IDEA inspection refactorings.

samples/gae/src/main/java/samples/gae/security/AppRole.java

@@ -10,7 +10,7 @@ public enum AppRole implements GrantedAuthority {
     NEW_USER (1),
     USER (2);
 
-    private int bit;
+    private final int bit;
 
     /**
      * Creates an authority with a specific bit representation. It's important that this doesn't

samples/gae/src/main/java/samples/gae/security/GaeAuthenticationFilter.java

@@ -32,7 +32,7 @@ public class GaeAuthenticationFilter extends GenericFilterBean {
 
     private final Logger logger = LoggerFactory.getLogger(getClass());
 
-    private AuthenticationDetailsSource ads = new WebAuthenticationDetailsSource();
+    private final AuthenticationDetailsSource ads = new WebAuthenticationDetailsSource();
     private AuthenticationManager authenticationManager;
     private AuthenticationFailureHandler failureHandler = new SimpleUrlAuthenticationFailureHandler();
 

samples/gae/src/main/java/samples/gae/users/InMemoryUserRegistry.java

@@ -14,7 +14,7 @@ import org.springframework.util.Assert;
 public class InMemoryUserRegistry implements UserRegistry {
     private final Logger logger = LoggerFactory.getLogger(getClass());
 
-    private Map<String, GaeUser> users = Collections.synchronizedMap(new HashMap<String, GaeUser>()); 
+    private final Map<String, GaeUser> users = Collections.synchronizedMap(new HashMap<String, GaeUser>());
 
     public GaeUser findUser(String userId) {
         return users.get(userId);