This is a translation bug only in Japanese.
On ControlPanel, Update tab -> uncheck "Check for Update Automatically", the Java Update Warning dialog pop up. The message "You have chosen to never check for updates and may miss future security updates" is translated into 2 sentences but missing punctuation mark between them.
The same also applies to JDK 6 ControlPanel.
This bug fix has been ported to jdk7 as part of deployment team's umbrella port
6797688 7-b64 Umbrella: Merge all JDK 6u4 - 6u12 deployment code into JDK7