Question about arrays

Question

I have a question regarding arrays. I have a contact class and two classes that extend from it a SchoolContact class and FamilyContact class. Right now as my code is I have three diffrernt arrays to hold all the info. Is there a way to store all this info into one array and print out only the School contacts at one time if the user enters that option or print out all the options at one time if the user selects that? my code is below
//The imports below are for I/O
import java.util.*;
import java.io.*;
// Declare a public class
public class CodeExample {
     public static void main(String[] args) {
          // Create scanner
          Scanner sc = new Scanner(System.in);
          //Declare array to hold school contact
          SchoolContact[] schoolContactInfo = new SchoolContact[10];
          FamilyContact[] familyContactInfo = new FamilyContact[10];
          Contact [] contactInfo = new Contact [10];
          // Declare variables
          int menuOption, creditHours, area, prefix, suffix, studentId, studentContactsSoFar = 0, familyContactsSoFar = 0, contactsSoFar = 0;
          double gpa;
          char studentData, familyRelationOption;
          String menuOption2, menuOption3;
          // Get menu to display
          do {
               System.out.println("-----MENU-----");
               System.out.println("1) Enter a Student Contact");
               System.out.println("2) Enter a Family Contact");
               System.out.println("3) Enter a Contact");
               System.out.println("4) Display Student Contacts");
               System.out.println("5) Display Family Contacts");
               System.out.println("6) Display Contacts");
               System.out.println("7) Display All Contacts");
               System.out.println("8) Quit");
               System.out.println("Selection:");
               menuOption = sc.nextInt();
               SchoolContact schoolContact = new SchoolContact();
               FamilyContact familyContact = new FamilyContact();
               Contact contact = new Contact();
               // Implement switch statement to
               switch (menuOption) {
               // If user enters 1 to create contact this will be displayed to user
               case 1:
                    System.out.println("Enter The First Name of The Student");
                    schoolContact.setFirstName(sc.next());     
                    System.out.println("Enter The Last Name of The Student");
                    schoolContact.setLastName(sc.next());
                    System.out.println("Enter the Student ID of this person: 900");
                    schoolContact.setStudentId(Integer.parseInt("900" + sc.next()));
                    System.out.println("G)Enter The GPA For This Student");
                    System.out.println("H)Enter The Number Of Completed Credit Hours");
                    menuOption2 = sc.next().toUpperCase();
                    studentData = menuOption2.charAt(0);
                    // Prompts the user for the next choice
                    if (studentData == 'G') {
                         System.out.println("GPA: ");
                         gpa = sc.nextDouble();
                         //create the Data object
                         Data data = new Data();
                         data.setStudentGPA(gpa);
                         //add it to the contact
                         schoolContact.setData(data);
                         else if (studentData == 'H') {
                              System.out.println("Hours: ");
                              creditHours = sc.nextInt();
                              //create the Data object
                              Data data = new Data();
                              data.setStudentCreditHours(creditHours);
                              //add it to the schoolcontact
                              schoolContact.setData(data);
                              else {
                                   System.out.println("Invalid Entry");
                    System.out.println("Enter The Phone Number of This Student");
                    System.out.println("(###)-###-####: ");
                    area = sc.nextInt();
                    prefix = sc.nextInt();
                    suffix = sc.nextInt();
                    //create the phone object
                    Phone_Number studentPhone = new Phone_Number(area, prefix,     suffix);
                    //add it to the Schoolcontact
                    schoolContact.setPhone(studentPhone);
                    //store info in an array
                    schoolContactInfo[ studentContactsSoFar ] = schoolContact;
                    //increase the counter to point to the next free location (if any)
                    studentContactsSoFar++;
                    break;
               case 2:
                    System.out.println("Enter the First Name of The Contact");
                    familyContact.setFirstName(sc.next());     
                    System.out.println("Enter The Last Name of The Student");
                    familyContact.setLastName(sc.next());
                    System.out.println("Enter The Relationship of This Contact");
                    System.out.println("A) SISTER");
                    System.out.println("B) BROTHER");
