Java : Setting Locale System Properties

System Property	Description
user.language	Two-letter language name code based on ISO 639.
user.region	Two-letter region name code based on ISO 3166.
file.encoding	Default character-encoding name based on the IANA Charset MIB.

ex.

-Duser.country=US -Duser.language=en

Ref: 1.

ดู locale ได้จาก Ref

Excel 2007: "There was a problem sending the command to the program"

If you have ever tried to open an excel document and received the error that says "There was a problem sending the command to the program", you can fix it by doing the following:

• Open Excel 2007
• Open the Menu in the top left
• Click the "Excel Options" button 

• Click the advanced tab on the left of the options screen
• Under the general options uncheck the box "Ignore other application that use Dynamic Data Exchange (DDE)"