Проходит все валидации, кроме одной:
"Логика чтения/записи реализованная в методах save/load должна работать корректно в случае, если список users не пустой."
Поправил код. Теперь вообще интересно - оба equals и hashCode возвращают true. Но валидатор упорно не принимает все с той же единственной ошибкой. Это фича или баг? )))
package com.javarush.task.task20.task2002;
import java.io.*;
import java.text.SimpleDateFormat;
import java.util.*;
/*
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 fix outputStream/inputStream according to your real file 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 your_file_name = File.createTempFile("your_file_name", null);
OutputStream outputStream = new FileOutputStream(your_file_name);
InputStream inputStream = new FileInputStream(your_file_name);
JavaRush javaRush = new JavaRush();
//initialize users field for the javaRush object here - инициализируйте поле users для объекта javaRush тут
javaRush.save(outputStream);
outputStream.flush();
JavaRush loadedObject = new JavaRush();
loadedObject.load(inputStream);
//check here that javaRush object equals to loadedObject object - проверьте тут, что javaRush и loadedObject равны
System.out.println(javaRush.equals(loadedObject));
System.out.println(javaRush.hashCode() == loadedObject.hashCode());
if (javaRush.equals(loadedObject) & javaRush.hashCode() == loadedObject.hashCode()) System.out.println("same");
outputStream.close();
inputStream.close();
} catch (IOException e) {
//e.printStackTrace();
System.out.println("Oops, something wrong with my file");
} catch (Exception e) {
//e.printStackTrace();
System.out.println("Oops, something wrong with 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 printWriter = new PrintWriter(outputStream);
if (!this.users.isEmpty()) {
printWriter.println(users.size());
for (User a : this.users) {
printWriter.println(a.getFirstName() == null ? "null" : a.getFirstName());
printWriter.println(a.getLastName() == null ? "null" : a.getLastName());
printWriter.println(a.getBirthDate() == null ? "null" : a.getBirthDate().getTime());
printWriter.println(a.isMale());
printWriter.println(a.getCountry() == null ? "null" : a.getCountry().getDisplayedName());
}
} else printWriter.println(-1);
printWriter.flush();
printWriter.close();
}
public void load(InputStream inputStream) throws Exception {
//implement this method - реализуйте этот метод
BufferedReader bfr = new BufferedReader(new InputStreamReader(inputStream));
while (bfr.ready()) {
int x = Integer.parseInt(bfr.readLine());
if (x > 0) {
User us = new User();
for (int i = 0; i < x; i++) {
String s = bfr.readLine();
us.setFirstName(s.equals("null") ? null : s);
s = bfr.readLine();
us.setLastName(s.equals("null") ? null : s);
s = bfr.readLine();
us.setBirthDate(s.equals("null") ? null : new Date(Long.parseLong(s)));
us.setMale(Boolean.valueOf(bfr.readLine()));
s = bfr.readLine();
us.setCountry(s.equals("null") ? null : User.Country.valueOf(s.toUpperCase()) );
}
this.users.add(us);
} else this.users = new ArrayList<>();
}
bfr.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;
}
}
}
package com.javarush.task.task20.task2002;
import java.io.*;
import java.text.SimpleDateFormat;
import java.util.*;
/*
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 fix outputStream/inputStream according to your real file 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 your_file_name = File.createTempFile("your_file_name", null);
OutputStream outputStream = new FileOutputStream(your_file_name);
InputStream inputStream = new FileInputStream(your_file_name);
JavaRush javaRush = new JavaRush();
//initialize users field for the javaRush object here - инициализируйте поле users для объекта javaRush тут
javaRush.save(outputStream);
outputStream.flush();
JavaRush loadedObject = new JavaRush();
loadedObject.load(inputStream);
//check here that javaRush object equals to loadedObject object - проверьте тут, что javaRush и loadedObject равны
outputStream.close();
inputStream.close();
} catch (IOException e) {
//e.printStackTrace();
System.out.println("Oops, something wrong with my file");
} catch (Exception e) {
//e.printStackTrace();
System.out.println("Oops, something wrong with 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 printWriter = new PrintWriter(outputStream);
if (!users.isEmpty()) {
printWriter.println(users.size());
for (User a : users) {
printWriter.println(a.getFirstName() == null ? "null" : a.getFirstName());
printWriter.println(a.getLastName() == null ? "null" : a.getLastName());
printWriter.println(a.getBirthDate() == null ? "null" : new SimpleDateFormat("EEE MMM dd HH:mm:ss z yyyy", Locale.ENGLISH).format(a.getBirthDate()));
printWriter.println(a.isMale());
printWriter.println(a.getCountry() == null ? "null" : a.getCountry());
}
} else printWriter.println(-1);
printWriter.flush();
}
public void load(InputStream inputStream) throws Exception {
//implement this method - реализуйте этот метод
BufferedReader bfr = new BufferedReader(new InputStreamReader(inputStream));
while (bfr.ready()) {
int x = Integer.parseInt(bfr.readLine());
if (x > 0) {
User us = new User();
for (int i = 0; i < x; i++) {
String s = bfr.readLine();
us.setFirstName(s == "null" ? null : s);
s = bfr.readLine();
us.setLastName(s == "null" ? null : s);
s = bfr.readLine();
us.setBirthDate(s == "null" ? null : new SimpleDateFormat("EEE MMM dd HH:mm:ss z yyyy", Locale.ENGLISH).parse(s));
us.setMale(Boolean.valueOf(bfr.readLine()));
s = bfr.readLine();
us.setCountry(s == "null" ? null : (User.Country.valueOf(bfr.readLine())));
}
users.add(us);
} else users = new ArrayList<>();
}
}
@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;
}
}
}