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));
 }