diff --git a/src/ru/gb/Dmitrieva/HomeWorkApp/Lesson_1/Actions.java b/src/ru/gb/Dmitrieva/HomeWorkApp/Lesson_1/Actions.java
new file mode 100644
index 0000000..1ef3f1d
--- /dev/null
+++ b/src/ru/gb/Dmitrieva/HomeWorkApp/Lesson_1/Actions.java
@@ -0,0 +1,11 @@
+package ru.gb.Dmitrieva.HomeWorkApp.Lesson_1;
+
+public interface Actions {
+    void run();
+
+    void jump();
+
+    int getRunDistance();
+
+    int getJumpHeight();
+}
diff --git a/src/ru/gb/Dmitrieva/HomeWorkApp/Lesson_1/Barrier.java b/src/ru/gb/Dmitrieva/HomeWorkApp/Lesson_1/Barrier.java
new file mode 100644
index 0000000..ecc685e
--- /dev/null
+++ b/src/ru/gb/Dmitrieva/HomeWorkApp/Lesson_1/Barrier.java
@@ -0,0 +1,15 @@
+package ru.gb.Dmitrieva.HomeWorkApp.Lesson_1;
+
+public abstract class Barrier {
+    private String name;
+
+    public Barrier(String name) {
+        this.name = name;
+    }
+
+    protected abstract boolean moving(Actions var1);
+
+    public String getName() {
+        return this.name;
+    }
+}
diff --git a/src/ru/gb/Dmitrieva/HomeWorkApp/Lesson_1/Cat.java b/src/ru/gb/Dmitrieva/HomeWorkApp/Lesson_1/Cat.java
new file mode 100644
index 0000000..d85890d
--- /dev/null
+++ b/src/ru/gb/Dmitrieva/HomeWorkApp/Lesson_1/Cat.java
@@ -0,0 +1,32 @@
+package ru.gb.Dmitrieva.HomeWorkApp.Lesson_1;
+
+import java.util.Random;
+
+public class Cat implements Actions {
+    private String name;
+    private int runDistance;
+    private int jumpHeight;
+
+    public Cat(String name) {
+        this.name = name;
+        Random rand = new Random();
+        this.runDistance = rand.nextInt(10);
+        this.jumpHeight = rand.nextInt(10);
+    }
+
+    public void run() {
+        System.out.printf("Cat %s is running %d m\n", this.name, this.getRunDistance());
+    }
+
+    public void jump() {
+        System.out.printf("Cat %s is jumping %d m\n", this.name, this.getJumpHeight());
+    }
+
+    public int getRunDistance() {
+        return this.runDistance;
+    }
+
+    public int getJumpHeight() {
+        return this.jumpHeight;
+    }
+}
diff --git a/src/ru/gb/Dmitrieva/HomeWorkApp/Lesson_1/Human.java b/src/ru/gb/Dmitrieva/HomeWorkApp/Lesson_1/Human.java
new file mode 100644
index 0000000..b6ad224
--- /dev/null
+++ b/src/ru/gb/Dmitrieva/HomeWorkApp/Lesson_1/Human.java
@@ -0,0 +1,32 @@
+package ru.gb.Dmitrieva.HomeWorkApp.Lesson_1;
+
+import java.util.Random;
+
+public class Human implements Actions {
+    private String name;
+    private int runDistance;
+    private int jumpHeight;
+
+    public Human(String name) {
+        this.name = name;
+        Random rand = new Random();
+        this.runDistance = rand.nextInt(10);
+        this.jumpHeight = rand.nextInt(10);
+    }
+
+    public void run() {
+        System.out.printf("Human %s is running %d m\n", this.name, this.getRunDistance());
+    }
+
+    public void jump() {
+        System.out.printf("Human %s is jumping %d m\n", this.name, this.getJumpHeight());
+    }
+
+    public int getRunDistance() {
+        return this.runDistance;
+    }
+
+    public int getJumpHeight() {
+        return this.jumpHeight;
+    }
+}
diff --git a/src/ru/gb/Dmitrieva/HomeWorkApp/Lesson_1/JustDoIt.java b/src/ru/gb/Dmitrieva/HomeWorkApp/Lesson_1/JustDoIt.java
new file mode 100644
index 0000000..4244b7f
--- /dev/null
+++ b/src/ru/gb/Dmitrieva/HomeWorkApp/Lesson_1/JustDoIt.java
@@ -0,0 +1,47 @@
+package ru.gb.Dmitrieva.HomeWorkApp.Lesson_1;
+
+import java.util.Random;
+
+public class JustDoIt {
+    public static void main(String[] args) {
+
+        Barrier[] barriers = new Barrier[6];
+        int i;
+        for(i = 0; i < barriers.length; ++i) {
+            Random rand = new Random();
+            boolean isRoad = rand.nextBoolean();
+            if (isRoad) {
+                barriers[i] = new Road(i + 1 + " is Road");
+            } else {
