Polishing

spring-beans/src/main/java/org/springframework/beans/factory/config/PropertyPlaceholderConfigurer.java

 /*
- * Copyright 2002-2016 the original author or authors.
+ * Copyright 2002-2017 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.
@@ -17,7 +17,6 @@
 package org.springframework.beans.factory.config;
 
 import java.util.Properties;
-import java.util.Set;
 
 import org.springframework.beans.BeansException;
 import org.springframework.core.Constants;

spring-context/src/main/java/org/springframework/context/annotation/Bean.java

 /*
- * Copyright 2002-2016 the original author or authors.
+ * Copyright 2002-2017 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.
@@ -157,8 +157,8 @@ import org.springframework.core.annotation.AliasFor;
  *
  * <pre class="code">
  *     &#064;Bean
- *     public static PropertyPlaceholderConfigurer ppc() {
- *         // instantiate, configure and return ppc ...
+ *     public static PropertySourcesPlaceholderConfigurer pspc() {
+ *         // instantiate, configure and return pspc ...
  *     }
  * </pre>
  *