diff --git a/spring-core/src/main/java/org/springframework/util/CollectionUtils.java b/spring-core/src/main/java/org/springframework/util/CollectionUtils.java
index 2a886020c9c..165b103768f 100644
--- a/spring-core/src/main/java/org/springframework/util/CollectionUtils.java
+++ b/spring-core/src/main/java/org/springframework/util/CollectionUtils.java
@@ -546,12 +546,11 @@ public abstract class CollectionUtils {
 	}
 
 	/**
-	 * Return a map that combines the provided maps. Invoking
-	 * {@link Map#put(Object, Object)} on the returned map will apply
-	 * {@code putFunction}, or will throw an
-	 * {@link UnsupportedOperationException} {@code putFunction} is
-	 * {@code null}. The same applies to {@link Map#putAll(Map)} and
-	 * {@code putAllFunction}.
+	 * Return a map that combines the provided maps.
+	 * <p>Invoking {@link Map#put(Object, Object)} on the returned map will apply
+	 * {@code putFunction}, or will throw an {@link UnsupportedOperationException}
+	 * if {@code putFunction} is {@code null}. The same applies to
+	 * {@link Map#putAll(Map)} and {@code putAllFunction}.
 	 * <p>In the case of a key collision, {@code first} takes precedence over
 	 * {@code second}. In other words, entries in {@code second} with a key
 	 * that is also mapped by {@code first} are effectively ignored.
diff --git a/spring-core/src/main/java/org/springframework/util/CompositeMap.java b/spring-core/src/main/java/org/springframework/util/CompositeMap.java
index 5af883f269e..9f01cf286c3 100644
--- a/spring-core/src/main/java/org/springframework/util/CompositeMap.java
+++ b/spring-core/src/main/java/org/springframework/util/CompositeMap.java
@@ -77,22 +77,12 @@ final class CompositeMap<K, V extends @Nullable Object> implements Map<K, V> {
 
 	@Override
 	public boolean containsKey(Object key) {
-		if (this.first.containsKey(key)) {
-			return true;
-		}
-		else {
-			return this.second.containsKey(key);
-		}
+		return this.first.containsKey(key) || this.second.containsKey(key);
 	}
 
 	@Override
 	public boolean containsValue(Object value) {
-		if (this.first.containsValue(value)) {
-			return true;
-		}
-		else {
-			return this.second.containsValue(value);
-		}
+		return this.first.containsValue(value) || this.second.containsValue(value);
 	}
 
 	@Override