+                barriers[i] = new Wall(i + 1 + " is Wall");
+            }
+        }
+
+        for(i = 0; i < generateParticipants().length; ++i) {
+            boolean result = true;
+
+            for(int j = 0; j < barriers.length; ++j) {
+                result = barriers[j].moving(generateParticipants()[i]);
+                if (!result) {
+                    break;
+                }
+            }
+
+            if (result) {
+                System.out.println("Success!!");
+            } else {
+                System.out.println("Fail and retires from the race!!");
+            }
+        }
+
+    }
+
+    private static Actions[] generateParticipants() {
+        Actions [] actions = new Actions []{
+                new Human("Peter"),
+                new Robot("00XX001Z111"),
+                new Cat("Luna")
+                };
+        return actions;
+    }
+}
diff --git a/src/ru/gb/Dmitrieva/HomeWorkApp/Lesson_1/Road.java b/src/ru/gb/Dmitrieva/HomeWorkApp/Lesson_1/Road.java
new file mode 100644
index 0000000..5473eb0
--- /dev/null
+++ b/src/ru/gb/Dmitrieva/HomeWorkApp/Lesson_1/Road.java
@@ -0,0 +1,23 @@
+package ru.gb.Dmitrieva.HomeWorkApp.Lesson_1;
+
+import java.util.Random;
+
+public class Road extends Barrier {
+    private int length;
+
+    public Road(String name) {
+        super(name);
+        Random rand = new Random();
+        this.length = rand.nextInt(10);
+    }
+
+    public int getLength() {
+        return this.length;
+    }
+
+    protected boolean moving(Actions actions) {
+        System.out.printf("The barrier number %s and it's length: %d m\n", super.getName(), this.length);
+        actions.run();
+        return this.getLength() <= actions.getRunDistance();
+    }
+}
diff --git a/src/ru/gb/Dmitrieva/HomeWorkApp/Lesson_1/Robot.java b/src/ru/gb/Dmitrieva/HomeWorkApp/Lesson_1/Robot.java
new file mode 100644
index 0000000..7a986ff
--- /dev/null
+++ b/src/ru/gb/Dmitrieva/HomeWorkApp/Lesson_1/Robot.java
@@ -0,0 +1,32 @@
+package ru.gb.Dmitrieva.HomeWorkApp.Lesson_1;
+
+import java.util.Random;
+
+public class Robot implements Actions {
+    private String name;
+    private int runDistance;
+    private int jumpHeight;
+
+    public Robot(String name) {
+        this.name = name;
+        Random rand = new Random();
+        this.runDistance = rand.nextInt(10);
+        this.jumpHeight = rand.nextInt(10);
+    }
+
+    public void run() {
+        System.out.printf("Robot %s is running %d m\n", this.name, this.getRunDistance());
+    }
+
+    public void jump() {
+        System.out.printf("Robot %s is jumping %d m\n", this.name, this.getJumpHeight());
+    }
+
+    public int getRunDistance() {
+        return this.runDistance;
+    }
+
+    public int getJumpHeight() {
+        return this.jumpHeight;
+    }
+}
\ No newline at end of file
diff --git a/src/ru/gb/Dmitrieva/HomeWorkApp/Lesson_1/Wall.java b/src/ru/gb/Dmitrieva/HomeWorkApp/Lesson_1/Wall.java
new file mode 100644
index 0000000..aaa1af9
--- /dev/null
+++ b/src/ru/gb/Dmitrieva/HomeWorkApp/Lesson_1/Wall.java
@@ -0,0 +1,23 @@
+package ru.gb.Dmitrieva.HomeWorkApp.Lesson_1;
+
+import java.util.Random;
+
+public class Wall extends Barrier {
+    private int heigth;
+
+    public Wall(String name) {
+        super(name);
+        Random rand = new Random();
+        this.heigth = rand.nextInt(10);
+    }
+
+    public int getHeigth() {
+        return this.heigth;
+    }
+
+    protected boolean moving(Actions actions) {
+        System.out.printf("The barrier number %s and it's height: %d m\n", super.getName(), this.heigth);
+        actions.jump();
+        return this.getHeigth() <= actions.getJumpHeight();
+    }
+}
\ No newline at end of file
diff --git a/src/ru/gb/Dmitrieva/HomeWorkApp/Lesson_2/ArrayCheck.java b/src/ru/gb/Dmitrieva/HomeWorkApp/Lesson_2/ArrayCheck.java
