diff --git a/task01/src/com/example/task01/Task01Main.java b/task01/src/com/example/task01/Task01Main.java
index 5dfc11b..d6e0fe4 100644
--- a/task01/src/com/example/task01/Task01Main.java
+++ b/task01/src/com/example/task01/Task01Main.java
@@ -1,20 +1,50 @@
 package com.example.task01;
 
+import java.io.BufferedReader;
 import java.io.File;
 import java.io.IOException;
+import java.io.InputStreamReader;
 
 public class Task01Main {
     public static void main(String[] args) throws IOException, InterruptedException {
         //здесь вы можете вручную протестировать ваше решение, вызывая реализуемый метод и смотря результат
         // например вот так:
 
-        /*
         System.out.println(extractSoundName(new File("task01/src/main/resources/3727.mp3")));
-        */
     }
 
     public static String extractSoundName(File file) throws IOException, InterruptedException {
         // your implementation here
-        return "sound name";
+        ProcessBuilder pb = new ProcessBuilder();
+        pb.command("C:\\Users\\User\\Downloads\\ffmpeg-8.0.1-essentials_build\\bin\\ffprobe.exe",
+                "-v", "error",
+                "-of" ,"flat",
+                "-show_format",
+                file.getAbsolutePath());
+        pb.directory(new File("E:\\kek\\8-java-io2"));
+        Process process = pb.start();
+        String soundName = null;
+        try{ BufferedReader bfreader = new BufferedReader(
+                new InputStreamReader(process.getInputStream()));
+
+            String line;
+
+            while ((line = bfreader.readLine()) != null){
+                if (line.startsWith("format.tags.title=")) {
+                    soundName = line.substring("format.tags.title=".length());
+                    if(soundName.startsWith("\"") && soundName.endsWith("\"")){
+                        soundName = soundName.substring(1, soundName.length()-1);
+                    }
+                    break;
+                }
+            }
+        } catch (IOException e) {
+            throw new RuntimeException(e);
+        }
+        int exValue = process.waitFor();
+        if(exValue != 0){
+            throw new RuntimeException("ffprobe завершился с ошибкой: " + exValue);
+        }
+        return soundName != null ? soundName : "Unknown";
     }
 }
diff --git a/task02/src/com/example/task02/Task02Main.java b/task02/src/com/example/task02/Task02Main.java
index 750f7ba..2569fd3 100644
--- a/task02/src/com/example/task02/Task02Main.java
+++ b/task02/src/com/example/task02/Task02Main.java
@@ -1,7 +1,10 @@
 package com.example.task02;
 
+import java.io.File;
 import java.io.IOException;
-import java.nio.file.Path;
+import java.nio.file.*;
+import java.nio.file.attribute.BasicFileAttributes;
+import java.util.ArrayList;
 import java.util.List;
 
 public class Task02Main {
@@ -9,15 +12,27 @@ public static void main(String[] args) throws IOException, InterruptedException
         //здесь вы можете вручную протестировать ваше решение, вызывая реализуемый метод и смотря результат
         // например вот так:
 
-        /*
         System.out.println(listFiles(Paths.get("task02/src/main/resources/")));
-        */
 
     }
+    public static List<Path> listFiles(Path rootDir) {
+        List<Path> result = new ArrayList<>();
+        collectFiles(new File(rootDir.toString()), result);
+        return result;
+    }
 
-    public static List<Path> listFiles(Path rootDir) throws IOException, InterruptedException {
-        // your implementation here
-
-        return null;
+    private static void collectFiles(File dir, List<Path> result) {
+        if (dir.isDirectory()) {
+            File[] files = dir.listFiles(); // может вернуть null
+            if (files != null) {
+                for (File file : files) {
+                    if (file.isFile()) {
+                        result.add(file.toPath());
+                    } else if (file.isDirectory()) {
+                        collectFiles(file, result);
+                    }
+                }
+            }
+        }
     }
 }
diff --git a/task03/src/com/example/task03/SampleData.java b/task03/src/com/example/task03/SampleData.java
index 0654af5..70bbc0b 100644
--- a/task03/src/com/example/task03/SampleData.java
+++ b/task03/src/com/example/task03/SampleData.java
@@ -1,9 +1,10 @@
 package com.example.task03;
 
+import java.io.Serializable;
 import java.util.Date;
 import java.util.Objects;
 
-public class SampleData {
+public class SampleData implements Serializable {
     static final long serialVersionUID = 132706691457162967L;
 
     String name;
diff --git a/task03/src/com/example/task03/Task03Main.java b/task03/src/com/example/task03/Task03Main.java
index 740fff1..7ea7cf8 100644
--- a/task03/src/com/example/task03/Task03Main.java
+++ b/task03/src/com/example/task03/Task03Main.java
@@ -1,21 +1,24 @@
 package com.example.task03;
 
-import java.io.IOException;
-import java.io.InputStream;
+import java.io.*;
 
 public class Task03Main {
     public static void main(String[] args) throws IOException, ClassNotFoundException {
         //здесь вы можете вручную протестировать ваше решение, вызывая реализуемый метод и смотря результат
         // например вот так:
 
-        /*
         System.out.println(deserialize(new FileInputStream("task03/src/main/resources/example1.bin")));
-        */
 
     }
 
     public static SampleData deserialize(InputStream inputStream) throws IOException, ClassNotFoundException {
         // your implementation here
-        return null;
+        try {
+            ObjectInputStream obj = new ObjectInputStream(inputStream);
+            Object read = obj.readObject();
+            return (SampleData) read;
+        } catch (IOException e) {
+            throw new RuntimeException(e);
+        }
     }
 }