Spaces to tabs and license cleanup

samples/security/src/main/java/sample/Config.java

@@ -1,3 +1,18 @@
+/*
+ * Copyright 2002-2015 the original author or authors.
+ *
+ * Licensed under the Apache License, Version 2.0 (the "License");
+ * you may not use this file except in compliance with the License.
+ * You may obtain a copy of the License at
+ *
+ *      http://www.apache.org/licenses/LICENSE-2.0
+ *
+ * Unless required by applicable law or agreed to in writing, software
+ * distributed under the License is distributed on an "AS IS" BASIS,
+ * WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
+ * See the License for the specific language governing permissions and
+ * limitations under the License.
+ */
 package sample;
 
 import org.springframework.context.annotation.Bean;
@@ -6,13 +21,15 @@ import org.springframework.context.annotation.Import;
 import org.springframework.data.redis.connection.jedis.JedisConnectionFactory;
 import org.springframework.session.data.redis.config.annotation.web.http.EnableRedisHttpSession;
 
+// tag::class[]
 @Configuration
 @Import(EmbeddedRedisConfiguration.class) // <1>
 @EnableRedisHttpSession // <2>
 public class Config {
 
-    @Bean
-    public JedisConnectionFactory connectionFactory() {
-        return new JedisConnectionFactory(); // <3>
-    }
+	@Bean
+	public JedisConnectionFactory connectionFactory() {
+		return new JedisConnectionFactory(); // <3>
+	}
 }
+// end::class[]