Use List.of() and Set.of() where feasible

spring-test/src/main/java/org/springframework/mock/web/MockFilterChain.java

@@ -17,7 +17,6 @@
 package org.springframework.mock.web;
 
 import java.io.IOException;
-import java.util.Arrays;
 import java.util.Collections;
 import java.util.Iterator;
 import java.util.List;
@@ -94,7 +93,7 @@ public class MockFilterChain implements FilterChain {
 
 	private static List<Filter> initFilterList(Servlet servlet, Filter... filters) {
 		Filter[] allFilters = ObjectUtils.addObjectToArray(filters, new ServletFilterProxy(servlet));
-		return Arrays.asList(allFilters);
+		return List.of(allFilters);
 	}
 
 

spring-test/src/main/java/org/springframework/test/context/junit/jupiter/SpringExtension.java

@@ -1,5 +1,5 @@
 /*
- * Copyright 2002-2021 the original author or authors.
+ * Copyright 2002-2022 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.
@@ -97,7 +97,7 @@ public class SpringExtension implements BeforeAllCallback, AfterAllCallback, Tes
 	// Note that @Test, @TestFactory, @TestTemplate, @RepeatedTest, and @ParameterizedTest
 	// are all meta-annotated with @Testable.
 	private static final List<Class<? extends Annotation>> JUPITER_ANNOTATION_TYPES =
-			Arrays.asList(BeforeAll.class, AfterAll.class, BeforeEach.class, AfterEach.class, Testable.class);
+			List.of(BeforeAll.class, AfterAll.class, BeforeEach.class, AfterEach.class, Testable.class);
 
 	private static final MethodFilter autowiredTestOrLifecycleMethodFilter =
 			ReflectionUtils.USER_DECLARED_METHODS

spring-test/src/main/java/org/springframework/test/web/reactive/server/ExchangeResult.java

@@ -20,7 +20,6 @@ import java.net.URI;
 import java.nio.charset.Charset;
 import java.nio.charset.StandardCharsets;
 import java.time.Duration;
-import java.util.Arrays;
 import java.util.List;
 import java.util.stream.Collectors;
 
@@ -59,7 +58,7 @@ public class ExchangeResult {
 
 	private static final Log logger = LogFactory.getLog(ExchangeResult.class);
 
-	private static final List<MediaType> PRINTABLE_MEDIA_TYPES = Arrays.asList(
+	private static final List<MediaType> PRINTABLE_MEDIA_TYPES = List.of(
 			MediaType.parseMediaType("application/*+json"), MediaType.APPLICATION_XML,
 			MediaType.parseMediaType("text/*"), MediaType.APPLICATION_FORM_URLENCODED);