diff --git a/spring-security-mvc-boot/src/main/java/org/baeldung/rolesauthorities/MyUserDetailsService.java b/spring-security-mvc-boot/src/main/java/org/baeldung/rolesauthorities/MyUserDetailsService.java
index 5749c6194c..f38b867a75 100644
--- a/spring-security-mvc-boot/src/main/java/org/baeldung/rolesauthorities/MyUserDetailsService.java
+++ b/spring-security-mvc-boot/src/main/java/org/baeldung/rolesauthorities/MyUserDetailsService.java
@@ -3,8 +3,8 @@ package org.baeldung.rolesauthorities;
 import java.util.ArrayList;
 import java.util.Collection;
 import java.util.List;
+import java.util.stream.Collectors;
 
-import org.baeldung.rolesauthorities.model.Privilege;
 import org.baeldung.rolesauthorities.model.Role;
 import org.baeldung.rolesauthorities.model.User;
 import org.baeldung.rolesauthorities.persistence.UserRepository;
@@ -31,10 +31,10 @@ public class MyUserDetailsService implements UserDetailsService {
     // API
 
     @Override
-    public UserDetails loadUserByUsername(final String email) throws UsernameNotFoundException {
+    public UserDetails loadUserByUsername(String email) throws UsernameNotFoundException {
 
         try {
-            final User user = userRepository.findByEmail(email);
+            User user = userRepository.findByEmail(email);
             if (user == null) {
                 throw new UsernameNotFoundException("No user found with username: " + email);
             }
@@ -47,13 +47,14 @@ public class MyUserDetailsService implements UserDetailsService {
 
     // UTIL
 
-    private final Collection<? extends GrantedAuthority> getAuthorities(final Collection<Role> roles) {
-    	final List<GrantedAuthority> authorities = new ArrayList<GrantedAuthority>();
+    private final Collection<? extends GrantedAuthority> getAuthorities(Collection<Role> roles) {
+    	List<GrantedAuthority> authorities = new ArrayList<GrantedAuthority>();
     	for (Role role: roles) {
     		authorities.add(new SimpleGrantedAuthority(role.getName()));
-    		for (Privilege privilege: role.getPrivileges()) {
-    			authorities.add(new SimpleGrantedAuthority(privilege.getName()));
-    		}
+    		authorities.addAll(role.getPrivileges()
+    				.stream()
+    				.map(p -> new SimpleGrantedAuthority(p.getName()))
+    				.collect(Collectors.toList()));
     	}
         return authorities;
     }
diff --git a/spring-security-mvc-boot/src/main/java/org/baeldung/rolesauthorities/config/SecurityConfig.java b/spring-security-mvc-boot/src/main/java/org/baeldung/rolesauthorities/config/SecurityConfig.java
index cadd477e5e..7624dd7d39 100644
--- a/spring-security-mvc-boot/src/main/java/org/baeldung/rolesauthorities/config/SecurityConfig.java
+++ b/spring-security-mvc-boot/src/main/java/org/baeldung/rolesauthorities/config/SecurityConfig.java
@@ -36,19 +36,19 @@ public class SecurityConfig extends WebSecurityConfigurerAdapter {
     }
 
     @Override
-    protected void configure(final AuthenticationManagerBuilder auth) throws Exception {
+    protected void configure(AuthenticationManagerBuilder auth) throws Exception {
         auth.authenticationProvider(authProvider());
     }
 
     @Override
-    public void configure(final WebSecurity web) throws Exception {
+    public void configure(WebSecurity web) throws Exception {
         web.ignoring()
             .antMatchers("/resources/**");
     }
 
     
     @Override
-    protected void configure(final HttpSecurity http) throws Exception {
+    protected void configure(HttpSecurity http) throws Exception {
     	
         // @formatter:off
         http
diff --git a/spring-security-mvc-boot/src/main/java/org/baeldung/rolesauthorities/model/Privilege.java b/spring-security-mvc-boot/src/main/java/org/baeldung/rolesauthorities/model/Privilege.java
index 5165429b5a..ab2cd08610 100644
--- a/spring-security-mvc-boot/src/main/java/org/baeldung/rolesauthorities/model/Privilege.java
+++ b/spring-security-mvc-boot/src/main/java/org/baeldung/rolesauthorities/model/Privilege.java
@@ -24,7 +24,7 @@ public class Privilege {
         super();
     }
 
