diff --git a/spring-test/src/test/java/org/springframework/test/web/reactive/server/samples/JsonContentTests.java b/spring-test/src/test/java/org/springframework/test/web/reactive/server/samples/JsonContentTests.java
index e6a4ed7799..31d8efd369 100644
--- a/spring-test/src/test/java/org/springframework/test/web/reactive/server/samples/JsonContentTests.java
+++ b/spring-test/src/test/java/org/springframework/test/web/reactive/server/samples/JsonContentTests.java
@@ -52,10 +52,13 @@ class JsonContentTests {
 				.accept(MediaType.APPLICATION_JSON)
 				.exchange()
 				.expectStatus().isOk()
-				.expectBody().json(
-						"[{\"firstName\":\"Jane\"}," +
-						"{\"firstName\":\"Jason\"}," +
-						"{\"firstName\":\"John\"}]");
+				.expectBody().json("""
+						[
+							{"firstName":"Jane"},
+							{"firstName":"Jason"},
+							{"firstName":"John"}
+						]
+						""");
 	}
 
 	@Test
@@ -64,10 +67,13 @@ class JsonContentTests {
 				.accept(MediaType.APPLICATION_JSON)
 				.exchange()
 				.expectStatus().isOk()
-				.expectBody().json(
-						"[{\"firstName\":\"Jane\",\"lastName\":\"Williams\"}," +
-						"{\"firstName\":\"Jason\",\"lastName\":\"Johnson\"}," +
-						"{\"firstName\":\"John\",\"lastName\":\"Smith\"}]",
+				.expectBody().json("""
+						[
+							{"firstName":"Jane", "lastName":"Williams"},
+							{"firstName":"Jason","lastName":"Johnson"},
+							{"firstName":"John", "lastName":"Smith"}
+						]
+						""",
 						true);
 	}
 
@@ -76,10 +82,13 @@ class JsonContentTests {
 		assertThatExceptionOfType(AssertionError.class).isThrownBy(() -> this.client.get().uri("/persons")
 				.accept(MediaType.APPLICATION_JSON)
 				.exchange()
-				.expectBody().json(
-						"[{\"firstName\":\"Jane\"}," +
-						"{\"firstName\":\"Jason\"}," +
-						"{\"firstName\":\"John\"}]",
+				.expectBody().json("""
+						[
+							{"firstName":"Jane"},
+							{"firstName":"Jason"},
+							{"firstName":"John"}
+						]
+						""",
 						true)
 		);
 	}
@@ -110,7 +119,9 @@ class JsonContentTests {
 	void postJsonContent() {
 		this.client.post().uri("/persons")
 				.contentType(MediaType.APPLICATION_JSON)
-				.bodyValue("{\"firstName\":\"John\",\"lastName\":\"Smith\"}")
+				.bodyValue("""
+						{"firstName":"John", "lastName":"Smith"}
+						""")
 				.exchange()
 				.expectStatus().isCreated()
 				.expectBody().isEmpty();