Java에서 양식 데이터의 충돌 해결 및 데이터 일관성을 처리하는 방법은 무엇입니까?

public class OptimisticLockExample {
    private int data;

    public synchronized void increment() {
        // 读取数据
        int value = data;
        
        // 模拟其他用户对数据进行修改
        try {
            Thread.sleep(1000);
        } catch (InterruptedException e) {
            e.printStackTrace();
        }
        
        // 修改数据并提交
        data = value + 1;
        System.out.println("Data incremented to " + data);
    }
}

public class PessimisticLockExample {
    private int data;
    private Lock lock = new ReentrantLock();

    public void increment() {
        // 加锁
        lock.lock();
        
        try {
            // 读取数据
            int value = data;
            
            // 模拟其他用户对数据进行修改
            try {
                Thread.sleep(1000);
            } catch (InterruptedException e) {
                e.printStackTrace();
            }
            
            // 修改数据并提交
            data = value + 1;
            System.out.println("Data incremented to " + data);
        } finally {
            // 释放锁
            lock.unlock();
        }
    }
}

public class DataValidationExample {
    public static boolean validateEmail(String email) {
        String regex = "^[A-Za-z0-9]+([._%+-]?[A-Za-z0-9]+)*@[A-Za-z0-9]+(\.[A-Za-z]{2,})+$";
        return email.matches(regex);
    }

    public static void main(String[] args) {
        String email = "example@example.com";
        boolean isValid = validateEmail(email);
        System.out.println("Email " + email + " is valid: " + isValid);
    }
}

public class DataPersistenceExample {
    public static void saveData(String name, int age) {
        try {
            // 建立数据库连接
            Connection conn = DriverManager.getConnection("jdbc:mysql://localhost:3306/mydb", "username", "password");

            // 创建SQL语句
            String sql = "INSERT INTO users (name, age) VALUES (?, ?)";
            PreparedStatement stmt = conn.prepareStatement(sql);

            // 设置参数
            stmt.setString(1, name);
            stmt.setInt(2, age);

            // 执行SQL语句
            int rows = stmt.executeUpdate();

            // 关闭连接
            stmt.close();
            conn.close();

            System.out.println("Data saved successfully. " + rows + " row(s) affected.");
        } catch (SQLException e) {
            e.printStackTrace();
        }
    }

    public static void main(String[] args) {
        String name = "John";
        int age = 25;
        saveData(name, age);
    }
}