-    public Privilege(final String name) {
+    public Privilege(String name) {
         super();
         this.name = name;
     }
@@ -35,7 +35,7 @@ public class Privilege {
         return id;
     }
 
-    public void setId(final Long id) {
+    public void setId(Long id) {
         this.id = id;
     }
 
@@ -43,7 +43,7 @@ public class Privilege {
         return name;
     }
 
-    public void setName(final String name) {
+    public void setName(String name) {
         this.name = name;
     }
 
@@ -51,13 +51,13 @@ public class Privilege {
         return roles;
     }
 
-    public void setRoles(final Collection<Role> roles) {
+    public void setRoles(Collection<Role> roles) {
         this.roles = roles;
     }
 
     @Override
     public int hashCode() {
-        final int prime = 31;
+        int prime = 31;
         int result = 1;
         result = prime * result + ((name == null) ? 0 : name.hashCode());
         return result;
diff --git a/spring-security-mvc-boot/src/main/java/org/baeldung/rolesauthorities/model/Role.java b/spring-security-mvc-boot/src/main/java/org/baeldung/rolesauthorities/model/Role.java
index 9216abe470..ac33e32fcf 100644
--- a/spring-security-mvc-boot/src/main/java/org/baeldung/rolesauthorities/model/Role.java
+++ b/spring-security-mvc-boot/src/main/java/org/baeldung/rolesauthorities/model/Role.java
@@ -30,7 +30,7 @@ public class Role {
         super();
     }
 
-    public Role(final String name) {
+    public Role(String name) {
         super();
         this.name = name;
     }
@@ -41,7 +41,7 @@ public class Role {
         return id;
     }
 
-    public void setId(final Long id) {
+    public void setId(Long id) {
         this.id = id;
     }
 
@@ -49,7 +49,7 @@ public class Role {
         return name;
     }
 
-    public void setName(final String name) {
+    public void setName(String name) {
         this.name = name;
     }
 
@@ -57,7 +57,7 @@ public class Role {
         return users;
     }
 
-    public void setUsers(final Collection<User> users) {
+    public void setUsers(Collection<User> users) {
         this.users = users;
     }
 
@@ -65,20 +65,20 @@ public class Role {
         return privileges;
     }
 
-    public void setPrivileges(final Collection<Privilege> privileges) {
+    public void setPrivileges(Collection<Privilege> privileges) {
         this.privileges = privileges;
     }
 
     @Override
     public int hashCode() {
-        final int prime = 31;
+        int prime = 31;
         int result = 1;
         result = prime * result + ((name == null) ? 0 : name.hashCode());
         return result;
     }
 
     @Override
-    public boolean equals(final Object obj) {
+    public boolean equals(Object obj) {
         if (this == obj) {
             return true;
         }
@@ -88,7 +88,7 @@ public class Role {
         if (getClass() != obj.getClass()) {
             return false;
         }
-        final Role role = (Role) obj;
+        Role role = (Role) obj;
         if (!role.equals(role.name)) {
             return false;
         }
@@ -97,7 +97,7 @@ public class Role {
 
     @Override
     public String toString() {
-        final StringBuilder builder = new StringBuilder();
+        StringBuilder builder = new StringBuilder();
         builder.append("Role [name=").append(name).append("]").append("[id=").append(id).append("]");
         return builder.toString();
     }
diff --git a/spring-security-mvc-boot/src/main/java/org/baeldung/rolesauthorities/model/User.java b/spring-security-mvc-boot/src/main/java/org/baeldung/rolesauthorities/model/User.java
index dd5b90e3b2..dc1096541d 100644
--- a/spring-security-mvc-boot/src/main/java/org/baeldung/rolesauthorities/model/User.java
+++ b/spring-security-mvc-boot/src/main/java/org/baeldung/rolesauthorities/model/User.java
@@ -50,7 +50,7 @@ public class User {
         return id;
     }
 
-    public void setId(final Long id) {
+    public void setId(Long id) {
         this.id = id;
     }
 
@@ -58,7 +58,7 @@ public class User {
         return firstName;
     }
 
-    public void setFirstName(final String firstName) {
+    public void setFirstName(String firstName) {
         this.firstName = firstName;
     }
 
@@ -66,7 +66,7 @@ public class User {
         return lastName;
     }
 
-    public void setLastName(final String lastName) {
+    public void setLastName(String lastName) {
         this.lastName = lastName;
     }
 
@@ -74,7 +74,7 @@ public class User {
         return email;
     }
 
-    public void setEmail(final String username) {
+    public void setEmail(String username) {
         this.email = username;
     }
 
