java常用工具类:时间戳与时间相互转换,需要的拿走!

package com.lcry.util;

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

/**
 * 时间戳与时间相互转换工具类
 * Created on 2018/12/24.
 *
 * @author lcry
 */
public class DateAndStampUtil {
    /*
     * 将时间转换为时间戳
     */

    /**
     * (int)时间戳转Date
     *
     * @param timestamp
     * @return
     */
    public static Date stampForDate(Integer timestamp) {
        return new Date((long) timestamp * 1000);
    }

    /**
     * (long)时间戳转Date
     *
     * @param timestamp
     * @return
     */
    public static Date longStampForDate(long timestamp) {
        return new Date(timestamp);
    }

    /**
     * date转String
     *
     * @param date
     * @return
     */
    public static String dateForString(Date date) {
        SimpleDateFormat sdf = new SimpleDateFormat("yyyy-MM-dd HH:mm:ss");
        return sdf.format(date);
    }

    /**
     * String转Date
     *
     * @param time
     * @return
     */
    public static Date stringForDate(String time) {
        SimpleDateFormat sdf = new SimpleDateFormat("yyyy-MM-dd HH:mm:ss");
        Date date = null;
        try {
            date = sdf.parse(time);
        } catch (ParseException e) {
            e.printStackTrace();
        }
        return date;
    }

    /**
     * Date转时间戳
     *
     * @param data
     * @return
     */
    public static Integer dateForStamp(Date data) {
        return (int) (data.getTime() / 1000);
    }

    /**
     * (string)时间转时间戳
     *
     * @param s
     * @return
     * @throws ParseException
     */
    public static String dateToStamp(String s) throws ParseException {
        String res;
        SimpleDateFormat simpleDateFormat = new SimpleDateFormat("yyyy-MM-dd HH:mm:ss");
        Date date = simpleDateFormat.parse(s);
        long ts = date.getTime();
        res = String.valueOf(ts);
        return res;
    }

    /**
     * (string)时间戳转日期
     *
     * @param s
     * @return
     */
    public static String stampToDate(String s) {
        String res;
        SimpleDateFormat simpleDateFormat = new SimpleDateFormat("yyyy-MM-dd HH:mm:ss");
        long lt = new Long(s);
        Date date = new Date(lt);
        res = simpleDateFormat.format(date);
        return res;
    }

}