Program: File name: “ DrugTests2.java ” //Define a class named DrugTests2 public class DrugTests2 { //Define a main method public static void main(String[] args) { //Declare the variables and initialize the values int testedEmployee; int week; final int WEEKS = 52; final int EMPLOYEES = 30; int[] counts = new int[EMPLOYEES]; int countNeverTested = 0; int x; /For loop to be executed until a list of randomly selected employees who will be tested each week for the next 52 weeks/ for(week = 1; week <= WEEKS; ++week) { //Calculate the number of times each employee is selected testedEmployee = 1 + (int) (Math.random() * EMPLOYEES); //Print the result System.out.print("week " + week + " Emp # " + testedEmployee + " "); //If remainder of week % 4 equals 0 if(week % 4 == 0) //Print the result System.out.println(); //Increment counts counts[testedEmployee - 1]++; } //For loop to be executed until x exceeds 30 for(x = 0; x < EMPLOYEES; ++x) { //Print the result System...

Question

Please answer JAVA OOP problem below: Assume you have three data definition classes, Person, Student and Faculty. The Student and Faculty classes extend Person. Given the code snippet below, in Java, complete the method determinePersonTypeCount to print out how many Student and Faculty objects exist within the Person array. You may assume that each object within the Person[] is either referencing a Student or Faculty object. public static void determinePersonTypeCount(Person[] people){ // Place your code here }

Answer 1

Expert Solution & Answer

Chapter 8, Problem 12PE

a.

Explanation of Solution

Program:

File name: “DrugTests2.java”

//Define a class named DrugTests2

public class DrugTests2

{

    //Define a main method

    public static void main(String[] args)

    {

        //Declare the variables and initialize the values

        int testedEmployee;

        int week;

        final int WEEKS = 52;

        final int EMPLOYEES = 30;

        int[] counts = new int[EMPLOYEES];

        int countNeverTested = 0;

        int x;

        /For loop to be executed until a list of randomly

        selected employees who will be tested each

        week for the next 52 weeks/

        for(week = 1; week <= WEEKS; ++week)

        {

            //Calculate the number of times each employee is selected

            testedEmployee = 1 + (int) (Math.random() * EMPLOYEES);

            //Print the result

            System.out.print("week " + week + " Emp # " +

            testedEmployee + "      ");

            //If remainder of week % 4 equals 0

            if(week % 4 == 0)

                //Print the result

                System.out.println();

                //Increment counts

                counts[testedEmployee - 1]++;

        }

        //For loop to be executed until x exceeds 30

        for(x = 0; x < EMPLOYEES; ++x)

        {

            //Print the result

System...

b.

Explanation of Solution

Program:

File name: “DrugTests3.java”

//Define a class named DrugTests3

public class DrugTests3

{

    //Define a main method

    public static void main(String[] args)

    {

        //Declare the variables and initialize the values

        int testedEmployee;

        int week;

        final int WEEKS = 52;

        final int EMPLOYEES = 30;

        int[] counts = new int[EMPLOYEES];

        int countNeverTested = 0;

        int x;

        int previousEmployee = -1;

        /For loop to be executed until a list of randomly

        selected employees who will be tested each

        week for the next 52 weeks/

        for(week = 1; week <= WEEKS; ++week)

        {

/Calculate the number of times each employee is selected/

testedEmployee = 1 + (int) (Math.random() * EMPLOYEES);

            /If an employee number is selected

            immediately after it was already selected/

            if(testedEmployee == previousEmployee)

            {

                //Decrement week

                week--;

                //Print the result

                System.out.println("Employee #" + testedEmployee + " was selected two weeks in a row -- making new selection");

            }

            //Else

            else

            {

                //Print the result

                System.out.print("week " + week + " Emp # " +

                testedEmployee + "      ");

                //If remainder of week % 4 equals 0

                if(week % 4 == 0)

                    //Print the result

                    System...

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