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

Spring MVC Controllers, I want to upload an item object with it''s image is...

I want to upload an item object with it''s image is it possible that i pass a complete object of my Item along with it''s image from my Controller if yes then how may i Do it? an

Explain what is constructors, Explain what is constructors ? It is freq...

Explain what is constructors ? It is frequent the case in which overloaded techniques are essentially the similar except that one supplies default values for a few of the argum

Pebbles merchant, There is a pebble merchant. He sells the pebbles, that ar...

There is a pebble merchant. He sells the pebbles, that are used for shining the floor. His main duty is to take the length of the room’s sides. But he sometimes mistakes doing that

Using polymorphism to write a program to display digital clo, using polymor...

using polymorphism to write a program to display digital clock

I want to develop a chat application for j2me, I want to develop a Chat app...

I want to develop a Chat application for j2me Project Description: We require a chat application for a community website. Skills required: Java, J2ME

Banking database system - java database connectivity, JDBC Assignment B...

JDBC Assignment Banking Database System:  BankCustomer CUST_ID  CUST_NAME ADDRESS ACC_TYPE CUST_ID

Explain arithmetic promotion and binary operations, Explain Arithmetic Prom...

Explain Arithmetic Promotion and Binary Operations? An int divided through an int is an int, and a double divided by a double is a double, but what about an int divided by a do

Exception handling in EJB, Java has two kinds of exceptions: 1. Checked ...

Java has two kinds of exceptions: 1. Checked exception: handled from java.lang.Exception but not java.lang.RuntimeException. 2. Unchecked exception: handled from java.lang.Ru

Create an applet for grid layout, Take the Student Choice GUI you created i...

Take the Student Choice GUI you created in Assignment and convert it to an applet.  Because standalone GUI applications and applets are so similar, a lot of the code should be reus

Programming Project, Design and implement a class called Sphere that contai...

Design and implement a class called Sphere that contains instance data that represents the sphere''s diameter, and include getter and setter methods for the diameter. Include metho

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