Входно-изходни операции с масиви от обекти - запис и четене във файл "save.dat"

import java.io.Serializable;
public class Pers implements Serializable{
    String name;
    int age;
    Pers(String name,int age){
        this.name = name;
        this.age = age;
    }
}

import java.io.*;
public class ArrPers implements Serializable{
    int size;
    Pers arr[];
    ArrPers(){
        arr = new Pers[5];
        size = 0;
    }
    void add(Pers p){
        if(size >= arr.length-1){
            Pers temp[] = new Pers[2*arr.length];
            System.arraycopy(arr, 0, temp, 0, arr.length);
            arr=temp;
        }
        arr[size++]=p;
    }
    void prt(){
        System.out.println ("Arrpers: "+size+" objets");
        for(int i=0;i<this.size;i++){
            System.out.println("name: "+arr[i].name+"\tage:"+ arr[i].age);
        }
    }
    void remove (Pers p){
        for(int i=0;i<size;i++){
            if (p==arr[i]){
                arr[i]=arr[--size];
                break;
            }
        }
    }
    void save(){
        try{
            FileOutputStream fos = new FileOutputStream ("save.dat");
            ObjectOutputStream oos = new ObjectOutputStream (fos);
            oos.writeObject(this);
        }
        catch(Exception ex){}
    }
    static ArrPers load(){
        ArrPers p= null;
        try{
            FileInputStream fis = new FileInputStream ("save.dat");
            ObjectInputStream ois = new ObjectInputStream (fis);
            p= (ArrPers)ois.readObject();
        }
        catch(Exception ex){}
        return p;
    }
}

public class Test {
    public static void main(String arg[]){
        ArrPers p =null;
        p= ArrPers.load();
        if(p == null) p = new ArrPers();
        p.prt();
        for(int i=0;i<3;i++){
            String name ="client"+(int)(Math.random()*1000);
            int age = (int)(Math.random()*80);
            p.add(new Pers(name,age));
        }
        p.prt();
        p.save();
    }
}