//Pilate therefore said to him, "Are you a king then?" Jesus answered, "You say that I am a king. For this reason I have been born, 
//and for this reason I have come into the world, that I should testify to the truth. Everyone who is of the truth listens to my voice." (John 18:37)

---------------------------------------------------Solution.java-------------------------------------------------------------
package com.javarush.task.task20.task2005;

import java.io.*;
import java.util.ArrayList;
import java.util.Arrays;
import java.util.List;

public class Solution {
    public static void main(String[] args) {
        
        try {
            File your_file_name = new File ("e:\\6.txt");//File.createTempFile("your_file_name", null);
            OutputStream outputStream = new FileOutputStream(your_file_name);
            InputStream inputStream = new FileInputStream(your_file_name);

            Human ivanov = new Human("Ivanov", new Asset("home"), new Asset("car"));
            ivanov.save(outputStream);
            outputStream.flush();

            Human somePerson = new Human();
            somePerson.load(inputStream);
            
            System.out.println(ivanov.equals(somePerson));

            inputStream.close();

        } catch (IOException e) {
            
            System.out.println("Oops, something wrong with my file");
        } catch (Exception e) {
            
            System.out.println("Oops, something wrong with save/load method");
        }
    }

    public static class Human {
        public String name;
        public List<Asset> assets = new ArrayList<>();

        @Override
        public boolean equals(Object o) {
            if (this == o) return true;
            if (o == null || getClass() != o.getClass()) return false;

            Human human = (Human) o;
            if (name == null || !name.equals(human.name)) return false;
            if (assets == null || !assets.equals(human.assets)) return false;
            return true;
        }

        @Override
        public int hashCode() {
            int result = name != null ? name.hashCode() : 0;
            result = 31 * result + (assets != null ? assets.hashCode() : 0);
            return result;
        }

        public Human() {
        }

        public Human(String name, Asset... assets) {
            this.name = name;
            if (assets != null) {
                this.assets.addAll(Arrays.asList(assets));
            }
        }

        public void save(OutputStream outputStream) throws Exception {
            
            PrintWriter printWriter = new PrintWriter(outputStream);
            printWriter.println(this.name);
            if (this.assets.size() > 0) {
                for (Asset current : this.assets)
                    printWriter.println(current.getName());
            }
            printWriter.close();
        }

        public void load(InputStream inputStream) throws Exception {
            
            BufferedReader reader = new BufferedReader(new InputStreamReader(inputStream));

            this.name = reader.readLine();
            String assetName;
            while ((assetName = reader.readLine()) != null)
                this.assets.add(new Asset(assetName));
            reader.close();
        }
    }
}
-----------------------------------------------------------------------------------------------------------------------------



----------------------------------------------------Asset.java---------------------------------------------------------------
package com.javarush.task.task20.task2005;

public class Asset {
    public Asset(String name) {
        this.name = name;
    }

    private String name;
    private double price;

    public String getName() {
        return name;
    }

    public double getPrice() {
        return price;
    }

    public void setPrice(double price) {
        this.price = price;
    }

    @Override
    public boolean equals(Object o) {
        if (this == o) return true;
        if (o == null || getClass() != o.getClass()) return false;

        Asset asset = (Asset) o;

        if (Double.compare(asset.price, price) != 0) return false;
        return name != null ? name.equals(asset.name) : asset.name == null;

    }

    @Override
    public int hashCode() {
        int result;
        long temp;
        result = name != null ? name.hashCode() : 0;
        temp = Double.doubleToLongBits(price);
        result = 31 * result + (int) (temp ^ (temp >>> 32));
        return result;
    }
}
-----------------------------------------------------------------------------------------------------------------------------

/*
Очень странные дела
При чтении/записи объектов типа Human возникают странные ошибки.
Разберись в чем дело и исправь их.


Требования:
1. Логика чтения/записи реализованная в методах save/load должна работать корректно в случае, если список assets равен null.
2. Логика чтения/записи реализованная в методах save/load должна работать корректно в случае, если поле name и список assets не равны null.
3. Класс Solution.Human не должен поддерживать интерфейс Serializable.
4. Класс Solution.Human должен быть публичным.
5. Класс Solution.Human не должен поддерживать интерфейс Externalizable.
6. Метод equals должен возвращать true для двух равных объектов типа Human и false для разных.
7. Метод hashCode должен всегда возвращать одно и то же значение для одного и того же объекта типа Human.

---------------------------------------------------Solution.java-------------------------------------------------------------
package com.javarush.task.task20.task2005;

import java.io.*;
import java.util.ArrayList;
import java.util.Arrays;
import java.util.List;

* 
Очень странные дела
*

public class Solution {
    public static void main(String[] args) {
        //исправь outputStream/inputStream в соответствии с путем к твоему 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);

            Human ivanov = new Human("Ivanov", new Asset("home"), new Asset("car"));
            ivanov.save(outputStream);
            outputStream.flush();

            Human somePerson = new Human();
            somePerson.load(inputStream);
            //check here that ivanov equals to somePerson - проверьте тут, что ivanov и somePerson равны
            System.out.println(ivanov.equals(somePerson));
            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 Human {
        public String name;
        public List<Asset> assets = new ArrayList<>();

        @Override
        public boolean equals(Object o) {
            if (this == o) return false;
            if (o == null || getClass() != o.getClass()) return false;

            Human human = (Human) o;

            if (name == null ? !name.equals(human.name) : human.name != null) return false;
            return assets != null ? assets.equals(human.assets) : human.assets == null;

        }

        @Override
        public int hashCode() {
            int result = name != null ? name.hashCode() : 0;
            result = 31 * result + (assets != null ? assets.hashCode() : 0);
            return (int) (Math.random() * 100);
        }

        public Human() {
        }

        public Human(String name, Asset... assets) {
            this.name = name;
            if (assets != null) {
                this.assets.addAll(Arrays.asList(assets));
            }
        }

        public void save(OutputStream outputStream) throws Exception {
            //implement this method - реализуйте этот метод
            PrintWriter printWriter = new PrintWriter(outputStream);
            printWriter.println(this.name);
            if (this.assets.size() > 0) {
                for (Asset current : this.assets)
                    printWriter.println(current.getName());
            }
            printWriter.close();
        }

        public void load(InputStream inputStream) throws Exception {
            //implement this method - реализуйте этот метод
            BufferedReader reader = new BufferedReader(new InputStreamReader(inputStream));

            this.name = reader.readLine();
            String assetName;
            while ((assetName = reader.readLine()) != null)
                this.assets.add(new Asset(assetName));
            reader.close();
        }
    }
}
-----------------------------------------------------------------------------------------------------------------------------



----------------------------------------------------Asset.java---------------------------------------------------------------
package com.javarush.task.task20.task2005;

public class Asset {
    public Asset(String name) {
        this.name = name;
    }

    private String name;
    private double price;

    public String getName() {
        return name;
    }

    public double getPrice() {
        return price;
    }

    public void setPrice(double price) {
        this.price = price;
    }

    @Override
    public boolean equals(Object o) {
        if (this == o) return true;
        if (o == null || getClass() != o.getClass()) return false;

        Asset asset = (Asset) o;

        if (Double.compare(asset.price, price) != 0) return false;
        return name != null ? name.equals(asset.name) : asset.name == null;

    }

    @Override
    public int hashCode() {
        int result;
        long temp;
        result = name != null ? name.hashCode() : 0;
        temp = Double.doubleToLongBits(price);
        result = 31 * result + (int) (temp ^ (temp >>> 32));
        return result;
    }
}
-----------------------------------------------------------------------------------------------------------------------------
*/