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Person Class
package assignment7;
/** Alex Rockelli 108942222 CIS 331 Section 4
* This work is done in compliance with the JMU Honor Code
* @author Alex
*/
public class Person implements Cloneable {
// instance member varialbes
private String firstName;
private String lastName;
private int age;
private String mStatus;
private String gender;
// static class member variables
protected static int totPeople = 0;
protected static final int MAXPEOPLE = 5;
protected static Person[] people = new Person[MAXPEOPLE];
public Person() {
firstName = "FIRST";
lastName = "LAST";
age = 0;
mStatus = "unknown";
gender = "unknown";
}
public Person(String a, String b, String c, int d, String e) {
setFirstName(a);
setLastName(b);
setGender(c);
setAge(d);
setMStatus(e);
}
// instance methods
public String personInfo(boolean fullData) {
String data = toString() + " ";
if (!fullData)
data += "Name: " + firstName + "\nLast name: " + lastName;
else
data += "Name: " + firstName + " " + lastName +
"\nAge: " + age + "\nGender: " + gender +
"\nMarital Status: " + mStatus;
return data;
}
public boolean equals(String test) {
String compare = firstName + " " + lastName;
return compare.equalsIgnoreCase(test);
}
public String getFirstName() {
return firstName;
}
public void setFirstName(String x) {
// change first name to...
String capLetter = x.substring(0, 1);
String rest = x.substring(1, x.length());
firstName = capLetter.toUpperCase() + rest.toLowerCase();
}
public String getLastName() {
return lastName;
}
public void setLastName(String x) {
// change last name to...
String capLetter = x.substring(0, 1);
String rest = x.substring(1, x.length());
lastName = capLetter.toUpperCase() + rest.toLowerCase();
}
public String getGender() {
return gender;
}
public void setGender(String x) {
// change gender to...
if (x.equalsIgnoreCase("male"))
gender = x;
else if (x.equalsIgnoreCase("female"))
gender = x;
else
gender = "Unknown";
}
public int getAge() {
return age;
}
public void setAge(int x) {
// change age to...
if (x < 0)
age = 0;
else
age = x;
}
public String getMStatus() {
return mStatus;
}
public void setMStatus(String x) {
// change marital status to...
if (x.equalsIgnoreCase("married"))
mStatus = x;
else if (x.equalsIgnoreCase("divorced"))
mStatus = x;
else if (x.equalsIgnoreCase("widowed"))
mStatus = x;
else if (x.equalsIgnoreCase("single"))
mStatus = x;
else
mStatus = "unknown";
}
@Override
public Object clone() {
try {
return super.clone();
}
catch (CloneNotSupportedException ex) {
System.out.print("Sorry, " + ex.toString());
return null;
}
}
@Override
public String toString() {
return "Person";
}
// static class methods
public static String listPersons(Person[] x) {
String namesList = "";
for (int i = 0; i < totPeople; i++) {
if (people[i].firstName != null && people[i].lastName != null)
namesList += people[i].toString() + " " +
people[i].firstName + " " + people[i].lastName + "\n";
}
if (namesList.equals(""))
namesList = "No people have been added yet!\n";
return namesList;
}
public static int findPerson(String name) {
int found = -1;
for (int i = 0; i < totPeople; i++) {
if (people[i].equals(name))
found = i;
}
return found;
}
public static boolean addPerson(String a, String b, String c, int d, String e) {
for (int i = 0; i < MAXPEOPLE; i++) {
if (people[i] == null){
people[i] = new Person(a, b, c, d, e);
totPeople++;
return true;
}
}
return false;
}
public static double averageAge(Person[] x) {
double averageAge = 0;
for (int i = 0; i < totPeople; i++) {
averageAge += x[i].age;
}
averageAge /= totPeople;
return averageAge;
}
public static Person getPerson(int x) {
return people[x];
}
public static Person[] getPeople() {
return Person.people;
}
}
Student Class
package assignment7;
/**Alex Rockelli 108942222 CIS 331 Section 4
* This work is done in compliance with the JMU Honor Code
*
* @author Alex
*/
public class Student extends Person{
// instance member variables
private String major;
private String classStanding;
private double gpa;
private Faculty advisor;
// default constructor
