diff -r 5a5e00cc9932 -r 66c1dbc008c5 src/jdk.jpackage/share/classes/jdk/jpackage/internal/resources/HelpResources_ja.properties
--- a/src/jdk.jpackage/share/classes/jdk/jpackage/internal/resources/HelpResources_ja.properties	Thu Apr 11 07:44:51 2019 -0400
+++ b/src/jdk.jpackage/share/classes/jdk/jpackage/internal/resources/HelpResources_ja.properties	Fri Apr 12 10:54:10 2019 -0400
@@ -164,9 +164,9 @@
 \          The keys "extension", "mime-type", "icon", and "description"\n\
 \          can be used to describe the association.\n\
 \  --identifier <id string>\n\
-\          Machine readable identifier of the application\n\
-\          The format must be a DNS name in reverse order,\n\
-\          such as com.example.myapplication.\n\
+\          An identifier that uniquely identifies the application\n\
+\          Defaults to the main class name.\n\
+\          The value should be a valid DNS name.\n\
 \  --install-dir <file path>\n\
 \          {4}\
 \  --installer-type <type> \n\
@@ -223,7 +223,7 @@
 MSG_Help_mac_launcher=\
 \  --mac-bundle-identifier <ID string>\n\
 \          An identifier that uniquely identifies the application for MacOSX\n\
-\          (and on the Mac App Store)\n\
+\          Defaults to the value of --identifier option.\n\
 \          May only use alphanumeric (A-Z,a-z,0-9), hyphen (-),\n\
 \          and period (.) characters.\n\
 \  --mac-bundle-name <name string>\n\