Hibernate lifecycle callbacks, how to use it correctly?

Question

Hibernate

When initializing the Company object and persistence operation, my callbacks don't work.. what could be the problem?
What is missing in this code? Any advice.. Help Company.class
:

@Entity
@Table(name = "companies")
@EntityListeners(CompanyListener.class)
public class Company {
  
  public Company() {}

  public User getCompany_user() {
    return company_user;
  }

  public void setCompany_user(User company_user) {
    this.company_user = company_user;
  }

  @Transient
  private User company_user;

  public Company(long id ,String compName, String password, String email) {
    setId(id);
    setCompName(compName);
    setPassword(password);
    setEmail(email);
  }

  public Collection<Coupon> getCompany_coupons() {
    return company_coupons;
  }

  public void setCompany_coupons(Collection<Coupon> company_coupons) {
    this.company_coupons = company_coupons;
  }

  @OneToMany(cascade = CascadeType.ALL , fetch = FetchType.LAZY)
  @JoinTable(name = "company_coupons" , inverseJoinColumns = @JoinColumn(name = "COUPON_ID") , joinColumns = @JoinColumn(name = "COMPANY_ID"))
  private Collection <Coupon> company_coupons;

  @Override
  public boolean equals(Object o) {
    if (this == o) return true;
    if (o == null || getClass() != o.getClass()) return false;

    Company company = (Company) o;

    if (id != company.id) return false;
    if (!compName.equals(company.compName)) return false;
    if (!password.equals(company.password)) return false;
    return email.equals(company.email);
  }

  @Override
  public int hashCode() {
    int result = (int) (id ^ (id >>> 32));
    result = 31 * result + compName.hashCode();
    result = 31 * result + password.hashCode();
    result = 31 * result + email.hashCode();
    return result;
  }

  @Id
  @Column(name = "COMPANY_ID")
  private long id;

  @Column(name = "COMPANY_NAME" , unique = true , nullable = false)
  private String compName;
  @Column(name = "COMPANY_PASSWORD" , unique = true , nullable = false)
  private String password;
  @Column(name = "COMPANY_EMAIL" , unique = true , nullable = false)
  private String email;

  @Override
  public String toString() {
    return "Company [id=" + id + ", compName=" + compName + ", password=" + password + ", email=" + email +"]";
  }

  public long getId() {
    return id;
  }

  public void setId(long id) {
    this.id = id;
  }

  public String getCompName() {
    return compName;
  }

  public void setCompName(String compName) {
    this.compName = compName;
  }

  public String getPassword() {
    return password;
  }

  public void setPassword(String password) {
    this.password = password;
  }

  public String getEmail() {
    return email;
  }

  public void setEmail(String email) {
    this.email = email;
  }

}

CompanyListener.class

public class CompanyListener {

    @PostPersist
    public void persistListener(){
        System.out.println();
        System.out.println("Post persist Listener invoked!");
    }

    @PostUpdate
    public void updateListener(){
        System.out.println();
        System.out.println("Update Listener invoked!");
    }

    @PostRemove
    public void removeListener(){
        System.out.println();
        System.out.println("Remove Listener invoked!");
    }

    private String getCurrentTime(){
        return LocalDateTime.now().toString();
    }
}