@Entity  
@OptimisticLock(type = OptimisticLockType.ALL)  
public class Account {  
    @Id  
    private Long id;  

    @OptimisticLock(excluded = true) // Не проверяется при обновлении  
    private String secretCode;  
}  

UPDATE account SET ... WHERE id = ? AND (secretCode IS NULL OR secretCode = ?)  

spring.jpa.properties.hibernate.optimistic_lock.strategy=all  

@ExceptionHandler(OptimisticLockException.class)  
public void handleConflict() { /* ... */ }  

@Entity  
@OptimisticLock(type = OptimisticLockType.ALL)  
public class Product {  
    @Version  
    private Long version; // Дополнительная проверка  
}  

@Entity  
@OptimisticLock(type = OptimisticLockType.DIRTY)  
public class User {  
    @OptimisticLock(excluded = true)  
    private LocalDateTime lastLogin;  
}  

public record Person(String name, int age) {}

Person person = new Person("Alice", 25);
System.out.println(person.name()); // Alice
System.out.println(person.age()); // 25
System.out.println(person); // Person[name=Alice, age=25]

public class Task210425 {
    public static void main(String[] args) {
        HashSet<String> set = new HashSet<>();
        set.add(new String("Java"));
        set.add(new String("Java"));
        set.add("Python");
        set.add("Python".intern());
        
        System.out.println(set.size());
    }
}