Polish contribution

See gh-30710

spring-core/src/main/java/org/springframework/util/unit/DataSize.java

@@ -1,5 +1,5 @@
 /*
- * Copyright 2002-2022 the original author or authors.
+ * Copyright 2002-2023 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.

spring-messaging/src/main/java/org/springframework/messaging/simp/stomp/StompHeaderAccessor.java

@@ -1,5 +1,5 @@
 /*
- * Copyright 2002-2021 the original author or authors.
+ * Copyright 2002-2023 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.
@@ -239,11 +239,12 @@ public class StompHeaderAccessor extends SimpMessageHeaderAccessor {
 
 	public long[] getHeartbeat() {
 		String rawValue = getFirstNativeHeader(STOMP_HEARTBEAT_HEADER);
-		int pos = rawValue != null ? rawValue.indexOf(',') : -1;
+		int pos = (rawValue != null ? rawValue.indexOf(',') : -1);
 		if (pos == -1) {
 			return Arrays.copyOf(DEFAULT_HEARTBEAT, 2);
 		}
-		return new long[] {Long.parseLong(rawValue, 0, pos, 10), Long.parseLong(rawValue, pos + 1, rawValue.length(), 10)};
+		return new long[] {Long.parseLong(rawValue, 0, pos, 10),
+				Long.parseLong(rawValue, pos + 1, rawValue.length(), 10)};
 	}
 
 	public void setAcceptVersion(String acceptVersion) {

spring-messaging/src/main/java/org/springframework/messaging/simp/stomp/StompHeaders.java

@@ -280,11 +280,12 @@ public class StompHeaders implements MultiValueMap<String, String>, Serializable
 	@Nullable
 	public long[] getHeartbeat() {
 		String rawValue = getFirst(HEARTBEAT);
-		int pos = rawValue != null ? rawValue.indexOf(',') : -1;
+		int pos = (rawValue != null ? rawValue.indexOf(',') : -1);
 		if (pos == -1) {
 			return null;
 		}
-		return new long[] {Long.parseLong(rawValue, 0, pos, 10), Long.parseLong(rawValue, pos + 1, rawValue.length(), 10)};
+		return new long[] {Long.parseLong(rawValue, 0, pos, 10),
+				Long.parseLong(rawValue, pos + 1, rawValue.length(), 10)};
 	}
 
 	/**