--- old/src/java.desktop/share/classes/java/awt/font/LineBreakMeasurer.java	2018-01-08 12:01:57.404832000 +0530
+++ new/src/java.desktop/share/classes/java/awt/font/LineBreakMeasurer.java	2018-01-08 12:01:56.948832000 +0530
@@ -1,5 +1,5 @@
 /*
- * Copyright (c) 1998, 2013, Oracle and/or its affiliates. All rights reserved.
+ * Copyright (c) 1998, 2018, Oracle and/or its affiliates. All rights reserved.
  * DO NOT ALTER OR REMOVE COPYRIGHT NOTICES OR THIS FILE HEADER.
  *
  * This code is free software; you can redistribute it and/or modify it
@@ -487,6 +487,8 @@
      * @param newParagraph the text after the insertion
      * @param insertPos the position in the text at which the character
      *    is inserted
+     * @throws IllegalArgumentException if multiple characters are inserted
+     *         in the text represented by {@code newParagraph}
      * @throws IndexOutOfBoundsException if {@code insertPos} is less
      *         than the start of {@code newParagraph} or greater than
      *         or equal to the end of {@code newParagraph}
@@ -513,6 +515,8 @@
      * @param newParagraph the text after the deletion
      * @param deletePos the position in the text at which the character
      *    is deleted
+     * @throws IllegalArgumentException if multiple characters are deleted from
+     *         the text represented by {@code newParagraph}
      * @throws IndexOutOfBoundsException if {@code deletePos} is
      *         less than the start of {@code newParagraph} or greater
      *         than the end of {@code newParagraph}