The NLSPrefrences interface defines four methods as shown below:

public interface NLSPreferences
{
   /**
    * Returns the locale to be used.
    **/
    Locale getLocale();
 
    /**
     * Return the timezone to be used.
     **/
    TimeZone getTimeZone();
 
    /**
     * Return the dateformat to be used.
     */
    String getDateFormat();
 
    /**
     * Return the time format to be used.
     */
    String getTimeFormat();
 
    /**
     * Returns the grouping seperator.
     */
    char getGroupingSeparator();
 
    /**
     * Returns the grouping seperator.
     */
   char getDecimalSeparator();
}

The code sample below shows a sample implementation of the NLSPreferences interface:

public class MyNLSPreferences implements NLSPreferences {
        private static final String DATE_STYLE = "yyyy-MM-dd";
        private static final String TIME_STYLE = "HH-mm-ss";
	private static final char G_SEP = ',';
	private static final char D_SEP = '.';
 
        public Locale getLocale() {
            return Locale.FRENCH;
        }
 
        public TimeZone getTimeZone() {
            return TimeZone.getTimeZone("America/Los_Angeles");
        }
 
        public String getDateFormat() {
            return DATE_STYLE;
        }
 
        public String getTimeFormat() {
            return TIME_STYLE;
        }
        
        public char getGroupingSeparator() {
	    return G_SEP;
	}
 
	public char getDecimalSeparator() {
	    return D_SEP;
        }
    }