JAVA--日期工具类DateUtils

代码如下： 

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

public class DateUtils {
    private  DateUtils(){}

    public static String dateToString(Date date, String format){
        SimpleDateFormat sdf=new SimpleDateFormat(format);
        String s =sdf.format(date);
        return  s;

    }
    public static  Date stringToDate(String s,String format) throws ParseException {
            SimpleDateFormat sdf=new SimpleDateFormat(format);
            Date date=sdf.parse(s);
            return date;
    }
}