src/share/classes/java/lang/String.java

*** 2233,2243 ****
       * <p> The array returned by this method contains each substring of this
       * string that is terminated by another substring that matches the given
       * expression or is terminated by the end of the string.  The substrings in
       * the array are in the order in which they occur in this string.  If the
       * expression does not match any part of the input then the resulting array
!      * has just one element, namely this string.
       *
       * <p> The {@code limit} parameter controls the number of times the
       * pattern is applied and therefore affects the length of the resulting
       * array.  If the limit <i>n</i> is greater than zero then the pattern
       * will be applied at most <i>n</i>&nbsp;-&nbsp;1 times, the array's
--- 2233,2249 ----
       * <p> The array returned by this method contains each substring of this
       * string that is terminated by another substring that matches the given
       * expression or is terminated by the end of the string.  The substrings in
       * the array are in the order in which they occur in this string.  If the
       * expression does not match any part of the input then the resulting array
!      * has just one element, namely this string. A zero-length input sequence
!      * always results zero-length resulting array.
!      *
!      * <p> When there is a positive-width match at the beginning of this
!      * string then an empty leading substring is included at the beginning
!      * of the resulting array. A zero-width match at the beginning however
!      * never produces such empty leading substring.
       *
       * <p> The {@code limit} parameter controls the number of times the
       * pattern is applied and therefore affects the length of the resulting
       * array.  If the limit <i>n</i> is greater than zero then the pattern
       * will be applied at most <i>n</i>&nbsp;-&nbsp;1 times, the array's
*** 2323,2332 ****
--- 2329,2340 ----
                ((ch-'a')|('z'-ch)) < 0 &&
                ((ch-'A')|('Z'-ch)) < 0)) &&
              (ch < Character.MIN_HIGH_SURROGATE ||
               ch > Character.MAX_LOW_SURROGATE))
          {
+             if (value.length == 0)
+                 return new String[0];
              int off = 0;
              int next = 0;
              boolean limited = limit > 0;
              ArrayList<String> list = new ArrayList<>();
              while ((next = indexOf(ch, off)) != -1) {