ΡΡΠΎ ΡΠΏΡΡΡΠΈΠ»?
Π² save Π·Π°ΠΏΠΈΡΡΠ²Π°Ρ ΠΈΠΌΡ, Π·Π°ΡΠ΅ΠΌ ΠΏΠΎ ΡΠΏΠΈΡΠΊΡ ΠΈΠΌΡ/ΠΏΡΠ°ΠΉΡ
Π² load ΡΠΈΡΠ°Ρ ΠΈΠΌΡ ΠΈ Π΄ΠΎΠ±Π°Π²Π»ΡΡ Π² ΡΠΏΠΈΡΠΎΠΊ ΠΎΠ±ΡΠ΅ΠΊΡΡ Asset Ρ ΠΏΠ°ΡΠ°ΠΌΠ΅ΡΡΠ°ΠΌΠΈ ΠΈΠΌΡ/ΠΏΡΠ°ΠΉΡ
package com.javarush.task.task20.task2001;
import java.io.*;
import java.util.ArrayList;
import java.util.Arrays;
import java.util.List;
/*
Π§ΠΈΡΠ°Π΅ΠΌ ΠΈ ΠΏΠΈΡΠ΅ΠΌ Π² ΡΠ°ΠΉΠ»: Human
*/
public class Solution {
public static void main(String[] args) {
//ΠΈΡΠΏΡΠ°Π²ΡΡΠ΅ outputStream/inputStream Π² ΡΠΎΠΎΡΠ²Π΅ΡΡΡΠ²ΠΈΠΈ Ρ ΠΏΡΡΠ΅ΠΌ ΠΊ Π²Π°ΡΠ΅ΠΌΡ ΡΠ΅Π°Π»ΡΠ½ΠΎΠΌΡ ΡΠ°ΠΉΠ»Ρ
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", 999_999.99), new Asset("car", 2999.99));
ivanov.save(outputStream);
outputStream.flush();
Human somePerson = new Human();
somePerson.load(inputStream);
inputStream.close();
//check here that ivanov equals to somePerson - ΠΏΡΠΎΠ²Π΅ΡΡΡΠ΅ ΡΡΡ, ΡΡΠΎ ivanov ΠΈ somePerson ΡΠ°Π²Π½Ρ
} 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<>();
public Human() {
}
public Human(String name, Asset... assets) {
this.name = name;
if (assets != null) {
this.assets.addAll(Arrays.asList(assets));
}
}
@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) : 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 result;
}
public void save(OutputStream outputStream) throws Exception {
PrintWriter writer = new PrintWriter(outputStream);
writer.println(this.name);
if(!assets.isEmpty()) {
for(Asset a: assets) {
writer.println(a.getName());
writer.println(a.getPrice());
}
}
writer.flush();
writer.close();
}
public void load(InputStream inputStream) throws Exception {
BufferedReader reader = new BufferedReader(new InputStreamReader(inputStream));
while (reader.ready()){
this.name = reader.readLine();
this.assets.add(new Asset(reader.readLine(), Double.parseDouble(reader.readLine())));
}
reader.close();
}
}
}