Creating a role in a role - mysql

Question

I made a spring boot user management app and every time I update the user, the role doesn't overwrite.
Like this: roles=[Role{name='Role{name='ROLE_USER'}'}]}
roles=[Role{name='Role{name='Role{name='ROLE_USER'}'}'}]}
What can I change in my code to be just a Role;
User.class :
`
package com.webusermanagement.entity;
import javax.persistence.*;
import java.util.Collection;
#Entity
#Table(name="user")
public class User {
#Id
#GeneratedValue(strategy = GenerationType.IDENTITY)
#Column(name = "id")
private Long id;
#Column(name = "username")
private String username;
#Column(name = "password")
private String password;
#Column(name="first_name")
private String firstName;
#Column(name="last_name")
private String lastName;
#Column(name = "email")
private String email;
#Column(name="enabled")
private Boolean enabled;
#ManyToMany(fetch = FetchType.LAZY, cascade = CascadeType.ALL)
#JoinTable(name = "users_roles",
joinColumns = #JoinColumn(name = "user_id"),
inverseJoinColumns = #JoinColumn(name = "role_id"))
private Collection<Role> roles;
public User(){}
public User(String username, String password, String firstName, String lastName, boolean enabled, Collection<Role> roles) {
this.username = username;
this.password = password;
this.firstName = firstName;
this.lastName = lastName;
this.enabled = enabled;
this.roles = roles;
}
public User(String username, String password, String firstName, String lastName, boolean enabled) {
this.username = username;
this.password = password;
this.firstName = firstName;
this.lastName = lastName;
this.enabled = enabled;
}
public User(String username, String password, Collection<Role> roles) {
this.username = username;
this.password = password;
this.roles = roles;
}
public Long getId() {
return id;
}
public void setId(Long id) {
this.id = id;
}
public String getUsername() {
return username;
}
public void setUsername(String username) {
this.username = username;
}
public String getPassword() {
return password;
}
public void setPassword(String password) {
this.password = password;
}
public String getFirstName() {
return firstName;
}
public void setFirstName(String firstName) {
this.firstName = firstName;
}
public String getLastName() {
return lastName;
}
public void setLastName(String lastName) {
this.lastName = lastName;
}
public boolean isEnabled() {
return enabled;
}
public void setEnabled(boolean enabled) {
this.enabled = enabled;
}
public Collection<Role> getRoles() {
return roles;
}
public void setRoles(Collection<Role> roles) {
this.roles = roles;
}
public String getEmail() {
return email;
}
public void setEmail(String email) {
this.email = email;
}
#Override
public String toString() {
return "User{" +
"id=" + id +
", username='" + username + '\'' +
", password='" + password + '\'' +
", firstName='" + firstName + '\'' +
", lastName='" + lastName + '\'' +
", email='" + email + '\'' +
", enabled=" + enabled +
", roles=" + roles +
'}';
}
}
t`
Role.class:
`
package com.webusermanagement.entity;
import javax.persistence.*;
#Entity
#Table(name = "role")
public class Role {
#Id
#GeneratedValue(strategy = GenerationType.IDENTITY)
#Column(name = "id")
private Integer id;
#Column(name = "name")
private String name;
public Role(){}
public Role(String name) {
this.name = name;
}
public Integer getId() {
return id;
}
public void setId(Integer id) {
this.id = id;
}
public String getName() {
return name;
}
public void setName(String name) {
this.name = name;
}
#Override
public String toString() {
return "Role{" +
"name='" + name + '\'' +
'}';
}
}
`
UserDAOImplementation.class
`
#Repository
public class UserDAOImplementation implements UserDAO {
#Autowired
private EntityManager entityManager;
#Override
public User findByUserName(String username) {
Session currentSession = entityManager.unwrap(Session.class);
// now retrieve/read from database using username
Query<User> theQuery = currentSession.createQuery("from User where username=:uName");
theQuery.setParameter("uName", username);
User theUser = null;
try {
theUser = theQuery.getSingleResult();
} catch (Exception e) {
theUser = null;
}
return theUser;
}
#Override
public void save(User user) {
Session currentSession = entityManager.unwrap(Session.class);
currentSession.saveOrUpdate(user);
}
#Override
public void deleteByUsername(String username) {
Session session = entityManager.unwrap(Session.class);
Query query=session.createQuery("delete from User where username=:userName");
query.setParameter("userName",username);
query.executeUpdate();
}
#Override
public List<User> findAll() {
Session session = entityManager.unwrap(Session.class);
Query query=session.createQuery("from User");
List<User>users=query.getResultList();
return users;
}
#Override
public void update(User user) {
Session currentSession = entityManager.unwrap(Session.class);
currentSession.update(user);
}
}
`