public Student() {
super();
setClassStanding("freshman");
setMajor("undeclared");
setGPA(0.0);
}
// overloaded constructor
public Student(String a, String b, String c, int d, String e, String f, String g, double h) {
super(a, b, c, d, e);
setMajor(f);
setClassStanding(g);
setGPA(h);
}
public String getMajor() {
return major;
}
public void setMajor(String x) {
if (x.equalsIgnoreCase("cis"))
major = "CIS";
else if (x.equalsIgnoreCase("marketing"))
major = x;
else if (x.equalsIgnoreCase("management"))
major = x;
else if (x.equalsIgnoreCase("finance"))
major = x;
else if (x.equalsIgnoreCase("accounting"))
major = x;
else
major = "undeclared";
}
public String getClassStanding() {
return classStanding;
}
public void setClassStanding(String x) {
if (x.equalsIgnoreCase("senior"))
classStanding = x.substring(0,1).toUpperCase() + x.substring(1).toLowerCase();
else if (x.equalsIgnoreCase("junior"))
classStanding = x.substring(0,1).toUpperCase() + x.substring(1).toLowerCase();
else if (x.equalsIgnoreCase("sophomore"))
classStanding = x.substring(0,1).toUpperCase() + x.substring(1).toLowerCase();
else
classStanding = "Freshman";
}
public double getGPA() {
return gpa;
}
public void setGPA(double test) {
if ((test > 0.0) && (test <= 4.0))
gpa = test;
else
gpa = 0.0;
}
public Faculty getAdvisor() {
return advisor;
}
public void setAdvisor(Faculty x) {
advisor = x;
}
@Override
public String personInfo(boolean fullData) {
String data = "";
data += super.personInfo(fullData);
if (fullData)
if (advisor != null)
data += "\nMajor: " + major + "\nClass Standing: " + classStanding +
"\nGPA: " + gpa + "\nAdvisor: " + advisor.toString() + " "
+ advisor.getFirstName() + " " + advisor.getLastName();
else
data += "\nMajor: " + major + "\nClass Standing: " + classStanding +
"\nGPA: " + gpa + "\nAdvisor: no advisor assigned";
return data;
}
@Override
public String toString() {
return "Student";
}
// static class methods
public static String showOverallGPA(Person[] x) {
// pay close attention to this method
// requires type casting to Student object
int numStudents = 0;
double totGPA = 0;
String overall = "";
for (int i = 0; i < totPeople; i++) {
if (Person.people[i] instanceof Student) {
totGPA += (((Student)people[i]).getGPA());
numStudents++;
}
}
totGPA /= numStudents;
if (numStudents !=1)
overall = "There are " + numStudents + " students and the overall average GPA is "
+ totGPA + "\n";
else
overall = "There is " + numStudents + " student and the overall average GPA is "
+ totGPA + "\n";
return overall;
}
public static boolean addStudent(String a, String b, String c, int d, String e, String f, String g, double h) {
for (int i = 0; i < Person.MAXPEOPLE; i++) {
if (Person.people[i] == null){
Person.people[i] = new Student(a, b, c, d, e, f, g, h);
Person.totPeople++;
return true;
}
}
return false;
}
}
Faculty Class
package assignment7;
/**Alex Rockelli 108942222 CIS 331 Section 4
* This work is done in compliance with the JMU Honor Code
*
* @author Alex
*/
public class Faculty extends Person{
//instance member variables
private String professorType;
public Faculty() {
super();
setProfessorType("lecturer");
}
public Faculty(String a, String b, int c, String d, String e, String f) {
super(a, b, d, c, e);
setProfessorType(f);
}
public String getProfessorType() {
return professorType;
}
public void setProfessorType(String x) {
if (x.equalsIgnoreCase("assistant"))
professorType = x;
else if (x.equalsIgnoreCase("associate"))
professorType = x;
else if (x.equalsIgnoreCase("full"))
professorType = x;
else
professorType = "lecturer";
}
@Override
public String toString() {
return "Faculty";
}
@Override
public String personInfo(boolean fullData) {
String data = "";
data += super.personInfo(fullData);
if (fullData)
data += "\nProfessor Type: " + professorType;
return data;
}
// static class method
public static boolean addFaculty(String a, String b, String c, int d, String e, String f) {
for (int i = 0; i < Person.MAXPEOPLE; i++) {
if (Person.people[i] == null){
Person.people[i] = new Faculty(a, b, d, c, e, f);
Person.totPeople++;
