ConvertHelper.java

package com.jiuqi.lbsinterface.utils;

import java.sql.Date;
import java.text.ParseException;
import java.text.SimpleDateFormat;

public class ConvertHelper {
	public static final String DATE_FORMAT = "yyyy-MM-dd";
	public static final SimpleDateFormat DEFAULT_DATE_FORMATTER = new SimpleDateFormat(DATE_FORMAT);

	public static String dateToString(Date date) {
		if (date == null) 
			return null;
		return DEFAULT_DATE_FORMATTER.format(date);
	}
	
	public static Date stringToDate(String dateStr) {
		if (dateStr == null)
			return null;
		try {
			return (Date) DEFAULT_DATE_FORMATTER.parse(dateStr);
		} catch (ParseException e) {
			return null;
		}
	}
}