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

Need remote synchronization tool for folders and files, Need Remote Synchro...

Need Remote Synchronization tool for folders and files? Project Description:                 We want a tool to synchronize the content of one or more folders on the file syst

Instance variables and arrays, For an assignment I need to write an array p...

For an assignment I need to write an array program to go along with an instance variable. I keep getting the no main class error when I run my program.

I clicker, i am to find 75% of i clicker score.Each correct answer is worth...

i am to find 75% of i clicker score.Each correct answer is worth 2points and an incorrect 1point. Express grade as a percentage (i.e the max is 100%). e.g 1 no i clicker question

Describe life cycle of thread, Describe life cycle of thread. Threads f...

Describe life cycle of thread. Threads follow the single flow of control. A thread is execution in a program. The life cycles of threads are listed below: Newborn state: A

Design patterns, what is the use of design pattern in java ?

what is the use of design pattern in java ?

Websphere - weblogic, WebSphere - Weblogic and Apache: Building/Ins...

WebSphere - Weblogic and Apache: Building/Installation  and maintenance of Solaris and Linux machines. Exposure to Sun Hardware : Sunfire v880,v890.V440,X4600

Difference b/w software platform and java platform, Java platform is a soft...

Java platform is a software-only platform independent, which runs on top of other hardware-based platforms like WINDOWS, UNIX, NT etc.   The Java platform has 2 main com

What is testing for equality in java, What is Testing for Equality in java?...

What is Testing for Equality in java? Testing for equality is a little trickier. You would expect to test if two numbers are equal through using the = sign. However the = sign

What are the layers of rmi architecture, There are three layers:-  a . S...

There are three layers:-  a . Stub and Skeleton layer This layer lies just under the view of the developer. This layer intercepts method calls made by the client to the inte

State the java programmer efficiency, State the Java Programmer Efficiency ...

State the Java Programmer Efficiency Faster Development Building an application in Java takes about 50% less time than in C or C++. So, faster time to market Java is said to

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