JAVA 7 Is Not Picking Correct Locale In Spark 10

I am trying to the following code in spark 10 to get the locale of the system. but every time it is showing me "en" as the locale even though i am explicitly setting the system locale as Japanese through following command :
 
export LC_ALL=ja_JP.UTF-8
export LANG=ja_JP.UTF-8
 
My Code :

public static void main(String[] args) { 
  Locale sysDefaultLocale = Locale.getDefault();
  System.out.println("sysDefaultLocale : " + sysDefaultLocale);
  }