return true;
}
}
return false;
}
}
Application Class
package assignment7;
import java.util.*;
/**Alex Rockelli 108942222 CIS 331 Section 4
* This work is done in compliance with the JMU Honor Code
*
* @author Alex
*/
public class PeopleApplication {
public static void main(String[] args) {
// welcome message
System.out.println("Welcome to People Application\n");
// try catch for error handling
try {
// int for switch case
int option;
// start with a loop for continuation
do {
Scanner value = new Scanner(System.in);
// show the menu
option = menuChoice();
// switch case for option value
switch (option) {
case 1: // addPerson
option1();
break;
case 2: // addStudent
option2();
break;
case 3: // addFaculty
option3();
break;
case 4: // listPersons
option4();
break;
case 5: // findPerson
System.out.println("Enter the first and last name of the person to search for");
String search = value.nextLine();
int num = Person.findPerson(search);
if (num != -1) {
System.out.println("Person Information");
System.out.println(Person.getPerson(num).personInfo(true));
System.out.println();
} else {
System.out.println("Person not found\n");
}
break;
case 6: //averageAge
System.out.println("Average age is: " + Person.averageAge(Person.getPeople()));
System.out.println();
break;
case 7: // showOverallGPA
System.out.println(Student.showOverallGPA(Person.people));
break;
case 8: // assign Advisor
assignAdvisor();
break;
case 9: // quit
System.out.println("Goodbye!");
System.exit(0);
break;
}
} while (option != 9);
} catch (InputMismatchException | NullPointerException | ArrayIndexOutOfBoundsException ex) {
// error message if exception caught interacting with program
System.out.println("\nSorry, " + ex.toString());
System.out.println("Run me again please!");
}
}
// method for displaying menu
public static int menuChoice() {
// boolean for menu loop continuation
boolean keepGoing = true;
// int for user choice
int choice = 0;
while (keepGoing) {
// menu output
System.out.println("Choices are:");
System.out.println("(1) Add a new person");
System.out.println("(2) Add a new student");
System.out.println("(3) Add a new faculty");
System.out.println("(4) List the people");
System.out.println("(5) Display information about a person");
System.out.println("(6) Display average age of people");
System.out.println("(7) Display average gpa of students");
System.out.println("(8) Assign an advisor to a student");
System.out.println("(9) Quit");
System.out.println("\nWhat is your choice?");
// scanner for user choice
Scanner input = new Scanner(System.in);
// try catch block for menu choice and input error handling
try {
choice = input.nextInt();
if (choice > 9 || choice < 1) {
System.out.println("***Invalid choice, please try again\n");
} else {
keepGoing = false;
}
return choice;
} catch (InputMismatchException ex) {
// error message for menu choice input
System.out.println("***Invalid choice, please try again\n");
input.nextLine();
}
}
return choice;
}
// option 1 method addPerson
public static void option1() {
Scanner value = new Scanner(System.in);
System.out.println("Enter the first and last name of the person");
String first = value.next();
String last = value.next();
// while loop and try catch for correct age numeric input
boolean keepGoing = true;
int age = 0;
while (keepGoing) {
try {
System.out.println("Enter the person's age");
age = value.nextInt();
keepGoing = false;
} catch (InputMismatchException ex) {
System.out.println("***Invalid input, enter a number\n");
value.nextLine();
}
}
System.out.println("Enter the person's marital status");
String status = value.next();
System.out.println("Enter the person's gender");
String gender = value.next();
if (Person.addPerson(first, last, gender, age, status)) {
System.out.println("Person Added\n");
} else {
System.out.println("Insufficient space to add person\n");
}
}
// option 2 method addStudent
public static void option2() {
Scanner value = new Scanner(System.in);
System.out.println("Enter the first and last name of the person");
String first = value.next();
String last = value.next();
