Polishing

Author: jhoeller

spring-core/src/main/java/org/springframework/util/StringUtils.java

@@ -853,7 +853,7 @@ public static Locale parseLocale(String localeValue) {
 		if (!localeValue.contains("_") && !localeValue.contains(" ")) {
 			validateLocalePart(localeValue);
 			Locale resolved = Locale.forLanguageTag(localeValue);
-			if (resolved.getLanguage().length() > 0) {
+			if (!resolved.getLanguage().isEmpty()) {
 				return resolved;
 			}
 		}
@@ -1182,7 +1182,7 @@ public static String[] tokenizeToStringArray(
 			if (trimTokens) {
 				token = token.trim();
 			}
-			if (!ignoreEmptyTokens || token.length() > 0) {
+			if (!ignoreEmptyTokens || !token.isEmpty()) {
 				tokens.add(token);
 			}
 		}
@@ -1244,7 +1244,7 @@ public static String[] delimitedListToStringArray(
 				result.add(deleteAny(str.substring(pos, delPos), charsToDelete));
 				pos = delPos + delimiter.length();
 			}
-			if (str.length() > 0 && pos <= str.length()) {
+			if (!str.isEmpty() && pos <= str.length()) {
 				// Add rest of String, but not in case of empty input.
 				result.add(deleteAny(str.substring(pos), charsToDelete));
 			}