list

public class PhoneBook
{
    private Contact [] list;
    private int count;
    private static final int MAX_CONTACT = 40;

    public PhoneBook (){
        count = 0;
        list = new Contact[MAX_CONTACT];
   }

    public void addContact(String name, String phone){
       list[count] = new Contact(name, phone);
       count++;
    }

    public void delContact(String name){
        for (int i = 0; i < count; i++) {
            if(list[i].getN().equals(name)){

                for (int j = i; j < count-1; j++) {
                Contact temp = list[j];
                list[j] = list[j+1];
                list[j+1]=temp;
                }
                list[count-1] = null;
                count--;
            }
        }
     }
    public String getPhone(String name){
    for (int i = 0; i < count; i++) {
        if(list[i].equals(name)){
            return list[i].getP();
        }
    }
    return null;
    }

    public String[] getAllContactsNames(){
        String[] names = new String[count];
        for (int i = 0; i < count; i++) {
            names[i] = list[i].getN();
        }
        return names;
    }

    @Override
    public String toString() {
        for (int i = 0; i < count; i++) {

        }
        return "PhoneBook [list=" + Arrays.toString(list) + "]";
    }
    }