From efff8f0c3c423c2ab5c5229ce97b2e60ccffa538 Mon Sep 17 00:00:00 2001
From: "Task-1.1" <apzigaziga@gmail.com>
Date: Sun, 27 Dec 2020 09:49:11 +0500
Subject: [PATCH] =?UTF-8?q?=D0=91=D0=BE=D0=B6=D0=BA=D0=BE=D0=B2=20=D0=9A?=
 =?UTF-8?q?=D0=BE=D1=81=D1=82=D1=8F=20=D0=97=D0=B0=D0=B4=D0=B0=D0=BD=D0=B8?=
 =?UTF-8?q?=D0=B5=209.2?=
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---
 .../src/com/example/task02/SavedList.java     | 68 ++++++++++++++++---
 1 file changed, 60 insertions(+), 8 deletions(-)

diff --git a/09-java-generics-collections/task02/src/com/example/task02/SavedList.java b/09-java-generics-collections/task02/src/com/example/task02/SavedList.java
index a4e2fb571..16541abc7 100644
--- a/09-java-generics-collections/task02/src/com/example/task02/SavedList.java
+++ b/09-java-generics-collections/task02/src/com/example/task02/SavedList.java
@@ -2,34 +2,86 @@
 
 import java.io.File;
 import java.io.Serializable;
+import java.io.*;
+import java.nio.file.Files;
+import java.nio.file.Path;
 import java.util.AbstractList;
+import java.util.ArrayList;
+import java.util.Objects;
 
-public class SavedList<E extends Serializable> extends AbstractList<E> {
+public class SavedList<E extends Serializable> extends AbstractList<E>
+{
+    private final ArrayList<E> list;
+    private final Path path;
 
-    public SavedList(File file) {
+    public SavedList(File file)
+    {
+        Objects.requireNonNull(file);
+        ArrayList<E> tmp;
+        try (ObjectInputStream objectInputStream = new ObjectInputStream(new FileInputStream(file)))
+        {
+            tmp = (ArrayList<E>) objectInputStream.readObject();
+            if (tmp == null) {
+                tmp = new ArrayList<>();
+            }
+        } catch (Exception exception)
+        {
+            System.err.println(exception.toString() + ". Creating new empty list...");
+            tmp = new ArrayList<>();
+        }
+        this.list = tmp;
+        this.path = file.toPath();
+
+    }
+
+    private void sync()
+    {
+        try (ObjectOutputStream outputStream = new ObjectOutputStream(Files.newOutputStream(this.path)))
+        {
+            outputStream.writeObject(this.list);
+        } catch (IOException e)
+        {
+            e.printStackTrace();
+        }
     }
 
     @Override
-    public E get(int index) {
+    public E get(int index)
+    {
         return null;
+        return this.list.get(index);
     }
 
     @Override
-    public E set(int index, E element) {
+    public E set(int index, E element)
+    {
         return null;
+        E elem = this.list.set(index, element);
+        this.sync();
+        return elem;
     }
 
     @Override
-    public int size() {
+    public int size()
+    {
         return 0;
+        return this.list.size();
     }
 
     @Override
-    public void add(int index, E element) {
+    public void add(int index, E element)
+    {
+        this.list.add(index, element);
+        this.sync();
     }
 
     @Override
-    public E remove(int index) {
-        return null;
+    public E remove(int index)
+    {
+        E elem = this.list.remove(index);
+        this.sync();
+        return elem;
     }
 }
+
+