diff --git a/spring-core/src/test/java/org/springframework/core/annotation/OrderSourceProviderTests.java b/spring-core/src/test/java/org/springframework/core/annotation/OrderSourceProviderTests.java
index edbea15e940..75b16db2932 100644
--- a/spring-core/src/test/java/org/springframework/core/annotation/OrderSourceProviderTests.java
+++ b/spring-core/src/test/java/org/springframework/core/annotation/OrderSourceProviderTests.java
@@ -43,7 +43,7 @@ class OrderSourceProviderTests {
 		C c2 = new C(-5);
 		items.add(c);
 		items.add(c2);
-		Collections.sort(items, comparator);
+		items.sort(comparator);
 		assertOrder(items, c2, c);
 	}
 
@@ -54,7 +54,7 @@ class OrderSourceProviderTests {
 		B b = new B();
 
 		List<?> items = Arrays.asList(a, c, b);
-		Collections.sort(items, comparator.withSourceProvider(obj -> null));
+		items.sort(comparator.withSourceProvider(obj -> null));
 		assertOrder(items, c, a, b);
 	}
 
@@ -65,7 +65,7 @@ class OrderSourceProviderTests {
 		B b = new B();
 
 		List<?> items = Arrays.asList(a, c, b);
-		Collections.sort(items, comparator.withSourceProvider(obj -> {
+		items.sort(comparator.withSourceProvider(obj -> {
 			if (obj == a) {
 				return new C(4);
 			}
@@ -84,7 +84,7 @@ class OrderSourceProviderTests {
 		C c2 = new C(-5);
 
 		List<?> items = Arrays.asList(a, c, c2);
-		Collections.sort(items, comparator.withSourceProvider(obj -> {
+		items.sort(comparator.withSourceProvider(obj -> {
 			if (obj == a) {
 				return 4;
 			}
diff --git a/spring-core/src/test/java/org/springframework/core/convert/converter/ConvertingComparatorTests.java b/spring-core/src/test/java/org/springframework/core/convert/converter/ConvertingComparatorTests.java
index 840e10f7c98..baf822ede42 100644
--- a/spring-core/src/test/java/org/springframework/core/convert/converter/ConvertingComparatorTests.java
+++ b/spring-core/src/test/java/org/springframework/core/convert/converter/ConvertingComparatorTests.java
@@ -99,7 +99,7 @@ class ConvertingComparatorTests {
 	void shouldGetMapEntryKeys() throws Exception {
 		ArrayList<Entry<String, Integer>> list = createReverseOrderMapEntryList();
 		Comparator<Map.Entry<String, Integer>> comparator = ConvertingComparator.mapEntryKeys(new ComparableComparator<String>());
-		Collections.sort(list, comparator);
+		list.sort(comparator);
 		assertThat(list.get(0).getKey()).isEqualTo("a");
 	}
 
@@ -107,7 +107,7 @@ class ConvertingComparatorTests {
 	void shouldGetMapEntryValues() throws Exception {
 		ArrayList<Entry<String, Integer>> list = createReverseOrderMapEntryList();
 		Comparator<Map.Entry<String, Integer>> comparator = ConvertingComparator.mapEntryValues(new ComparableComparator<Integer>());
-		Collections.sort(list, comparator);
+		list.sort(comparator);
 		assertThat(list.get(0).getValue()).isEqualTo(1);
 	}
 
diff --git a/spring-core/src/test/java/org/springframework/util/AntPathMatcherTests.java b/spring-core/src/test/java/org/springframework/util/AntPathMatcherTests.java
index a67ebf37966..4bda118b870 100644
--- a/spring-core/src/test/java/org/springframework/util/AntPathMatcherTests.java
+++ b/spring-core/src/test/java/org/springframework/util/AntPathMatcherTests.java
@@ -510,56 +510,56 @@ class AntPathMatcherTests {
 
 		paths.add(null);
 		paths.add("/hotels/new");
-		Collections.sort(paths, comparator);
+		paths.sort(comparator);
 		assertThat(paths.get(0)).isEqualTo("/hotels/new");
 		assertThat(paths.get(1)).isNull();
 		paths.clear();
 
