14. sort - (7) CommonUtils Demo (상수)

package utils;
 
import java.text.DecimalFormat;
import java.text.SimpleDateFormat;
import java.util.Date;
 
public class CommonUtils {
    
    private static final DecimalFormat NUMBER_FORMATER = new DecimalFormat("#, ###");
    private static final SimpleDateFormat NORMAL_DATE_FORMATER  = new SimpleDateFormat("yyyy-MM-dd");
    private static final SimpleDateFormat DETAIL_DATE_FORMATER  = new SimpleDateFormat("yyyy-MM-dd HH:mm:ss");
    
    public static String numberToString(long number) {
        return NUMBER_FORMATER.format(number);
    }
    
    public static String simpleDateString(Date date) {
        if (date == null) {
            return "";
        }
        return NORMAL_DATE_FORMATER.format(date);
    }
    
    public static String detailDateString(Date date) {
        if (date == null) {
            return "";
        }
        return DETAIL_DATE_FORMATER.format(date);
    }
    
}