src/java.base/share/classes/java/util/Calendar.java

rev 52979 : 8215281: Use String.isEmpty() when applicable in java.base
Reviewed-by: TBD

@@ -2230,11 +2230,11 @@
         DateFormatSymbols symbols = DateFormatSymbols.getInstance(locale);
         String[] strings = getFieldStrings(field, style, symbols);
         if (strings != null) {
             Map<String,Integer> names = new HashMap<>();
             for (int i = 0; i < strings.length; i++) {
-                if (strings[i].length() == 0) {
+                if (strings[i].isEmpty()) {
                     continue;
                 }
                 names.put(strings[i], i);
             }
             return names;