Applied changes requested by Chen: 'We might need to specify the IOOBE behavior - when an IOOBE is thrown, some characters may be already transferred (this is important for concurrent char sequences)'

Author: mkarg

src/java.base/share/classes/java/lang/CharSequence.java

@@ -332,7 +332,10 @@ public static int compare(CharSequence cs1, CharSequence cs2) {
      *
      * @implSpec
      * The default implementation invokes {@link #charAt(int index)} in a loop
-     * iterating {@code index} from {@code srcBegin} to {@code srcEnd-1}
+     * iterating {@code index} from {@code srcBegin} to {@code srcEnd-1}.
+     * Concurrent truncation of this character sequence can throw
+     * {@code IndexOutOfBoundsException}. In this case, some characters, but not
+     * all, may be already transferred.
      *
      * @since 25
      */