Направьте на правильный ход мысли :)
package com.javarush.task.task20.task2002;
import java.io.*;
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
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
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 {
PrintWriter printWriter = new PrintWriter(outputStream);
if (users.size() > 0) {
for (User user : users) {
printWriter.println(user.getFirstName());
printWriter.println(user.getLastName());
printWriter.println(user.getBirthDate().getTime());
printWriter.println(user.isMale());
printWriter.println(user.getCountry());
}
}
printWriter.close();
}
public void load(InputStream inputStream) throws Exception {
BufferedReader bufferedReader = new BufferedReader(new InputStreamReader(inputStream));
User user = new User();
while (bufferedReader.ready()) {
user.setFirstName(bufferedReader.readLine());
user.setLastName(bufferedReader.readLine());
long longDate = Long.parseLong(bufferedReader.readLine());
user.setBirthDate(new Date(longDate));
user.setMale(Boolean.parseBoolean(bufferedReader.readLine()));
user.setCountry(User.Country.valueOf(bufferedReader.readLine()));
users.add(user);
}
bufferedReader.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;
}
}
}