Сериализация не причем, по ней все проходи. Это уже переписанное решение заново, до этого было без нее, тоже самое было.
package com.javarush.task.task20.task2002;
import java.util.ArrayList;
import java.util.Date;
import java.util.List;
import java.io.*;
/*
Читаем и пишем в файл: JavaRush
*/
public class Solution {
public static void main(String[] args) {
//you can find your_file_name.tmp in your TMP directory or adjust outputStream/inputStream according to your file's actual location
//вы можете найти your_file_name.tmp в папке TMP или исправьте outputStream/inputStream в соответствии с путем к вашему реальному файлу
try {
File yourFile = File.createTempFile("your_file_name", null);
OutputStream outputStream = new FileOutputStream(yourFile);
InputStream inputStream = new FileInputStream(yourFile);
JavaRush javaRush = new JavaRush();
//initialize users field for the javaRush object here - инициализируйте поле users для объекта javaRush тут
/*javaRush.users.add(new User());
javaRush.users.get(0).setFirstName("Ivan");
javaRush.users.get(0).setLastName("Ivanov");
javaRush.users.get(0).setBirthDate(new Date(1254544));
javaRush.users.get(0).setCountry(User.Country.RUSSIA);
javaRush.users.get(0).setMale(true);
javaRush.users.add(new User());
javaRush.users.get(1).setFirstName("Mikhail");
javaRush.users.get(1).setLastName("Petrov");
javaRush.users.get(1).setBirthDate(new Date(54657));
javaRush.users.get(1).setCountry(User.Country.UKRAINE);
javaRush.users.get(1).setMale(true);
javaRush.users.add(new User());
javaRush.users.get(2).setFirstName("Alena");
javaRush.users.get(2).setLastName("Smirnova");
javaRush.users.get(2).setBirthDate(new Date(45895225));
javaRush.users.get(2).setCountry(User.Country.OTHER);
javaRush.users.get(2).setMale(false);*/
javaRush.save(outputStream);
outputStream.flush();
JavaRush loadedObject = new JavaRush();
loadedObject.load(inputStream);
System.out.println(javaRush.equals(loadedObject));
//here check that the javaRush object is equal to the loadedObject object - проверьте тут, что javaRush и loadedObject равны
outputStream.close();
inputStream.close();
} catch (IOException e) {
//e.printStackTrace();
System.out.println("Oops, something is wrong with my file");
} catch (Exception e) {
//e.printStackTrace();
System.out.println("Oops, something is wrong with the save/load method");
}
}
public static class JavaRush {
public List<User> users = new ArrayList<>();
public void save(OutputStream outputStream) throws Exception {
Integer usersCount = 0;
ObjectOutputStream objectOutputStream = new ObjectOutputStream(outputStream);
if (users.isEmpty()) {
objectOutputStream.writeObject(usersCount);
// throw new Exception();
}
else {
usersCount = users.size();
objectOutputStream.writeObject(usersCount);
for (User u : users) {
objectOutputStream.writeObject(u);
}
}
objectOutputStream.close();
}
public void load(InputStream inputStream) throws Exception {
ObjectInputStream objectInputStream = new ObjectInputStream(inputStream);
Integer usersCount = (Integer) objectInputStream.readObject();
if (usersCount != 0) {
for (int i = 0; i < usersCount; i++) {
users.add((User) objectInputStream.readObject());
}
}
else {
users = null;
// throw new Exception();
}
objectInputStream.close();
}
@Override
public boolean equals(Object o) {
if (this == o) return true;
if (o == null || getClass() != o.getClass()) return false;
JavaRush javaRush = (JavaRush) o;
return users != null ? users.equals(javaRush.users) : javaRush.users == null;
}
@Override
public int hashCode() {
return users != null ? users.hashCode() : 0;
}
}
}