diff --git a/task01/src/com/example/task01/Task01Main.java b/task01/src/com/example/task01/Task01Main.java
index 5dfc11b0..7fcbcee8 100644
--- a/task01/src/com/example/task01/Task01Main.java
+++ b/task01/src/com/example/task01/Task01Main.java
@@ -1,20 +1,30 @@
 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";
+    public static String extractSoundName(File file) throws IOException, InterruptedException
+    {
+
+        ProcessBuilder pb = new ProcessBuilder();
+        pb.command("C:/Users/sajbu/Downloads/ffmpeg3/bin/ffprobe.exe", "-v", "error", "-of", "flat", "-show_format", file.getCanonicalPath());
+        Process p = pb.start();
+
+        try (BufferedReader reader = new BufferedReader(new InputStreamReader(p.getInputStream())))
+        {
+            String string = "";
+            while (!string.contains("format.tags.title"))
+            {
+                string = reader.readLine();
+            }
+            return string.substring(19).replace("\"","");
+        }
     }
-}
+}
\ No newline at end of file
diff --git a/task02/src/com/example/task02/Task02Main.java b/task02/src/com/example/task02/Task02Main.java
index 750f7bab..11b1c9cf 100644
--- a/task02/src/com/example/task02/Task02Main.java
+++ b/task02/src/com/example/task02/Task02Main.java
@@ -1,23 +1,25 @@
 package com.example.task02;
 
 import java.io.IOException;
+import java.nio.file.Files;
 import java.nio.file.Path;
+import java.nio.file.Paths;
+import java.util.ArrayList;
 import java.util.List;
+import java.util.stream.Stream;
 
 public class Task02Main {
     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) throws IOException, InterruptedException {
-        // your implementation here
 
-        return null;
+        List<Path> result = new ArrayList<>();
+        try(Stream<Path> paths = Files.walk(rootDir))
+        {
+            paths.filter(ins -> ins.toFile().isFile()).forEach(result::add);
+        }
+        return result;
     }
 }
diff --git a/task03/src/com/example/task03/SampleData.java b/task03/src/com/example/task03/SampleData.java
index 0654af50..e9074a87 100644
--- a/task03/src/com/example/task03/SampleData.java
+++ b/task03/src/com/example/task03/SampleData.java
@@ -1,23 +1,27 @@
 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;
     int value;
     Date date;
 
-    public SampleData(String name, int value, Date date) {
+    public SampleData(String name, int value, Date date)
+    {
         this.name = name;
         this.value = value;
         this.date = date;
     }
 
     @Override
-    public boolean equals(Object o) {
+    public boolean equals(Object o)
+    {
         if (this == o) return true;
         if (o == null || getClass() != o.getClass()) return false;
         SampleData that = (SampleData) o;
@@ -39,4 +43,4 @@ public String toString() {
                 ", date=" + date +
                 '}';
     }
-}
+}
\ No newline at end of file
diff --git a/task03/src/com/example/task03/Task03Main.java b/task03/src/com/example/task03/Task03Main.java
index 740fff14..951c82b6 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.FileInputStream;
 import java.io.IOException;
 import java.io.InputStream;
+import java.io.ObjectInputStream;
 
-public class Task03Main {
-    public static void main(String[] args) throws IOException, ClassNotFoundException {
+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 {
+    public static SampleData deserialize(InputStream inputStream) throws IOException, ClassNotFoundException
+    {
         // your implementation here
-        return null;
+        ObjectInputStream ois = new ObjectInputStream(inputStream);
+        return ((SampleData) ois.readObject());
     }
-}
+}
\ No newline at end of file