Static role imlementation of Spring Security role management

RolesCreator.java

public Collection<? extends GrantedAuthority> getAuthorities(Integer role) {
        List<GrantedAuthority> authList = getGrantedAuthorities(getRoles(role));
        return authList;
    }
     
    public List<String> getRoles(Integer role) {
 
        List<String> roles = new ArrayList<String>();
 
        if (role.intValue() == 1) {
            roles.add("MODERATOR");
            roles.add("ADMIN");
        } else if (role.intValue() == 2) {
            roles.add("MODERATOR");
        }else if (role.intValue()== 3 {
            roles.add("USER");
        return roles;
    }
     
    public static List<GrantedAuthority> getGrantedAuthorities(List<String> roles) {
        List<GrantedAuthority> authorities = new ArrayList<GrantedAuthority>();
         
        for (String role : roles) {
            authorities.add(new SimpleGrantedAuthority(role));
        }
        return authorities;
    }