java中的时间

public static String formatDate(Date date) {

        DateFormat sdf = new SimpleDateFormat("yyyy-MM-dd HH:mm:ss");

        return sdf.format(date);
    }

    public static String formatDate(Date date, String formatStr) {

        DateFormat sdf = new SimpleDateFormat(formatStr);

        return sdf.format(date);
    }
   
    /**
     * 获取当前时间
     *
     * @return
     */
    public static Date getCurTimeDate() {
       
        Calendar cal = Calendar.getInstance();
       
        return cal.getTime();
    }

    public static String getCurTimeStr() {

        Calendar cal = Calendar.getInstance();

        DateFormat sdf = new SimpleDateFormat("yyyy-MM-dd HH:mm:ss");

        return sdf.format(cal.getTime());
    }

    public static Date parseTimeStr(String timeStr, String formatStr){
       
        DateFormat sdf = new SimpleDateFormat(formatStr);

        try {
            return sdf.parse(timeStr);
        } catch (ParseException e) {
            e.printStackTrace();
        }
       
        return null;
    }
   
    public static Date getAfterYearDate(int years) {

        Calendar cal = Calendar.getInstance();

        cal.add(Calendar.YEAR, years);

        return cal.getTime();

    }
   
    public static Date getAfterMDDate(int months,int days) {

        Calendar cal = Calendar.getInstance();

        cal.add(Calendar.MONTH, months);
       
        cal.add(Calendar.DATE, days);

        return cal.getTime();

    }

    public static Date getAfterDayDate(int days) {

        Calendar cal = Calendar.getInstance();

        cal.add(Calendar.DATE, days);

        return cal.getTime();

    }
   
    public static Date getAfterDayDate(Date curTime,int days) {

        Calendar cal = Calendar.getInstance();

        cal.setTime(curTime);

        cal.add(Calendar.DATE, days);

        return cal.getTime();
    }

    public static Date getAfterMinuteDate(int minutes) {

        Calendar cal = Calendar.getInstance();

        cal.add(Calendar.MINUTE, minutes);

        return cal.getTime();

    }

    public static String getNextNDaysStr(String timeStr, String formatStr,
            int days) {

        Date endTime = parseTimeStr(timeStr, formatStr);

        Calendar cal = Calendar.getInstance();

        cal.setTime(endTime);

        cal.add(Calendar.DATE, days);

        return formatDate(cal.getTime(), formatStr);

    }
   
    public static String formateSeconds(int seconds){
       
        return seconds/3600+"时"+seconds%3600/60+"分"+seconds%3600%60+"秒";
    }