ZCW-PhoneBook/Entry.java

import java.util.ArrayList;
import java.util.List;
public class Entry
{
    String phoneNumber;
    List<String> entryArray = new ArrayList <String>();

    public Entry(String phoneNumber){
        entryArray.add(0,phoneNumber);
    }

    public String getPhoneNumber(){
        StringBuilder phoneNumber = new StringBuilder();
        if(entryArray.size()>1){
            for(int i  = 0; i < entryArray.size()-1; i++){
                phoneNumber.append(entryArray.get(i) + ", ");
            }
        }
        phoneNumber.append(entryArray.get(entryArray.size()-1));
        return phoneNumber.toString();
    }

    public void addPhoneNumber(String phoneNumber){
        entryArray.add(phoneNumber);
    }

    public boolean entryArrayContainsNumber(String phonenumber){
        boolean containsNumber = false;
        if(entryArray.contains(phonenumber)){
            containsNumber = true;
        }
        return containsNumber;
    }

    public int getNumberOfRecords(){
        return entryArray.size();
    }

    public void removePhoneNumber(String phoneNumber){
        for(String number:entryArray){
            if(phoneNumber.equals(number)){
                entryArray.remove(number);
                break;
            }
        }
    }
}