For user input 1, numbers are read from a file. A filename should be provided at the beginning of simulation. Each line in a datafile should contain two positive numbers (> 0). A datafile should contain sufficient data for simulationTime. In each time unit, anyNewArrival & transactionTime are computed in getCustomerData() as follows :

read data1 and data2 from the file; anyNewArrival = (((data1%100)+1)<= chancesOfArrival); transactionTime = (data2%maxTransactionTime)+1;

For user input 0, numbers are generated by method nextInt() in a Random object, dataRandom, which should be constructed at the beginning of simulation. In each time unit, anyNewArrival & transactionTime are computed in getCustomerData() as follows :

anyNewArrival = ((dataRandom.nextInt(100)+1) <= chancesOfArrival); transactionTime = dataRandom.nextInt(maxTransactionTime)+1;

package PJ3;

import java.util.*; import java.io.*;

// You may add new functions or data in this class // You may modify any functions or data members here // You must use Customer, Teller and ServiceArea classes // to implement Bank simulator

class BankSimulator {

// input parameters private int numTellers, customerQLimit; private int simulationTime, dataSource; private int chancesOfArrival, maxTransactionTime;

// statistical data private int numGoaway, numServed, totalWaitingTime;

// internal data private int customerIDCounter; // customer ID counter private ServiceArea servicearea; // service area object private Scanner dataFile; // get customer data from file private Random dataRandom; // get customer data using random function

// most recent customer arrival info, see getCustomerData() private boolean anyNewArrival; private int transactionTime;

// initialize data fields private BankSimulator() { // add statements }

private void setupParameters() { // read input parameters // setup dataFile or dataRandom // add statements }

// Refer to step 1 in doSimulation() private void getCustomerData() { // get next customer data : from file or random number generator // set anyNewArrival and transactionTime // see Readme file for more info // add statements }

private void doSimulation() { // add statements

// Initialize ServiceArea

// Time driver simulation loop for (int currentTime = 0; currentTime < simulationTime; currentTime++) {

// Step 1: any new customer enters the bank? getCustomerData();

if (anyNewArrival) {

// Step 1.1: setup customer data // Step 1.2: check customer waiting queue too long? // if it is too long, update numGoaway // else enter customer queue } else { System.out.println("\tNo new customer!"); }

// Step 2: free busy tellers that are done at currentTime, add to free cashierQ // Step 3: get free tellers to serve waiting customers at currentTime } // end simulation loop

// clean-up - close scanner }

private void printStatistics() { // add statements into this method! // print out simulation results // see the given example in project statement // you need to display all free and busy gas pumps

// need to free up all customers in queue to get extra waiting time. // need to free up all tellers in free/busy queues to get extra free & busy time. }

// *** main method to run simulation ****

public static void main(String[] args) { BankSimulator runBankSimulator=new BankSimulator(); runBankSimulator.setupParameters(); runBankSimulator.doSimulation(); runBankSimulator.printStatistics(); }

}