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

Explain the term naming packages in details, Explain the term Naming Packag...

Explain the term Naming Packages in details? As you saw previously name space conflicts arise if two pieces of code declare the similar name. Java remains track of what belongs

List the keywords which are used in java 1.1, List the keywords which are u...

List the keywords which are used in java 1.1? The list of keywords which are used in java 1.1 are given below: Keyword Purpose boole

Regex , Having trouble with a lab, need to

Having trouble with a lab, need to

Difference between hashmap and hash table, Difference between HashMap and H...

Difference between HashMap and Hash table HashMap: It allow us to have null values and also one null key It is Unsynchronized. Iterator in HashMap is Fail-Safe.

Create modeling tickets for a city subway system, For this assignment you'l...

For this assignment you'll create some classes for modeling tickets for a city subway system. The type of system we are modeling has these main features: Stations are grouped in

How to loading images in java, How to Loading Images in JAVA? Polygons,...

How to Loading Images in JAVA? Polygons, ovals, lines and text cover a lot of ground. The residual graphic object you need is an image. Images in Java are bitmapped GIF or JPEG

Debugging, Debugging mode can be enabled by adding the following line of co...

Debugging mode can be enabled by adding the following line of code before creating new connections: XMPPConnection.DEBUG_ENABLED = true; When debugging mode is enabled, a

Explain different advice types in spring, 1) Around : org.aopalliance.inter...

1) Around : org.aopalliance.intercept.MethodInterceptor 2) Before : org.springframework.aop.BeforeAdvice 3)  After : org.springframework.aop.AfterReturningAdvice 4) Throws

Program to change base system, Write a program called BaseConverter that pr...

Write a program called BaseConverter that prompts (asks) the user for a base 10 number and another number, between 2 and 10 inclusive. This second number is the base to which to co

What is difference between design and system architecture, What is differen...

What is difference between Design and System Architecture? System Architecture : It is structure of a product or procedure. Design: It is begin of the procedure of devel

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