// while loop and try catch for correct age numeric input
boolean keepGoing = true;
int age = 0;
while (keepGoing) {
try {
System.out.println("Enter the person's age");
age = value.nextInt();
keepGoing = false;
} catch (InputMismatchException ex) {
System.out.println("***Invalid input, enter a number\n");
value.nextLine();
}
}
System.out.println("Enter the person's marital status");
String status = value.next();
System.out.println("Enter the person's gender");
String gender = value.next();
System.out.println("Enter the student's class standing");
String standing = value.next();
System.out.println("Enter the student's major");
String major = value.next();
// while loop and try catch for correct gpa numeric input
boolean realGPA = true;
double gpa = 0.0;
while (realGPA) {
try {
System.out.println("Enter the student's gpa");
gpa = value.nextDouble();
if ((gpa >= 0.0) && (gpa <= 4.0))
realGPA = false;
else
System.out.println("***Invalid input, enter a number between 0.0 and 4.0\n");
} catch (InputMismatchException ex) {
System.out.println("***Invalid input, enter a number between 0.0 and 4.0\n");
value.nextLine();
}
}
if (Student.addStudent(first, last, gender, age, status, major, standing, gpa)) {
System.out.println("Student Added\n");
} else {
System.out.println("Insufficient space to add student\n");
}
}
// option 3 method addFaculty
public static void option3() {
Scanner value = new Scanner(System.in);
System.out.println("Enter the first and last name of the person");
String first = value.next();
String last = value.next();
// while loop and try catch for correct age numeric input
boolean keepGoing = true;
int age = 0;
while (keepGoing) {
try {
System.out.println("Enter the person's age");
age = value.nextInt();
keepGoing = false;
} catch (InputMismatchException ex) {
System.out.println("***Invalid input, enter a number\n");
value.nextLine();
}
}
System.out.println("Enter the person's marital status");
String status = value.next();
System.out.println("Enter the person's gender");
String gender = value.next();
System.out.println("Enter the faculty member's professor type (lecturer, assistant, associate, full)");
String professorType = value.next();
if (Faculty.addFaculty(first, last, gender, age, status, professorType)) {
System.out.println("Faculty Added\n");
} else {
System.out.println("Insufficient space to add faculty\n");
}
}
// option 4 method listPeople
public static void option4() {
System.out.println("People List\n" + Person.listPersons(Person.getPeople()));
}
public static void assignAdvisor() {
// counters for name matches
int studentMatchCount = 0;
int advisorMatchCount = 0;
Scanner value = new Scanner(System.in);
System.out.println("Enter the first and last name of the student to search for");
String studentNameTest = value.nextLine();
// step through people[] to find a name match (for Student)
for (int i = 0; i < Person.totPeople; i++) {
if (Person.people[i].equals(studentNameTest)) {
studentMatchCount++;
// check if the instance with the name match is a Student instance
if (Person.people[i] instanceof Student) {
// if true, ask for advisor name
System.out.println("Enter the first and last name of the advisor to search for");
String advisorNameTest = value.nextLine();
// step through people[] to find a name match (for advisor)
for (int j = 0; j < Person.totPeople; j++) {
if (Person.people[j].equals(advisorNameTest)) {
advisorMatchCount++;
// check if the instance with the name match is a Faculty instance
if (Person.people[j] instanceof Faculty) {
// if yes, print out successful message
System.out.println("Advisor assigned\n");
((Student)Person.people[i]).setAdvisor(((Faculty)Person.people[j]));
}
else
// name match for person was not a Faculty instance
System.out.println("Sorry, that name belongs to a person, but not a faculty\n");
}
}
if (advisorMatchCount == 0)
System.out.println("Sorry, no faculty found\n");
}
else
System.out.println("Sorry, that name belongs to a person, but not a student\n");
}
}
if (studentMatchCount == 0)
System.out.println("Sorry, no student found\n");
}
}
UML Diagram
