Work error

04-java_intro/src/AccountBank.java

@@ -0,0 +1,166 @@
+import java.util.ArrayList;
+import java.util.HashMap;
+import java.util.List;
+import java.util.Map;
+import java.util.Objects;
+
+class Bank {
+    private Map<Client, List<Account>> clientAccountsMap;
+    private Map<Account, Client> accountClientMap;
+
+    public Bank() {
+        clientAccountsMap = new HashMap<>();
+        accountClientMap = new HashMap<>();
+    }
+
+    public void addClient(Client client) {
+        clientAccountsMap.put(client, new ArrayList<>());
+    }
+
+    public void addAccount(Client client, Account account) {
+        List<Account> clientAccounts = clientAccountsMap.get(client);
+        if (clientAccounts != null) {
+            clientAccounts.add(account);
+            accountClientMap.put(account, client);
+        }
+    }
+
+    public List<Account> getAccounts(Client client) {
+        return clientAccountsMap.getOrDefault(client, new ArrayList<>());
+    }
+
+    public Client findClient(Account account) {
+        return accountClientMap.get(account);
+    }
+}
+
+class Client {
+    private String name;
+    private int age;
+
+    public Client(String name, int age) {
+        this.name = name;
+        this.age = age;
+    }
+    public String getName() {
+        return name;
+    }
+
+    public void setName(String name) {
+        this.name = name;
+    }
+
+    public int getAge() {
+        return age;
+    }
+
+    public void setAge(int age) {
+        this.age = age;
+    }
+
+    @Override
+    public boolean equals(Object obj) {
+        if (this == obj) {
+            return true;
+        }
+        if (obj == null || getClass() != obj.getClass()) {
+            return false;
+        }
+        Client client = (Client) obj;
+        return age == client.age && name.equals(client.name);
+    }
+
+    @Override
+    public int hashCode() {
+        return Objects.hash(name, age);
+    }
+}
+
+class Account {
+    private int accountNumber;
+    private double balance;
+
+    public Account(int accountNumber, double balance) {
+        this.accountNumber = accountNumber;
+        this.balance = balance;
+    }
+
+    public int getAccountNumber() {
+        return accountNumber;
+    }
+
+    public void setAccountNumber(int accountNumber) {
+        this.accountNumber = accountNumber;
+    }
+
+    public double getBalance() {
+        return balance;
+    }
+
+    public void setBalance(double balance) {
+        this.balance = balance;
+    }
+
+    @Override
+    public boolean equals(Object obj) {
+        if (this == obj) {
+            return true;
+        }
+        if (obj == null || getClass() != obj.getClass()) {
+            return false;
+        }
+        Account account = (Account) obj;
+        return accountNumber == account.accountNumber;
+    }
+
+    @Override
+    public int hashCode() {
+        return Objects.hash(accountNumber);
+    }
+}
+
+public class AccountBank {
+    public static void main(String[] args) {
+        Bank bank = new Bank();
+
+        // Создание клиентов
+        Client client1 = new Client("Андрей", 31);
+        Client client2 = new Client("Милена", 24);
+        Client client3 = new Client("Алексей", 40);
+
+        // Добавление в банк
+        bank.addClient(client1);
+        bank.addClient(client2);
+        bank.addClient(client3);
+
+        // Создание счетов
+        Account account1 = new Account(1001, 500_000);
+        Account account2 = new Account(1002, 100_000);
+        Account account3 = new Account(2001, 750_000);
+        Account account4 = new Account(2002, 20_000);
+        Account account5 = new Account(3001, 100_000);
+
+        // Привязка счетов к клиентам
+        bank.addAccount(client1, account1);
+        bank.addAccount(client1, account2);
+        bank.addAccount(client2, account3);
+        bank.addAccount(client2, account4);
+        bank.addAccount(client3, account5);
+
+        // Поиск счетов по клиенту
+        List<Account> client1Accounts = bank.getAccounts(client1);
+        System.out.println("Счета клиента " + client1.getName() + ":");
+        for (Account account : client1Accounts) {
+            System.out.println("Номер счета: " + account.getAccountNumber() + ", Баланс: " + account.getBalance());
+        }
+
+        // Поиск клиента по счету
+        account3 = new Account(2001, 750_000);
+        Client account3Client = bank.findClient(account3);
+        if (account3Client != null) {
+            System.out.println("Клиент, чей счет №" + account3.getAccountNumber() + ": " + account3Client.getName());
+        } else {
+            System.out.println("Счет " + account3.getAccountNumber() + " не привязан к клиенту.");
+        }
+    }
+}

L06-if_loops_arrays/src/ru/otus/java/homework/Main.java

@@ -0,0 +1,49 @@
+import java.io.*;
+
+class Resource implements AutoCloseable {
+    public void open() throws IOException {
+        System.out.println("Открытие ресурса");
+        throw new IOException("Ошибка при открытии ресурса");
+    }
+
+    @Override
+    public void close() throws Exception {
+        System.out.println("Закрытие ресурса");
+        throw new Exception("Ошибка при закрытии ресурса");
+    }
+}
+
+class ResourceProcessor {
+    public void process() throws CustomException {
+        try (Resource resource = new Resource()) {
+            resource.open();
+        } catch (IOException e) {
+            System.out.println("Ошибка: " + e.getMessage());
+            throw new CustomException("Ошибка обработки ресурса", e);
+        } catch (Exception e) {
+            System.out.println("Ошибка при закрытии ресурса: " + e.getMessage());
+            throw new CustomException("Ошибка при закрытии ресурса", e);
+        }
+    }
+}
+
+class CustomException extends Exception {
+    public CustomException(String message, Throwable cause) {
+        super(message, cause);
+    }
+}
+
+public class Main {
+    public static void main(String[] args) {
+        try {
+            ResourceProcessor processor = new ResourceProcessor();
+            processor.process();
+        } catch (CustomException e) {
+            System.out.println("Произошла ошибка при обработке ресурса: " + e.getMessage());
+            Throwable cause = e.getCause();
+            if (cause != null) {
+                System.out.println("Причина: " + cause.getMessage());
+            }
+        }
+    }
+}