo - a new application that displays the information about the blocks in the file

Palindrome, palindrome is starting that reads both the ends.using string co...

palindrome is starting that reads both the ends.using string covert into character

What is the parent class for all swing components? , Design pattern : As y...

Design pattern : As you may look from the diagram given below, containers collect components. Sometimes you want to accumulate a container to another container. So, a container co

Difference between boolean & operator and && operator, How can we define th...

How can we define the difference between the Boolean & operator and the && operator ?

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