homework1 sorry for being so late

src/main/java/lesson2/hw/ArrayDataException.java

@@ -1,5 +1,12 @@
 package lesson2.hw;
 
-public class ArrayDataException extends Exception {
-    // TODO: 14.04.2020  
+public class ArrayDataException extends ClassCastException {
+    // TODO: 14.04.2020
+    public ArrayDataException() {
+        super();
+    }
+
+    public ArrayDataException(String s) {
+        super(s);
+    }
 }

src/main/java/lesson2/hw/ArraySizeException.java

@@ -1,5 +1,8 @@
 package lesson2.hw;
 
-public class ArraySizeException extends Exception {
-    // TODO: 14.04.2020  
+public class ArraySizeException extends RuntimeException {
+    @Override
+    public String getMessage() {
+        return "Incorrect size";
+    }
 }

src/main/java/lesson2/hw/ArrayUtils.java

@@ -2,9 +2,6 @@
 
 public class ArrayUtils {
 
-    public long arraySum(Object [][] array) {
-        // TODO: 14.04.2020
-        return 0;
-    }
+
 
 }

src/main/java/lesson2/hw/Main.java

@@ -1,8 +1,42 @@
 package lesson2.hw;
 
+import java.util.Random;
+import java.util.Scanner;
+
 public class Main {
     public static void main(String[] args) {
         // TODO: 14.04.2020
-        // протестируйте arraySum здесь
+        Object[][] arr = new Object[4][4];
+        for (int i = 0; i < 4; i++) {
+            arr[i] = new Object[]{7, 3, "ty", 1.33};
+        }
+        System.out.println(arraySum(arr));
     }
+    public static int arraySum(Object [][] array) {
+        // TODO: 14.04.2020
+        int sum = 0;
+        try {
+            if (array[1].length > 4 || array.length > 4) {
+                throw new ArraySizeException();
+            }
+        }
+        catch (ArrayDataException e){
+            System.out.println("Неверный размер матрицы");
+        }
+
+        for (int i = 0; i < 4; i++) {
+            for (int j = 0; j < 4; j++) {
+                try {
+                    sum += ((int) array[i][j]);
+                }
+                catch(ClassCastException e){
+                    System.out.println("Неверный тип данных в ячейке массива под индексом ["+i+"]["+j+"]");
+                }
+            }
+        }
+
+        return sum;
+    }
+
+
 }

src/main/java/lesson6/Client.java

@@ -0,0 +1,43 @@
+package lesson6;
+
+
+import java.io.DataInputStream;
+import java.io.DataOutputStream;
+import java.io.IOException;
+import java.net.Socket;
+import java.util.Scanner;
+
+public class Client {
+
+    public static void main(String[] args) throws IOException {
+        Socket socket = new Socket("localhost", 80);
+        DataInputStream in = new DataInputStream(socket.getInputStream());
+        DataOutputStream out = new DataOutputStream(socket.getOutputStream());
+        Scanner input = new Scanner(System.in);
+
+        Thread receiveServerMessageThread = new Thread(() -> {
+            while (true) {
+                try {
+                    String serverMessage = in.readUTF();
+                    System.out.println("Message from server: " + serverMessage);
+                } catch (Exception e) {
+                    e.printStackTrace();
+                }
+            }
+        });
+        receiveServerMessageThread.start();
+
+        while (true) {
+            String message = input.nextLine();
+            if (message.equals("quit")) {
+                System.out.println("Finished!");
+                out.writeUTF(message);
+                out.flush();
+                break;
+            }
+            out.writeUTF(message);
+            out.flush();
+        }
+
+    }
+}

src/main/java/lesson6/Server.java

@@ -0,0 +1,39 @@
+package lesson6;
+
+import java.io.*;
+import java.net.ServerSocket;
+import java.net.Socket;
+import java.util.Scanner;
+
+public class Server {
+
+    public static void main(String[] args) throws IOException {
+        ServerSocket server = new ServerSocket(80);
+        Socket con = server.accept();
+        System.out.println("Connected " + con.getInetAddress());
+        DataInputStream in = new DataInputStream(con.getInputStream());
+        DataOutputStream out = new DataOutputStream(con.getOutputStream());
+        Scanner input = new Scanner(System.in);
+        Thread receiveClientMessageThread = new Thread(() -> {
+            while (true) {
+                try {
+                    String clientMessage = in.readUTF();
+                    if (clientMessage.equals("quit")) {
+                        System.out.println("Shut down");
+                        return;
+                    }
+                    System.out.println("Message from client: " + clientMessage);
+                } catch (Exception e) {
+                    e.printStackTrace();
+                }
+            }
+        });
+        receiveClientMessageThread.start();
+
+        while (true) {
+            String serverMessage = input.nextLine();
+            out.writeUTF(serverMessage);
+            out.flush();
+        }
+    }
+}