new file mode 100644
index 0000000..bc148bc
--- /dev/null
+++ b/src/ru/gb/Dmitrieva/HomeWorkApp/Lesson_2/ArrayCheck.java
@@ -0,0 +1,53 @@
+package ru.gb.Dmitrieva.HomeWorkApp.Lesson_2;
+
+
+public class ArrayCheck {
+    public static void main(String[] args) {
+        String[][] strDataWrong = {
+                {"1", "2", "3", "4"},
+                {"2", "2", "7", "3"},
+                {"1", "seven", "2", "2"},
+                {"2", "2", "2", "2"}
+
+        };
+        getArraySum(strDataWrong);
+
+        String[][] strSizeWrong = {
+                {"1", "2", "3", "4"},
+                {"2", "2", "7", "3"},
+                {"1", "5", "2", "2"},
+                {"2", "2", "2", "2"},
+                {"2", "2", "2", "2"}
+
+        };
+        getArraySum(strSizeWrong);
+
+    }
+
+    private static void getArraySum(String[][] str) {
+        if (str.length != 4) {
+            throw new MyArraySizeException();
+        }
+        for (int i = 0; i < str.length; i++) {
+        int sum = 0;
+            {
+           for (int j = 0; j < str[i].length; j++) {
+                    inputDate(str[i][j], i, j);
+                    sum += Integer.parseInt(str[i][j]);
+                }
+        }
+            System.out.println("Результат: ");
+            System.out.println(sum);
+        }
+
+
+    }
+
+    private static void inputDate(String str, int x, int y) {
+        for (int i = 1; i < str.length(); i++) {
+            if (str.charAt(i) < '0' || str.charAt(i) > '9') {
+                throw new MyArrayDataException(x+1, y+1);
+            }
+        }
+    }
+}
diff --git a/src/ru/gb/Dmitrieva/HomeWorkApp/Lesson_2/MyArrayDataException.java b/src/ru/gb/Dmitrieva/HomeWorkApp/Lesson_2/MyArrayDataException.java
new file mode 100644
index 0000000..5c96a72
--- /dev/null
+++ b/src/ru/gb/Dmitrieva/HomeWorkApp/Lesson_2/MyArrayDataException.java
@@ -0,0 +1,7 @@
+package ru.gb.Dmitrieva.HomeWorkApp.Lesson_2;
+
+public class MyArrayDataException extends NumberFormatException {
+    public MyArrayDataException(int i, int j){
+        super("Не удалось преобразовать элемент массива к числу. В ячейке (" + i + "," + j + ") не цифра.");
+    }
+}
diff --git a/src/ru/gb/Dmitrieva/HomeWorkApp/Lesson_2/MyArraySizeException.java b/src/ru/gb/Dmitrieva/HomeWorkApp/Lesson_2/MyArraySizeException.java
new file mode 100644
index 0000000..35fe665
--- /dev/null
+++ b/src/ru/gb/Dmitrieva/HomeWorkApp/Lesson_2/MyArraySizeException.java
@@ -0,0 +1,7 @@
+package ru.gb.Dmitrieva.HomeWorkApp.Lesson_2;
+
+public class MyArraySizeException extends ArrayIndexOutOfBoundsException {
+    public MyArraySizeException(){
+        super("Массив не формата 4х4");
+    }
+}
diff --git a/src/ru/gb/Dmitrieva/HomeWorkApp/Lesson_3/Apple.java b/src/ru/gb/Dmitrieva/HomeWorkApp/Lesson_3/Apple.java
new file mode 100644
index 0000000..173962d
--- /dev/null
+++ b/src/ru/gb/Dmitrieva/HomeWorkApp/Lesson_3/Apple.java
@@ -0,0 +1,7 @@
+package ru.gb.Dmitrieva.HomeWorkApp.Lesson_3;
+
+public class Apple extends Fruit{
+    public Apple() {
+        weight = 1.0;
+    }
+}
diff --git a/src/ru/gb/Dmitrieva/HomeWorkApp/Lesson_3/Box.java b/src/ru/gb/Dmitrieva/HomeWorkApp/Lesson_3/Box.java
new file mode 100644
index 0000000..2243159
--- /dev/null
+++ b/src/ru/gb/Dmitrieva/HomeWorkApp/Lesson_3/Box.java
@@ -0,0 +1,30 @@
+package ru.gb.Dmitrieva.HomeWorkApp.Lesson_3;
+
+import java.util.ArrayList;
+
+public class Box<T extends Fruit> {
+    private ArrayList<T> fruitList = new ArrayList<>();
+
+    public void addFruit(T fruit){
+        this.fruitList.add(fruit);
+        if (fruitList.isEmpty());
+    }
+    
+    public double getWeight(){
+        int count = fruitList.size();
+        if (count==0) 
+            return 0;
+        return fruitList.get(0).getWeight()*count;