                    System.out.println("C) MOTHER");
                    System.out.println("D) FATHER");
                    System.out.println("E) OTHER");
                    menuOption3 = sc.next();
                    familyRelationOption = menuOption3.charAt(0);
                    if (familyRelationOption == 'A') {
                         System.out.println("Relationship: SISTER ");
                         familyContact.setRelationType(FamilyContact.RelationType.SISTER);
                         else if (familyRelationOption == 'B') {
                         System.out.println("Relationship: BROTHER ");
                         familyContact.setRelationType(FamilyContact.RelationType.BROTHER);
                              else if (familyRelationOption == 'C') {
                                   System.out.println("Relationship: MOTHER ");
                                   familyContact.setRelationType(FamilyContact.RelationType.MOTHER);
                                   else if (familyRelationOption == 'D') {
                                        System.out.println("Relationship: FATHER ");
                                        familyContact.setRelationType(FamilyContact.RelationType.FATHER);
                                        else if (familyRelationOption == 'E') {
                                             System.out.println("Relationship: OTHER ");
                                             familyContact.setRelationType(FamilyContact.RelationType.OTHER);
                    System.out.println("Enter The Phone Number of This Contact");
                    System.out.println("(###)-###-####: ");
                    area = sc.nextInt();
                    prefix = sc.nextInt();
                    suffix = sc.nextInt();
                    //create the phone object
                    Phone_Number familyContactNumber = new Phone_Number(area, prefix,     suffix);
                    //add it to the familyContact
                    familyContact.setPhone(familyContactNumber);
                    //store info in an array
                    familyContactInfo[ familyContactsSoFar ] = familyContact;
                    //increase the counter to point to the next free location (if any)
                    familyContactsSoFar++;
                    break;
               case 3:
                    System.out.println("Enter The First Name of The Contact");
                    contact.setFirstName(sc.next());     
                    System.out.println("Enter The Last Name of The Contact");
                    contact.setLastName(sc.next());
                    System.out.println("Enter The Phone Number of This Contact");
                    System.out.println("(###)-###-####: ");
                    area = sc.nextInt();
                    prefix = sc.nextInt();
                    suffix = sc.nextInt();
                    //create the phone object
                    Phone_Number contactNumber = new Phone_Number(area, prefix,     suffix);
                    //add it to the contact
                    contact.setPhone(contactNumber);
                    //store info in an array
                    contactInfo[ contactsSoFar ] = contact;
                    //increase the counter to point to the next free location (if any)
                    contactsSoFar++;
                    break;
               case 4:
                    System.out.println("-----Student Contacts-----");
                    //print each stored contact
                    for( int i = 0 ; i < studentContactsSoFar ; i++ )
                         System.out.println( (i+1) + ". " + schoolContactInfo.toString() + "\n");
                    break;
               case 5:
                    System.out.println("-----Family Contacts-----");
                    //prints each stored contact
                    for( int i = 0 ; i < familyContactsSoFar ; i++ )
                         System.out.println( (i+1) + ". " + familyContactInfo[i].toString() + "\n");
                    break;
               case 6:
                    System.out.println("-----Contacts-----");
                    //prints each stored contact
                    for( int i = 0 ; i < contactsSoFar ; i++ )
                         System.out.println( (i+1) + ". " + contactInfo[i].toString() + "\n");
                    break;
               case 7:
                    System.out.println("Calling Case 7");
                    for( int i = 0 ; i < contactsSoFar ; i++ )
                         System.out.println( (i+1) + ". " + contactInfo[i].toString() + "\n");
                    break;
               case 8:
                    System.out.println("Program Ended");
                    break;
          } while (menuOption != 8);

Answer 1

how would I go in printing the contacts from one array, then the next array and so on?
case 7:
    System.out.println("Calling Case 7");
    for( int i = 0 ; i < studentContactsSoFar ; i++ ) {
        System.out.println( (i+1) + ". " + schoolContactInfo.toString() + "\n");
for( int i = 0 ; i < familyContactsSoFar ; i++ ) {
System.out.println( (i+1) + ". " + familyContactInfo[i].toString() + "\n");
for( int i = 0 ; i < contactsSoFar ; i++ ) {
System.out.println( (i+1) + ". " + contactInfo[i].toString() + "\n");
break;