 		paths.add("/hotels/new");
 		paths.add(null);
-		Collections.sort(paths, comparator);
+		paths.sort(comparator);
 		assertThat(paths.get(0)).isEqualTo("/hotels/new");
 		assertThat(paths.get(1)).isNull();
 		paths.clear();
 
 		paths.add("/hotels/*");
 		paths.add("/hotels/new");
-		Collections.sort(paths, comparator);
+		paths.sort(comparator);
 		assertThat(paths.get(0)).isEqualTo("/hotels/new");
 		assertThat(paths.get(1)).isEqualTo("/hotels/*");
 		paths.clear();
 
 		paths.add("/hotels/new");
 		paths.add("/hotels/*");
-		Collections.sort(paths, comparator);
+		paths.sort(comparator);
 		assertThat(paths.get(0)).isEqualTo("/hotels/new");
 		assertThat(paths.get(1)).isEqualTo("/hotels/*");
 		paths.clear();
 
 		paths.add("/hotels/**");
 		paths.add("/hotels/*");
-		Collections.sort(paths, comparator);
+		paths.sort(comparator);
 		assertThat(paths.get(0)).isEqualTo("/hotels/*");
 		assertThat(paths.get(1)).isEqualTo("/hotels/**");
 		paths.clear();
 
 		paths.add("/hotels/*");
 		paths.add("/hotels/**");
-		Collections.sort(paths, comparator);
+		paths.sort(comparator);
 		assertThat(paths.get(0)).isEqualTo("/hotels/*");
 		assertThat(paths.get(1)).isEqualTo("/hotels/**");
 		paths.clear();
 
 		paths.add("/hotels/{hotel}");
 		paths.add("/hotels/new");
-		Collections.sort(paths, comparator);
+		paths.sort(comparator);
 		assertThat(paths.get(0)).isEqualTo("/hotels/new");
 		assertThat(paths.get(1)).isEqualTo("/hotels/{hotel}");
 		paths.clear();
 
 		paths.add("/hotels/new");
 		paths.add("/hotels/{hotel}");
-		Collections.sort(paths, comparator);
+		paths.sort(comparator);
 		assertThat(paths.get(0)).isEqualTo("/hotels/new");
 		assertThat(paths.get(1)).isEqualTo("/hotels/{hotel}");
 		paths.clear();
@@ -567,7 +567,7 @@ class AntPathMatcherTests {
 		paths.add("/hotels/*");
 		paths.add("/hotels/{hotel}");
 		paths.add("/hotels/new");
-		Collections.sort(paths, comparator);
+		paths.sort(comparator);
 		assertThat(paths.get(0)).isEqualTo("/hotels/new");
 		assertThat(paths.get(1)).isEqualTo("/hotels/{hotel}");
 		assertThat(paths.get(2)).isEqualTo("/hotels/*");
@@ -576,7 +576,7 @@ class AntPathMatcherTests {
 		paths.add("/hotels/ne*");
 		paths.add("/hotels/n*");
 		Collections.shuffle(paths);
-		Collections.sort(paths, comparator);
+		paths.sort(comparator);
 		assertThat(paths.get(0)).isEqualTo("/hotels/ne*");
 		assertThat(paths.get(1)).isEqualTo("/hotels/n*");
 		paths.clear();
@@ -585,7 +585,7 @@ class AntPathMatcherTests {
 		paths.add("/hotels/new.*");
 		paths.add("/hotels/{hotel}");
 		Collections.shuffle(paths);
-		Collections.sort(paths, comparator);
+		paths.sort(comparator);
 		assertThat(paths.get(0)).isEqualTo("/hotels/new.*");
 		assertThat(paths.get(1)).isEqualTo("/hotels/{hotel}");
 		paths.clear();
@@ -593,7 +593,7 @@ class AntPathMatcherTests {
 		comparator = pathMatcher.getPatternComparator("/web/endUser/action/login.html");
 		paths.add("/**/login.*");
 		paths.add("/**/endUser/action/login.*");
-		Collections.sort(paths, comparator);
+		paths.sort(comparator);
 		assertThat(paths.get(0)).isEqualTo("/**/endUser/action/login.*");
 		assertThat(paths.get(1)).isEqualTo("/**/login.*");
 		paths.clear();