Turned on checkstyle

spring-cloud-function-samples/function-sample-task/src/main/java/com/example/SampleApplication.java

@@ -1,5 +1,5 @@
 /*
- * Copyright 2017 the original author or authors.
+ * Copyright 2012-2019 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.
@@ -19,10 +19,13 @@ package com.example;
 import org.springframework.boot.SpringApplication;
 import org.springframework.boot.autoconfigure.SpringBootApplication;
 
+// @checkstyle:off
 @SpringBootApplication
 public class SampleApplication {
 
 	public static void main(String[] args) throws Exception {
 		SpringApplication.run(SampleApplication.class, args);
 	}
+
 }
+// @checkstyle:on

spring-cloud-function-samples/function-sample-task/src/main/resources/application.yml

@@ -4,7 +4,7 @@ spring:
       task:
         supplier: words
         function: uppercase
-        consumer: print        
+        consumer: print
       compile:
         words:
           type: supplier