Java日期操作方法工具类实例【包含日期比较大小，相加减，判断，验证，获取年份等】

这篇文章主要介绍了Java日期操作方法工具类,结合完整实例形式分析了java针对日期的各种常见操作,包括日期比较大小,相加减,判断,验证,获取年份、天数、星期等,需要的朋友可以参考下

本文实例讲述了Java日期操作方法工具类。分享给大家供大家参考，具体如下：

 package com.gcloud.common; import org.apache.http.util.TextUtils; import java.text.ParseException; import java.text.SimpleDateFormat; import java.util.Calendar; import java.util.Date; import java.util.regex.Pattern; /** * 日期时间工具类 * Created by charlin on 2017/9/3. */ public class DateUtil { public static final String CHINA_DATE_FORMAT = "yyyy年MM月dd日"; public static final String DATETIME_FORMAT = "yyyy-MM-dd HH:mm:ss"; public static final String DATE_FORMAT = "yyyy-MM-dd"; public static final String TIME_FORMAT = "HH:mm:ss"; //----------------判断----------------------------------------------- /** * 是否是润年 * @param yearNum * @return */ public static boolean isLeapYear(int yearNum) { boolean isLeep = false; if ((yearNum % 4 == 0) && (yearNum % 100 != 0)) isLeep = true; else if (yearNum % 400 == 0) isLeep = true; else { isLeep = false; } return isLeep; } /** * 判断是否是日期 * * @param date * @return */ public static boolean isDate(String date) { //判断年月日的正则表达式，接受输入格式为2010-12-24，可接受平年闰年的日期 String regex = "(([0-9]{3}[1-9]|[0-9]{2}[1-9][0-9]{1}|[0-9]{1}[1-9][0-9]{2}|[1-9][0-9]{3})-(((0[13578]|1[02])-(0[1-9]|[12][0-9]|3[01]))|((0[469]|11)-(0[1-9]|[12][0-9]|30))|(02-(0[1-9]|[1][0-9]|2[0-8]))))|((([0-9]{2})(0[48]|[2468][048]|[13579][26])|((0[48]|[2468][048]|[3579][26])00))-02-29)"; Pattern pattern = Pattern.compile(regex); return pattern.matcher(date).matches(); } /** * 验证是不是生日 * * @param birthday * @return */ public static boolean verifyBirthDay(String birthday) { if (TextUtils.isEmpty(birthday)) return false; if (!birthday.contains("-")) return false; String[] arr = birthday.split("-"); if (null == arr || arr.length != 3 || arr[0].length() != 4 || arr[1].length() != 2 || arr[2].length() != 2) return false; int year = getYear(new Date()); int birthYear = Integer.parseInt(arr[0]); if (birthYear <= 1900 || birthYear > year) return false; String curDate = formatDate(new Date(), DATE_FORMAT); if (birthday.compareTo(curDate) > 0) return false; return isDate(birthday); } //-------------------自动转化-------------------------------------------- /** * 把字符串自动转化为时间格式 * * @param dateStr * @return */ public static Date parseDateByAuto(String dateStr) { if (StringUtil.isEmpty(dateStr)) { return null; } String format = DATE_FORMAT; if (dateStr.indexOf("/") > -1) { format = format.replace("-", "/"); } if (dateStr.indexOf(":") != -1) { format += " HH:mm"; } //存在秒 if (dateStr.indexOf(":") != dateStr.lastIndexOf(":")) { format += ":ss"; } return parseDate(dateStr, format); } /** * 自动识别格式 * @param date * @return */ public static String formatDateByAuto(Date date){ String format = DATE_FORMAT; if( !(date instanceof java.sql.Date) && (date.getSeconds()>0||date.getMinutes()>0||date.getHours()>0)){ format = DATETIME_FORMAT; } return formatDate(date, format); } //------------当前日期与时间 -------------------------------- /**取当前日期*/ public static Date getCurrDate() {return parseDate(formatDate(new Date())); } /**取当前时间*/ public static Date getCurrDateTime() {return parseDate(formatDate(new Date())); } /**取当前日期*/ public static String getCurrDateStr() { return formatDate(new Date()); } /**取当前时间*/ public static String getCurrDateTimeStr() { return formatDate(new Date(), DATETIME_FORMAT);} public static String formatCurrDate() {return formatDate(new Date(),DATE_FORMAT); } public static String formatCurrDateTime() {return formatDate(new Date(),DATETIME_FORMAT);} public static String formatCurrDateToS(String strFormat) {return formatDate(new Date(), strFormat); } //-----------时间计算-------------------------------------------- /** * 时间相减 * @param strDateBegin * @param strDateEnd * @param iType * @return */ public static int getDiffDate(String strDateBegin, String strDateEnd, int iType) { Calendar calBegin = Calendar.getInstance(); calBegin.setTime(parseDate(strDateBegin, DATETIME_FORMAT)); Calendar calEnd = Calendar.getInstance(); calBegin.setTime(parseDate(strDateEnd, DATETIME_FORMAT)); long lBegin = calBegin.getTimeInMillis(); long lEnd = calEnd.getTimeInMillis(); if (iType == Calendar.SECOND) return (int) ((lEnd - lBegin) / 1000L); if (iType == Calendar.MINUTE) return (int) ((lEnd - lBegin) / 60000L); if (iType == Calendar.HOUR) return (int) ((lEnd - lBegin) / 3600000L); if (iType == Calendar.DAY_OF_MONTH) { return (int) ((lEnd - lBegin) / 86400000L); } return -1; } /** * 添加天数或月份或年得到新的时间 * * @param strDate * @param count * @param dayType Calendar.YEAR * @return */ public static String getAddDateTime(String strDate, int count, int dayType) { Calendar cal = Calendar.getInstance(); cal.setTime(parseDate(strDate)); cal.add(dayType, count); SimpleDateFormat sdf = null; if ((dayType == Calendar.YEAR) || (dayType == Calendar.MONTH) || (dayType == Calendar.DAY_OF_MONTH)) sdf = new SimpleDateFormat(DATE_FORMAT); else sdf = new SimpleDateFormat(DATETIME_FORMAT); return sdf.format(cal.getTime()); } /** * 日期增加天数 * @param date * @param iCount * @return */ public static Date getAddDate(Date date, int iCount) { Calendar cal = Calendar.getInstance(); cal.setTime(date); cal.add(Calendar.DAY_OF_MONTH, iCount); return cal.getTime(); } /** * 比较日期 * * @param dateStr1 * @param dateStr2 * @return */ public static int compareDate(String dateStr1, String dateStr2) { Date date1 = parseDate(dateStr1); Date date2 = parseDate(dateStr2); if (date1.getTime() > date2.getTime()) return -1; else if (date1.getTime()  date2.getTime()) return -1; else if (date1.getTime()

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