--- old/src/jdk.compiler/share/classes/com/sun/tools/javac/file/JavacFileManager.java	2019-12-20 15:41:07.000000000 +0000
+++ new/src/jdk.compiler/share/classes/com/sun/tools/javac/file/JavacFileManager.java	2019-12-20 15:41:07.000000000 +0000
@@ -1247,7 +1247,7 @@
      * Get a detail message from an IOException.
      * Most, but not all, instances of IOException provide a non-null result
      * for getLocalizedMessage().  But some instances return null: in these
-     * cases, fallover to getMessage(), and if even that is null, return the
+     * cases, fall back to getMessage(), and if even that is null, return the
      * name of the exception itself.
      * @param e an IOException
      * @return a string to include in a compiler diagnostic