minor cleanup work

Author: eugenp

spring-security-oauth-server/src/main/java/org/baeldung/config/TokenController.java

@@ -1,21 +1,21 @@
 package org.baeldung.config;
 
+import java.util.ArrayList;
+import java.util.Collection;
+import java.util.List;
+
 import javax.annotation.Resource;
 import javax.servlet.http.HttpServletRequest;
 
 import org.springframework.security.oauth2.common.OAuth2AccessToken;
 import org.springframework.security.oauth2.provider.token.ConsumerTokenServices;
 import org.springframework.security.oauth2.provider.token.TokenStore;
 import org.springframework.security.oauth2.provider.token.store.JdbcTokenStore;
-import java.util.Collection;
-import java.util.List;
-import java.util.ArrayList;
 import org.springframework.stereotype.Controller;
 import org.springframework.web.bind.annotation.PathVariable;
 import org.springframework.web.bind.annotation.RequestMapping;
 import org.springframework.web.bind.annotation.RequestMethod;
 import org.springframework.web.bind.annotation.ResponseBody;
-import javax.servlet.http.HttpServletRequest;
 
 @Controller
 public class TokenController {
@@ -30,17 +30,17 @@ public class TokenController {
     @ResponseBody
     public void revokeToken(HttpServletRequest request) {
         String authorization = request.getHeader("Authorization");
-        if (authorization != null && authorization.contains("Bearer")){
-            String tokenId = authorization.substring("Bearer".length()+1);
+        if (authorization != null && authorization.contains("Bearer")) {
+            String tokenId = authorization.substring("Bearer".length() + 1);
             tokenServices.revokeToken(tokenId);
         }
-	}
-	
+    }
+
     @RequestMapping(method = RequestMethod.POST, value = "/oauth/token/revokeById/{tokenId}")
     @ResponseBody
     public void revokeToken(HttpServletRequest request, @PathVariable String tokenId) {
         tokenServices.revokeToken(tokenId);
-	}
+    }
 
     @RequestMapping(method = RequestMethod.GET, value = "/tokens")
     @ResponseBody