@@ -82,7 +82,7 @@ public class User {
         return password;
     }
 
-    public void setPassword(final String password) {
+    public void setPassword(String password) {
         this.password = password;
     }
 
@@ -90,7 +90,7 @@ public class User {
         return roles;
     }
 
-    public void setRoles(final Collection<Role> roles) {
+    public void setRoles(Collection<Role> roles) {
         this.roles = roles;
     }
 
@@ -98,7 +98,7 @@ public class User {
         return enabled;
     }
 
-    public void setEnabled(final boolean enabled) {
+    public void setEnabled(boolean enabled) {
         this.enabled = enabled;
     }
 
@@ -112,14 +112,14 @@ public class User {
 
     @Override
     public int hashCode() {
-        final int prime = 31;
+        int prime = 31;
         int result = 1;
         result = (prime * result) + ((email == null) ? 0 : email.hashCode());
         return result;
     }
 
     @Override
-    public boolean equals(final Object obj) {
+    public boolean equals(Object obj) {
         if (this == obj) {
             return true;
         }
@@ -129,7 +129,7 @@ public class User {
         if (getClass() != obj.getClass()) {
             return false;
         }
-        final User user = (User) obj;
+        User user = (User) obj;
         if (!email.equals(user.email)) {
             return false;
         }
@@ -138,7 +138,7 @@ public class User {
 
     @Override
     public String toString() {
-        final StringBuilder builder = new StringBuilder();
+        StringBuilder builder = new StringBuilder();
         builder.append("User [id=").append(id).append(", firstName=")
         	.append(firstName).append(", lastName=").append(lastName).append(", email=").append(email).append(", password=").append(password).append(", enabled=").append(enabled).append(", roles=").append(roles).append("]");
         return builder.toString();
diff --git a/spring-security-mvc-boot/src/main/java/org/baeldung/rolesauthorities/persistence/PersistenceJPAConfig.java b/spring-security-mvc-boot/src/main/java/org/baeldung/rolesauthorities/persistence/PersistenceJPAConfig.java
index 45e47ecb4a..a993e41a83 100644
--- a/spring-security-mvc-boot/src/main/java/org/baeldung/rolesauthorities/persistence/PersistenceJPAConfig.java
+++ b/spring-security-mvc-boot/src/main/java/org/baeldung/rolesauthorities/persistence/PersistenceJPAConfig.java
@@ -36,10 +36,10 @@ public class PersistenceJPAConfig {
 
     @Bean
     public LocalContainerEntityManagerFactoryBean entityManagerFactory() {
-        final LocalContainerEntityManagerFactoryBean em = new LocalContainerEntityManagerFactoryBean();
+        LocalContainerEntityManagerFactoryBean em = new LocalContainerEntityManagerFactoryBean();
         em.setDataSource(dataSource());
         em.setPackagesToScan(new String[] { "org.baeldung.rolesauthorities" });
-        final HibernateJpaVendorAdapter vendorAdapter = new HibernateJpaVendorAdapter();
+        HibernateJpaVendorAdapter vendorAdapter = new HibernateJpaVendorAdapter();
         em.setJpaVendorAdapter(vendorAdapter);
         em.setJpaProperties(additionalProperties());
         return em;
@@ -47,7 +47,7 @@ public class PersistenceJPAConfig {
 
     @Bean
     public DataSource dataSource() {
-        final DriverManagerDataSource dataSource = new DriverManagerDataSource();
+        DriverManagerDataSource dataSource = new DriverManagerDataSource();
         dataSource.setDriverClassName(env.getProperty("jdbc.driverClassName"));
         dataSource.setUrl(env.getProperty("jdbc.url"));
         dataSource.setUsername(env.getProperty("jdbc.user"));
@@ -57,7 +57,7 @@ public class PersistenceJPAConfig {
 
