Вывод в консоль у меня верный, что же не так
nameA: AB2B2, nameB: C33
nameA: AB2B2, nameB: C33package com.javarush.task.task20.task2018;
import java.io.Externalizable;
import java.io.FileInputStream;
import java.io.FileOutputStream;
import java.io.IOException;
import java.io.ObjectInput;
import java.io.ObjectInputStream;
import java.io.ObjectOutput;
import java.io.ObjectOutputStream;
import java.io.Serializable;
public class App {
// Java program to demonstrate
// the case if superclass need
// not to be serializable
// while serializing subclass
// superclass A
// A class doesn't implement Serializable
// interface.
static class A {
protected String nameA = "A";
// parameterized constructor
public A(String nameA) {
this.nameA += nameA;
}
// default constructor
// this constructor must be present
// otherwise we will get runtime exception
public A() {
System.out.println("A's class constructor called");
}
}
// subclass B
// implementing Serializable interface
static class B extends A implements Serializable, Externalizable {
private String nameB;
public B() {
}
// parameterized constructor
public B(String nameA, String nameB) {
super(nameA);
this.nameA += nameA;
this.nameB = nameB;
}
@Override
public void writeExternal(ObjectOutput out) throws IOException {
out.writeObject(nameA);
out.writeObject(nameB);
}
@Override
public void readExternal(ObjectInput in) throws IOException, ClassNotFoundException {
nameA = (String) in.readObject();
nameB = (String) in.readObject();
}
}
public static void main(String[] args) throws Exception {
B b = new B("B2", "C33");
System.out.println("nameA: " + b.nameA + ", nameB: " + b.nameB);
// Serializing B's(subclass) object
final String fileName = "/home/sb_work/Загрузки/JavaRushTasks/2.JavaCore/src/com/javarush/task/task20/task2018/abc.ser";
//Saving of object in a file
FileOutputStream fos = new FileOutputStream(fileName);
ObjectOutputStream oos = new ObjectOutputStream(fos);
// Method for serialization of B's class object
oos.writeObject(b);
// closing streams
oos.close();
fos.close();
System.out.println("Object has been serialized");
// De-Serializing B's(subclass) object
// Reading the object from a file
FileInputStream fis = new FileInputStream(fileName);
ObjectInputStream ois = new ObjectInputStream(fis);
// Method for de-serialization of B's class object
B b1 = (B) ois.readObject();
// closing streams
ois.close();
fis.close();
System.out.println("Object has been deserialized");
System.out.println("nameA: " + b1.nameA + ", nameB: " + b1.nameB);
}
}