Вопрос и так понятен.
package com.javarush.task.task20.task2002;
import java.io.*;
import java.text.DateFormat;
import java.text.SimpleDateFormat;
import java.util.ArrayList;
import java.util.Date;
import java.util.List;
/*
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
User user = new User();
user.setFirstName("Petr");
user.setLastName("Ivanov");
String date = "05 05 1955";
DateFormat df = new SimpleDateFormat("dd MM yyyy");
Date d = df.parse(date);
user.setBirthDate(d);
user.setMale(true);
user.setCountry(User.Country.OTHER);
javaRush.users.add(user);
javaRush.save(outputStream);
outputStream.flush();
javaRush.save(outputStream);
outputStream.flush();
JavaRush loadedObject = new JavaRush();
// loadedObject.load(inputStream);
//here check that the javaRush object is equal to the loadedObject object - проверьте тут, что javaRush и loadedObject равны
if(javaRush.equals(loadedObject)){
loadedObject.load(inputStream);
}
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 {
//implement this method - реализуйте этот метод
PrintWriter writer = new PrintWriter(outputStream);
if (users != null) {
for (User user : users) {
writer.println(user.getFirstName());
writer.println(user.getLastName());
writer.println(user.getBirthDate().getTime());
writer.println(user.isMale());
writer.println(user.getCountry().getDisplayName());
}
}
writer.flush();
writer.close();
}
public void load(InputStream inputStream) throws Exception {
// implement this method - реализуйте этот метод
BufferedReader reader = new BufferedReader(new InputStreamReader(inputStream));
while (reader.ready()) {
User user = new User();
user.setFirstName(reader.readLine());
user.setLastName(reader.readLine());
user.setBirthDate(new Date(Long.parseLong(reader.readLine())));
user.setMale(Boolean.parseBoolean(reader.readLine()));
String country = reader.readLine();
if ("Ukraine".equals(country)) {
user.setCountry(User.Country.UKRAINE);
}
if ("Russia".equals((country))) {
user.setCountry(User.Country.RUSSIA);
}
if ("Other".equals(country)) {
user.setCountry(User.Country.OTHER);
}
users.add(user);
}
reader.close();
System.out.println(users.get(0).getFirstName());
System.out.println(users.get(0).getLastName());
System.out.println(users.get(0).getBirthDate());
System.out.println(users.get(0).isMale());
System.out.println(users.get(0).getCountry().getDisplayName());
}
@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;
}
}
}