1小时 1分钟之前 java 处理

import java.text.ParseException;
import java.text.SimpleDateFormat;
import java.util.Calendar;
import java.util.Date;
 
public class DateUtils {
    private static final long ONE_MINUTE = 60;
    private static final long ONE_HOUR = 3600;
    private static final long ONE_DAY = 86400;
    private static final long ONE_MONTH = 2592000;
    private static final long ONE_YEAR = 31104000;
 
    public static Calendar calendar = Calendar.getInstance();
 
    /**
     * 
     * @return yyyy-mm-dd
     *  2012-12-25
     */
    public static String getDate() {
        return getYear() + "-" + getMonth() + "-" + getDay();
    }
 
    /**
     * @param format
     * @return 
     * yyyy年MM月dd HH:mm 
     * MM-dd HH:mm 2012-12-25
     * 
     */
    public static String getDate(String format) {
        SimpleDateFormat simple = new SimpleDateFormat(format);
        return simple.format(calendar.getTime());
    }
 
    /**
     * 
     * @return yyyy-MM-dd HH:mm 
     * 2012-12-29 23:47
     */
    public static String getDateAndMinute() {
        SimpleDateFormat simple = new SimpleDateFormat("yyyy-MM-dd HH:mm");
        return simple.format(calendar.getTime());
    }
 
    /**
     * 
     * @return
     *  yyyy-MM-dd HH:mm:ss 
     *  2012-12-29 23:47:36
     */
    public static String getFullDate() {
        SimpleDateFormat simple = new SimpleDateFormat("yyyy-MM-dd HH:mm:ss");
        return simple.format(calendar.getTime());
    }
 
    /**
     * 距离今天多久
     * @param date
     * @return 
     * 
     */
    public static String fromToday(Date date) {
        Calendar calendar = Calendar.getInstance();
        calendar.setTime(date);
 
        long time = date.getTime() / 1000;
        long now = new Date().getTime() / 1000;
        long ago = now - time;
        if (ago <= ONE_HOUR)
            return ago / ONE_MINUTE + "分钟前";
        else if (ago <= ONE_DAY)
            return ago / ONE_HOUR + "小时" + (ago % ONE_HOUR / ONE_MINUTE)
                    + "分钟前";
        else if (ago <= ONE_DAY * 2)
            return "昨天" + calendar.get(Calendar.HOUR_OF_DAY) + "点"
                    + calendar.get(Calendar.MINUTE) + "分";
        else if (ago <= ONE_DAY * 3)
            return "前天" + calendar.get(Calendar.HOUR_OF_DAY) + "点"
                    + calendar.get(Calendar.MINUTE) + "分";
        else if (ago <= ONE_MONTH) {
            long day = ago / ONE_DAY;
            return day + "天前" + calendar.get(Calendar.HOUR_OF_DAY) + "点"
                    + calendar.get(Calendar.MINUTE) + "分";
        } else if (ago <= ONE_YEAR) {
            long month = ago / ONE_MONTH;
            long day = ago % ONE_MONTH / ONE_DAY;
            return month + "个月" + day + "天前"
                    + calendar.get(Calendar.HOUR_OF_DAY) + "点"
                    + calendar.get(Calendar.MINUTE) + "分";
        } else {
            long year = ago / ONE_YEAR;
            int month = calendar.get(Calendar.MONTH) + 1;// JANUARY which is 0 so month+1
            return year + "年前" + month + "月" + calendar.get(Calendar.DATE)
                    + "日";
        }
 
    }
 
    /**
     * 距离截止日期还有多长时间
     * 
     * @param date
     * @return
     */
    public static String fromDeadline(Date date) {
        long deadline = date.getTime() / 1000;
        long now = (new Date().getTime()) / 1000;
        long remain = deadline - now;
        if (remain <= ONE_HOUR)
            return "只剩下" + remain / ONE_MINUTE + "分钟";
        else if (remain <= ONE_DAY)
            return "只剩下" + remain / ONE_HOUR + "小时"
                    + (remain % ONE_HOUR / ONE_MINUTE) + "分钟";
        else {
            long day = remain / ONE_DAY;
            long hour = remain % ONE_DAY / ONE_HOUR;
            long minute = remain % ONE_DAY % ONE_HOUR / ONE_MINUTE;
            return "只剩下" + day + "天" + hour + "小时" + minute + "分钟";
        }
 
    }
 
    /**
     * 距离今天的绝对时间
     * 
     * @param date
     * @return
     */
    public static String toToday(Date date) {
        long time = date.getTime() / 1000;
        long now = (new Date().getTime()) / 1000;
        long ago = now - time;
        if (ago <= ONE_HOUR)
            return ago / ONE_MINUTE + "分钟";
        else if (ago <= ONE_DAY)
            return ago / ONE_HOUR + "小时" + (ago % ONE_HOUR / ONE_MINUTE) + "分钟";
        else if (ago <= ONE_DAY * 2)
            return "昨天" + (ago - ONE_DAY) / ONE_HOUR + "点" + (ago - ONE_DAY)
                    % ONE_HOUR / ONE_MINUTE + "分";
        else if (ago <= ONE_DAY * 3) {
            long hour = ago - ONE_DAY * 2;
            return "前天" + hour / ONE_HOUR + "点" + hour % ONE_HOUR / ONE_MINUTE
                    + "分";
        } else if (ago <= ONE_MONTH) {
            long day = ago / ONE_DAY;
            long hour = ago % ONE_DAY / ONE_HOUR;
            long minute = ago % ONE_DAY % ONE_HOUR / ONE_MINUTE;
            return day + "天前" + hour + "点" + minute + "分";
        } else if (ago <= ONE_YEAR) {
            long month = ago / ONE_MONTH;
            long day = ago % ONE_MONTH / ONE_DAY;
            long hour = ago % ONE_MONTH % ONE_DAY / ONE_HOUR;
            long minute = ago % ONE_MONTH % ONE_DAY % ONE_HOUR / ONE_MINUTE;
            return month + "个月" + day + "天" + hour + "点" + minute + "分前";
        } else {
            long year = ago / ONE_YEAR;
            long month = ago % ONE_YEAR / ONE_MONTH;
            long day = ago % ONE_YEAR % ONE_MONTH / ONE_DAY;
            return year + "年前" + month + "月" + day + "天";
        }
 
    }
 
    public static String getYear() {
        return calendar.get(Calendar.YEAR) + "";
    }
 
    public static String getMonth() {
        int month = calendar.get(Calendar.MONTH) + 1;
        return month + "";
    }
 
    public static String getDay() {
        return calendar.get(Calendar.DATE) + "";
    }
 
    public static String get24Hour() {
        return calendar.get(Calendar.HOUR_OF_DAY) + "";
    }
 
    public static String getMinute() {
        return calendar.get(Calendar.MINUTE) + "";
    }
 
    public static String getSecond() {
        return calendar.get(Calendar.SECOND) + "";
    }
 
    public static void main(String[] args) throws ParseException {
        String deadline = "2012-12-30 12:45:59";
        Date date = new Date();
        SimpleDateFormat simple = new SimpleDateFormat("yyyy-MM-dd HH:mm:ss");
        date = simple.parse(deadline);
//        System.out.println(DateUtils.fromDeadline(date));
 
        String before = "2015-06-19 11:32:59";
        date = simple.parse(before);
        System.out.println(DateUtils.fromToday(date));
 
//        System.out.println(DateUtils.getFullDate());
//        System.out.println(DateUtils.getDate());
    }
 
}