diff --git a/spring-core/src/main/java/org/springframework/util/ConcurrentReferenceHashMap.java b/spring-core/src/main/java/org/springframework/util/ConcurrentReferenceHashMap.java
index 0ba30ce81af..46986ac233f 100644
--- a/spring-core/src/main/java/org/springframework/util/ConcurrentReferenceHashMap.java
+++ b/spring-core/src/main/java/org/springframework/util/ConcurrentReferenceHashMap.java
@@ -1017,6 +1017,7 @@ public class ConcurrentReferenceHashMap<K, V> extends AbstractMap<K, V> implemen
 		}
 	}
 
+
 	/**
 	 * Internal key-set implementation.
 	 */
@@ -1053,6 +1054,7 @@ public class ConcurrentReferenceHashMap<K, V> extends AbstractMap<K, V> implemen
 		}
 	}
 
+
 	/**
 	 * Internal key iterator implementation.
 	 */
@@ -1076,6 +1078,7 @@ public class ConcurrentReferenceHashMap<K, V> extends AbstractMap<K, V> implemen
 		}
 	}
 
+
 	/**
 	 * Internal values collection implementation.
 	 */
@@ -1112,6 +1115,7 @@ public class ConcurrentReferenceHashMap<K, V> extends AbstractMap<K, V> implemen
 		}
 	}
 
+
 	/**
 	 * Internal value iterator implementation.
 	 */
@@ -1135,6 +1139,7 @@ public class ConcurrentReferenceHashMap<K, V> extends AbstractMap<K, V> implemen
 		}
 	}
 
+
 	/**
 	 * Internal entry iterator implementation.
 	 */