+    }
+
+    public boolean compare(Box box){
+        return this.getWeight()==box.getWeight();
+    }
+
+    public void pourOverTo(Box<T> destBox){
+        for (T fruit : fruitList){
+            destBox.addFruit(fruit);
+        }
+        fruitList.clear();
+    }
+}
diff --git a/src/ru/gb/Dmitrieva/HomeWorkApp/Lesson_3/Fruit.java b/src/ru/gb/Dmitrieva/HomeWorkApp/Lesson_3/Fruit.java
new file mode 100644
index 0000000..6fd80af
--- /dev/null
+++ b/src/ru/gb/Dmitrieva/HomeWorkApp/Lesson_3/Fruit.java
@@ -0,0 +1,9 @@
+package ru.gb.Dmitrieva.HomeWorkApp.Lesson_3;
+
+public abstract class Fruit {
+    double weight;
+
+    public double getWeight(){
+        return weight;
+    };
+}
diff --git a/src/ru/gb/Dmitrieva/HomeWorkApp/Lesson_3/Main.java b/src/ru/gb/Dmitrieva/HomeWorkApp/Lesson_3/Main.java
new file mode 100644
index 0000000..b9a636a
--- /dev/null
+++ b/src/ru/gb/Dmitrieva/HomeWorkApp/Lesson_3/Main.java
@@ -0,0 +1,59 @@
+package ru.gb.Dmitrieva.HomeWorkApp.Lesson_3;
+
+import java.util.ArrayList;
+import java.util.Arrays;
+
+public class Main {
+    public static void main(String[] args) {
+        //Создаем массив
+        System.out.println("Магия уровня 1");
+        Integer[] arr = new Integer[]{1, 2, 3, 4, 5};
+        String[] arr2 = new String[]{"a", "b", "c", "d", "e"};
+        System.out.println(Arrays.toString(arr));
+        swap(arr, 0, 1);
+        System.out.println(Arrays.toString(arr));
+
+        System.out.println(Arrays.toString(arr2));
+        swap(arr2, 0, 4);
+        System.out.println(Arrays.toString(arr2));
+
+        //Операции с массивом
+        System.out.println("\nМагия уровня 2");
+        ArrayList<String> arrayList = toArrayList(arr2);
+        System.out.println(arrayList);
+
+        //Оперции с коробками
+        System.out.println("\nМагия уровня 3");
+        Box<Apple> appleBox1 = new Box<>();
+        Box<Apple> appleBox2 = new Box<>();
+        Box<Orange> orangeBox1 = new Box<>();
+        for (int i = 0; i < 10; i++) {
+            appleBox1.addFruit(new Apple());
+            orangeBox1.addFruit(new Orange());
+        }
+        for (int i = 0; i < 5; i++) {
+            appleBox2.addFruit(new Apple());
+        }
+        System.out.println("Масса первой коробки с яблоками: " + appleBox1.getWeight());
+        System.out.println("Масса второй коробки с яблоками: " + appleBox2.getWeight());
+        System.out.println("Масса коробки с апельсинами: " + orangeBox1.getWeight());
+        System.out.println("Результат сравнения 1й коробки с яблоками и коробки с апельсинами: "+appleBox1.compare(orangeBox1));
+
+        System.out.println("\nПересыпаем из второй коробки в первую...\n");
+        appleBox2.pourOverTo(appleBox1);
+        System.out.println("Масса первой коробки с яблоками: " + appleBox1.getWeight());
+        System.out.println("Масса второй коробки с яблоками: " + appleBox2.getWeight());
+        System.out.println("Масса коробки с апельсинами: " + orangeBox1.getWeight());
+        System.out.println("Результат сравнения 1й коробки с яблоками и коробки с апельсинами: "+appleBox1.compare(orangeBox1));
+    }
+
+    static void swap(Object[] arr, int num1, int num2) {
+        Object buf = arr[num1];
+        arr[num1] = arr[num2];
+        arr[num2] = buf;
+    }
+
+    static <T> ArrayList<T> toArrayList(T[] arr) {
+        return new ArrayList<T>(Arrays.asList(arr));
+    }
+}
diff --git a/src/ru/gb/Dmitrieva/HomeWorkApp/Lesson_3/Orange.java b/src/ru/gb/Dmitrieva/HomeWorkApp/Lesson_3/Orange.java
new file mode 100644
index 0000000..ed86518
--- /dev/null
+++ b/src/ru/gb/Dmitrieva/HomeWorkApp/Lesson_3/Orange.java
@@ -0,0 +1,8 @@
+package ru.gb.Dmitrieva.HomeWorkApp.Lesson_3;
+
+public class Orange extends Fruit
+{
+    public Orange() {
+        weight = 1.5;
+    }
+}