@OneToMany(targetEntity = Order.class)
private List<Order> orders;

@OneToMany(cascade = CascadeType.ALL)
private List<Order> orders;

@OneToMany(fetch = FetchType.EAGER)
private List<Order> orders;

@OneToMany(mappedBy = "customer")
private List<Order> orders;

@OneToMany(orphanRemoval = true)
private List<Order> orders;

@ManyToOne(optional = false)
private Customer customer;

@Entity
public class Customer {
    @OneToMany
    private List<Order> orders;
}

@Entity
public class Customer {
    @OneToMany(mappedBy = "customer")
    private List<Order> orders;
}

@Entity
public class Order {
    @ManyToOne
    @JoinColumn(name = "customer_id")
    private Customer customer;
}

class A1303 {
    void print() {
        System.out.println("A");
    }
}

class B1303 extends A1303 {
    void print() {
        System.out.println("B");
    }
}

class C1303 extends B1303 {
    void print() {
        super.print();
        System.out.println("C");
    }
}

public class Task130325 {
    public static void main(String[] args) {
        A1303 a = new C1303();
        a.print();
    }
}

@ManyToMany(targetEntity = Role.class)
private List<Role> roles;

@ManyToMany(cascade = CascadeType.ALL)
private List<Role> roles;

@ManyToMany(fetch = FetchType.EAGER)
private List<Role> roles;

@ManyToMany(mappedBy = "users")
private List<Role> roles;

@ManyToMany(orphanRemoval = true)
private List<Role> roles;

@Entity
public class User {
    @ManyToMany
    private List<Role> roles;
}

@Entity
public class User {
    @ManyToMany(mappedBy = "users")
    private List<Role> roles;
}

@Entity
public class Role {
    @ManyToMany
    @JoinTable(
        name = "user_role",
        joinColumns = @JoinColumn(name = "role_id"),
        inverseJoinColumns = @JoinColumn(name = "user_id")
    )
    private List<User> users;
}

@ManyToMany(cascade = CascadeType.ALL)
private List<Role> roles;

@ManyToMany(fetch = FetchType.LAZY)
private List<Role> roles;

@ManyToMany
@JoinTable(
    name = "user_role",
    joinColumns = @JoinColumn(name = "user_id"),
    inverseJoinColumns = @JoinColumn(name = "role_id")
)
private List<Role> roles;

@ManyToOne
@JoinColumn(name = "user_id", referencedColumnName = "id", nullable = false)
private User user;

import java.util.TreeMap;

public class Task140325 {
    public static void main(String[] args) {
        TreeMap<Integer, String> map = new TreeMap<>();
        map.put(5, "Five");
        map.put(2, "Two");
        map.put(8, "Eight");
        map.put(1, "One");
        System.out.println(map.higherKey(2) + map.lowerKey(5));
    }
}

@ManyToMany
@JoinTable(
    name = "user_role",
    joinColumns = @JoinColumn(name = "user_id"),
    inverseJoinColumns = @JoinColumn(name = "role_id")
)
private Set<Role> roles;