Ask Question, Ask an Expert

+1-415-315-9853

info@mywordsolution.com

Ask Java Expert


Home >> Java

Through its implementation, this project will familiarize you with the creation and execution of threads, and with the use of the Thread class methods. In order to synchronize the threads you will have to use (when necessary), run( ), start( ), currentThread( ), getName( ), join( ), yield( ), sleep(time), isAlive( ), getPriority( ), setPriority( ), interrupt( ).

In synchronizing threads, do NOT use any semaphores, wait( ), notify( ) or notifyAll( ).

Triathlon

The triathlon competitors arrive at the stadium. There are three events that must be completed: running, bicycle riding and swimming. Once arrived, the competitors must wait (use busy waiting) for the race to start. The judge will announce the start of the race (use Boolean shared variable start) and mark the starting time in a database (for obtaining the time use the age( ) method). Each competitor runs for a random time between 20 and 40 units.

NOTE: starting with JDK 1.5 and up, operations on vectors are already synchronized, and executed in a Mutual Exclusion fashion. After a competitor completes the run, the time must be registered in the database (don’t need to have a real database but you need to save the necessary information). Between the events, each competitor is allowed to take a break of a random time of up to 10 units. Generate a rest period between 1 and 13 units (use sleep(randomTime)). If a competitor exceeds the allowed time, he will be disqualified. The next course is the bicycle event. All of the bicycles are stored at the starting location. Each competitor will wait (using busy waiting) for a bicycle to be available for pick up. The judge will instruct the competitors in a FCFS order to pick up their bikes. Preparing the bicycle takes some time. The competitor wants to prepare the bicycle as fast as he can. For five units of time only the competitor will increase its priority by 2 (use getPriority( ), setPriority( )). When ready to start the race, each competitor will log the starting time and bicycle for a random time between 30 and 45 units. When the competitor gets to the finish line, he will log the finish time in the database.

A new rest break will be allowed (implement it using the yield( ) method). The last course is the swimming event. It starts once the competitors finish the rest break following the run. There are numLanes available. Competitors will have to form up into groups of size equal to numLanes. When a group is ready, the race can start. The starting time must be registered in the database. Each involved competitor will swim for a random time between 10 and 15 units. Once the competitor finishes the race, he will register the time in the database.

Note: don’t worry about the possibility at some point of having two sets of swimmers in the swimming pool at the same time. Consider that each group uses a different swimming pool.

The competitors must wait until the judge announces the prizes (simulate wait using sleep of a long time - like 500 units, longer that the time it takes the judge to do the all computations). The last competitor to finish the race must inform the judge that the race is over before going to sleep. Use a counter to keep track of the number of competitors that have finished. The judge will resume all the competitors (by interrupting them from sleep – use interrupt( )) when done with the computations, and will announce the first prize for each event and the grand prize for the race. The competitors will leave one by one, in the order of their ID(use isAlive( ) and join( )). In your implementation you should also make use of the currentThread( ) and getName( ) methods.

Using Java programming, synchronize the two types of threads, judge, competitors, in the context of the problem. Closely follow the implementation requirements.

The number of competitors, numComp, numLanes should be read as command line arguments, e.g. –c -l .

Default values: numComp = 20

numLanes = 4

Use appropriate System.out.println( ) statements and the age( ) method to reflect the time of each particular action done by a specific thread. This is necessary for us to observe how the synchronization is working.

Note: a good value for 1 unit of time might be: 100ms

• Add the following lines to all the threads you make:

public static long time = System.currentTimeMillis();

public void msg(String m) {

System.out.println("["+(System.currentTimeMillis()-time)+"] "+getName()+": "+m);

}

Whenever you want to print something from that thread do: msg("some message here");

• NAME YOUR THREADS or the above lines that were added would mean nothing. Here's how the constructors should look like (you may use any variant of this as long as each thread is unique and distinguishable):

// Default constructor

public RandomThread(int id) {

setName("RandomThread-" + id);

}

Java, Programming

  • Category:- Java
  • Reference No.:- M9663

Have any Question? 


Related Questions in Java

Casegreentek is a software solution company for smartphone

Case Greentek is a software solution company for smartphone and tablet devices. Current headquarter (HQ) locates in Sydney, 30 sale team members and 50 software engineers base in Singapore and Manila respective. The cycl ...

Java programming using ide netbeansdetailed question must

Java programming using IDE NetBeans Detailed Question: Must use file operations, exception handling, recursive programming (to calculate averages), and encapsulation (or inheritance) in the program Must have four java fi ...

Create a separate class for the selected product that holds

Create a separate class for the selected product that holds the item number, the name of the product, the department in which the product belongs, the number of units in stock, and the price of each unit. You must use th ...

Assignmentyou have to doone of the following1modify your

Assignment You have to doONE of the following: 1. Modify your Registration project(s) to use a Hash Table to maintain the student information instead of the sorted array or BST. Your hash function should be based on the ...

Write a java application using netbeans integrated

Write a Java application using NetBeans Integrated Development Environment (IDE) that calculates the total annual compensation of a salesperson. Consider the following factors: A salesperson will earn a fixed salary of 8 ...

When programming or solving any sort of problem for that

When programming, or solving any sort of problem for that matter, abstraction plays a key role in the decision-making process. It allows you to remove irrelevant details in order to understand the bigger picture. For exa ...

Assignment 1overviewthis is an individual assignment that

Assignment 1 Overview This is an individual assignment that requires you to design, develop and test a small procedural Java program. Timelines and Expectations Learning Outcomes Assessed The following course learning ou ...

Assignmentexercise1write a java class that asks the user to

Assignment Exercise#1: Write a java class that asks the user to enter three numbers N1, N2, N3 , obtains the numbers, then calculates and displays the largest number Max followed by the text "is the largest" and the smal ...

Write a java application using netbeans integrated

Write a Java application using NetBeans Integrated Development Environment (IDE) that calculates the total annual compensation of a salesperson. Consider the following factors: • A salesperson will earn a fixed salary of ...

Exam program create a class for working with mixed

Exam Program: Create a class for working with mixed fractions. Only 3 private data members are needed: the int whole number part of the fraction, the int numerator of the fraction, and the positive int denominator of the ...

  • 4,153,160 Questions Asked
  • 13,132 Experts
  • 2,558,936 Questions Answered

Ask Experts for help!!

Looking for Assignment Help?

Start excelling in your Courses, Get help with Assignment

Write us your full requirement for evaluation and you will receive response within 20 minutes turnaround time.

Ask Now Help with Problems, Get a Best Answer

Section onea in an atwood machine suppose two objects of

SECTION ONE (a) In an Atwood Machine, suppose two objects of unequal mass are hung vertically over a frictionless

Part 1you work in hr for a company that operates a factory

Part 1: You work in HR for a company that operates a factory manufacturing fiberglass. There are several hundred empl

Details on advanced accounting paperthis paper is intended

DETAILS ON ADVANCED ACCOUNTING PAPER This paper is intended for students to apply the theoretical knowledge around ac

Create a provider database and related reports and queries

Create a provider database and related reports and queries to capture contact information for potential PC component pro

Describe what you learned about the impact of economic

Describe what you learned about the impact of economic, social, and demographic trends affecting the US labor environmen