     @Bean
     public JpaTransactionManager transactionManager() {
-        final JpaTransactionManager transactionManager = new JpaTransactionManager();
+        JpaTransactionManager transactionManager = new JpaTransactionManager();
         transactionManager.setEntityManagerFactory(entityManagerFactory().getObject());
         return transactionManager;
     }
@@ -68,7 +68,7 @@ public class PersistenceJPAConfig {
     }
 
     protected Properties additionalProperties() {
-        final Properties hibernateProperties = new Properties();
+        Properties hibernateProperties = new Properties();
         hibernateProperties.setProperty("hibernate.hbm2ddl.auto", env.getProperty("hibernate.hbm2ddl.auto"));
         hibernateProperties.setProperty("hibernate.dialect", env.getProperty("hibernate.dialect"));
         return hibernateProperties;
diff --git a/spring-security-mvc-boot/src/main/java/org/baeldung/rolesauthorities/persistence/SetupDataLoader.java b/spring-security-mvc-boot/src/main/java/org/baeldung/rolesauthorities/persistence/SetupDataLoader.java
index 6c1c7d87ef..46dad4f06d 100644
--- a/spring-security-mvc-boot/src/main/java/org/baeldung/rolesauthorities/persistence/SetupDataLoader.java
+++ b/spring-security-mvc-boot/src/main/java/org/baeldung/rolesauthorities/persistence/SetupDataLoader.java
@@ -35,23 +35,23 @@ public class SetupDataLoader implements ApplicationListener<ContextRefreshedEven
 
     @Override
     @Transactional
-    public void onApplicationEvent(final ContextRefreshedEvent event) {
+    public void onApplicationEvent(ContextRefreshedEvent event) {
         if (alreadySetup) {
             return;
         }
 
         // == create initial privileges
-        final Privilege readPrivilege = createPrivilegeIfNotFound("READ_PRIVILEGE");
-        final Privilege writePrivilege = createPrivilegeIfNotFound("WRITE_PRIVILEGE"); 
+        Privilege readPrivilege = createPrivilegeIfNotFound("READ_PRIVILEGE");
+        Privilege writePrivilege = createPrivilegeIfNotFound("WRITE_PRIVILEGE"); 
 
         // == create initial roles
-        final List<Privilege> adminPrivileges = Arrays.asList(readPrivilege, writePrivilege);
+        List<Privilege> adminPrivileges = Arrays.asList(readPrivilege, writePrivilege);
         createRoleIfNotFound("ROLE_ADMIN", adminPrivileges);
         List<Privilege> rolePrivileges = new ArrayList<>();
         createRoleIfNotFound("ROLE_USER", rolePrivileges);
 
-        final Role adminRole = roleRepository.findByName("ROLE_ADMIN");
-        final User user = new User();
+        Role adminRole = roleRepository.findByName("ROLE_ADMIN");
+        User user = new User();
         user.setFirstName("Admin");
         user.setLastName("Admin");
         user.setEmail("admin@test.com");
@@ -60,8 +60,8 @@ public class SetupDataLoader implements ApplicationListener<ContextRefreshedEven
         user.setEnabled(true);
         userRepository.save(user);
 
-        final Role basicRole = roleRepository.findByName("ROLE_USER");
-        final User basicUser = new User();
+        Role basicRole = roleRepository.findByName("ROLE_USER");
+        User basicUser = new User();
         basicUser.setFirstName("User");
         basicUser.setLastName("User");
         basicUser.setEmail("user@test.com");
@@ -74,7 +74,7 @@ public class SetupDataLoader implements ApplicationListener<ContextRefreshedEven
     }
 
     @Transactional
-    private final Privilege createPrivilegeIfNotFound(final String name) {
+    private Privilege createPrivilegeIfNotFound(String name) {
         Privilege privilege = privilegeRepository.findByName(name);
         if (privilege == null) {
             privilege = new Privilege(name);
@@ -84,7 +84,7 @@ public class SetupDataLoader implements ApplicationListener<ContextRefreshedEven
     }
 
     @Transactional
-    private final Role createRoleIfNotFound(final String name, final Collection<Privilege> privileges) {
+    private Role createRoleIfNotFound(String name, Collection<Privilege> privileges) {
         Role role = roleRepository.findByName(name);
         if (role == null) {
             role = new Role(name);
diff --git a/spring-security-mvc-boot/src/main/java/org/baeldung/rolesauthorities/persistence/UserService.java b/spring-security-mvc-boot/src/main/java/org/baeldung/rolesauthorities/persistence/UserService.java
index bdea674057..3b16c78898 100644
--- a/spring-security-mvc-boot/src/main/java/org/baeldung/rolesauthorities/persistence/UserService.java
+++ b/spring-security-mvc-boot/src/main/java/org/baeldung/rolesauthorities/persistence/UserService.java
@@ -13,7 +13,7 @@ public class UserService implements IUserService {
     @Autowired
     private UserRepository repository;
 
-    public User findUserByEmail(final String email) {
+    public User findUserByEmail(String email) {
         return repository.findByEmail(email);
     }
 }
\ No newline at end of file