Question 13: Consider the code given below. What will the output be?

1import java.io.*;
2class Laptop implements Serializable {
3    private double price;
4    private transient String model;
5    private transient int serialNum;
6    // Constructor to initialize instance variables
7    public String toString() {
8        return "price=" + price + ", model=" + model + ", serialNum=" + serialNum;
9    }
10
11    private void writeObject(ObjectOutputStream out) throws IOException {
12        out.defaultWriteObject();
13        out.writeInt(serialNum + 100);
14    }
15
16    private void readObject(ObjectInputStream in) throws Exception {
17        in.defaultReadObject();
18        serialNum = in.readInt() - 100;
19    }
20}
21public class Test {
22    public static void main(String[] args) throws Exception {
23        var fos = new FileOutputStream("Laptop.txt");
24        var oos = new ObjectOutputStream(fos);
25        Laptop l1 = new Laptop(899.99, "Dell", 987654);
26        oos.writeObject(l1);
27
28        var fis = new FileInputStream("Laptop.txt");
29        var ois = new ObjectInputStream(fis);
30        Laptop obj = (Laptop) ois.readObject();
31        System.out.println(obj);
32    }
33}