本文实例为大家分享了java日期时间操作工具类，供大家参考，具体内容如下
虽然jdk1.8开始，加入了time包，里面对时区，本地化时间，格式化，以及时间等做了很好的封装，但仍然要写一个工具类。大家看着用。应该没有bug。如果发现了，请您一定告知，互相学习！好了，上代码：
package com.wdy.tools.utils.timeutil;
import java.text.DateFormat;
import java.text.SimpleDateFormat;
import java.util.Calendar;
import java.util.Date;
import java.util.GregorianCalendar;
public class TimeUtil {
public static int getHH() throws Exception {
DateFormat df = new SimpleDateFormat("HH");
Date date = new Date(System.currentTimeMillis());
String str = df.format(date);
return Integer.parseInt(str);
}
public static int getMM() throws Exception {
DateFormat df = new SimpleDateFormat("mm");
Date date = new Date(System.currentTimeMillis());
String str = df.format(date);
// return Integer.parseInt(str.split(":")[0]) * 4 +
// Integer.parseInt(str.split(":")[1]) / 15;
return Integer.parseInt(str);
}
public static int getSS() throws Exception {
DateFormat df = new SimpleDateFormat("ss");
Date date = new Date(System.currentTimeMillis());
String str = df.format(date);
// return Integer.parseInt(str.split(":")[0]) * 4 +
// Integer.parseInt(str.split(":")[1]) / 15;
return Integer.parseInt(str);
}
public static String getOtherDay(String date, int dayMark) throws Exception {
DateFormat df = new SimpleDateFormat("yyyy-MM-dd");
Date dt = df.parse(date);
Calendar c = Calendar.getInstance();
c.setTime(dt);
c.add(Calendar.DAY_OF_MONTH, dayMark);
String mDateTime = df.format(c.getTime());
String strStart = mDateTime.substring(0, 10);
return strStart;
}
public static String getWeekFirstDate(String date) throws Exception {
DateFormat df = new SimpleDateFormat("yyyy-MM-dd");
Date dt = df.parse(date);
Calendar c = Calendar.getInstance();
c.setTime(dt);
int days = c.get(Calendar.DAY_OF_WEEK);
String strStart = "";
if (days == 1) {
strStart = getOtherDay(date, -days - 5);
} else {
strStart = getOtherDay(date, -days + 2);
}
return strStart;
}
public static String getWeekLastDate(String date) throws Exception {
DateFormat df = new SimpleDateFormat("yyyy-MM-dd");
Date dt = df.parse(date);
Calendar c = Calendar.getInstance();
c.setTime(dt);
int days = c.get(Calendar.DAY_OF_WEEK);
String strStart = "";
if (days == 1) {
strStart = getOtherDay(date, 0);
} else {
strStart = getOtherDay(date, 8 - days);
}
return strStart;
}
public static String getOtherWeekFirstDate(String date, int weekMark)
throws Exception {
String firstDate = getWeekFirstDate(date);
DateFormat df = new SimpleDateFormat("yyyy-MM-dd");
Date dt = df.parse(firstDate);
Calendar c = Calendar.getInstance();
c.setTime(dt);
c.add(Calendar.WEEK_OF_YEAR, weekMark);
String mDateTime = df.format(c.getTime());
String strStart = mDateTime.substring(0, 10);
return strStart;
}
public static String getSeasonFirstDate(String date) throws Exception {
DateFormat df = new SimpleDateFormat("yyyy-MM-dd");
Date dt = df.parse(date);
Calendar c = Calendar.getInstance();
c.setTime(dt);
int year = c.get(Calendar.YEAR);
int month = c.get(Calendar.MONTH);
if (month < 3) {
month = 0;
} else if (month >= 3 && month < 6) {
month = 3;
} else if (month >= 6 && month < 9) {
month = 6;
} else if (month >= 9 && month < 12) {
month = 9;
}
c.set(year, month, 1);
String mDateTime = df.format(c.getTime());
String strStart = mDateTime.substring(0, 10);
return strStart;
}
public static String getOtherSeasonFirstDate(String date, int seasonMark)
throws Exception {
String firstDate = getSeasonFirstDate(date);
DateFormat df = new SimpleDateFormat("yyyy-MM-dd");
Date dt = df.parse(firstDate);
Calendar c = Calendar.getInstance();
c.setTime(dt);
int month = seasonMark * 3;
if (month != 0) {
c.add(Calendar.MONTH, month);
}
String mDateTime = df.format(c.getTime());
String strStart = mDateTime.substring(0, 10);
return strStart;
}
public static String getMonthFirstDate(String date) throws Exception {
DateFormat df = new SimpleDateFormat("yyyy-MM-dd");
Date dt = df.parse(date);
Calendar c = Calendar.getInstance();
c.setTime(dt);
int year = c.get(Calendar.YEAR);
int month = c.get(Calendar.MONTH);
c.set(year, month, 1);
String mDateTime = df.format(c.getTime());
String strStart = mDateTime.substring(0, 10);
return strStart;
}
public static String getMonthLastDate(String date) throws Exception {
DateFormat df = new SimpleDateFormat("yyyy-MM-dd");
Date dt = df.parse(date);
Calendar c = Calendar.getInstance();
c.setTime(dt);
int year = c.get(Calendar.YEAR);
int month = c.get(Calendar.MONTH);
int dayNum = c.getActualMaximum(Calendar.DAY_OF_MONTH);
c.set(year, month, dayNum);
String mDateTime = df.format(c.getTime());
String strStart = mDateTime.substring(0, 10);
return strStart;
}
public static String getOtherMonthFirstDate(String date, int monthMark)
throws Exception {
String firstDate = getMonthFirstDate(date);
DateFormat df = new SimpleDateFormat("yyyy-MM-dd");
Date dt = df.parse(firstDate);
Calendar c = Calendar.getInstance();
c.setTime(dt);
c.add(Calendar.MONTH, monthMark);
String mDateTime = df.format(c.getTime());
String strStart = mDateTime.substring(0, 10);
return strStart;
}
public static String getYearFirstDate(String date) throws Exception {
DateFormat df = new SimpleDateFormat("yyyy-MM-dd");
Date dt = df.parse(date);
Calendar c = Calendar.getInstance();
c.setTime(dt);
int year = c.get(Calendar.YEAR);
c.set(year, 0, 1);
String mDateTime = df.format(c.getTime());
String strStart = mDateTime.substring(0, 10);
return strStart;
}
public static String getOtherYearFirstDate(String date, int yearMark)
throws Exception {
String firstDate = getMonthFirstDate(date);
DateFormat df = new SimpleDateFormat("yyyy-MM-dd");
Date dt = df.parse(firstDate);
Calendar c = Calendar.getInstance();
c.setTime(dt);
c.add(Calendar.YEAR, yearMark);
String mDateTime = df.format(c.getTime());
String strStart = mDateTime.substring(0, 4);
return strStart + "-01-01";
}
public static String getYearTqDay(String date, int year) throws Exception {
DateFormat df = new SimpleDateFormat("yyyy-MM-dd");
Date dt = df.parse(date);
Calendar c = Calendar.getInstance();
c.setTime(dt);
c.add(Calendar.YEAR, year);
String mDateTime = df.format(c.getTime());
return mDateTime;
}
public static String getMonthTqDay(String date, int month) throws Exception {
DateFormat df = new SimpleDateFormat("yyyy-MM-dd");
Date dt = df.parse(date);
Calendar c = Calendar.getInstance();
c.setTime(dt);
c.add(Calendar.MONTH, month);
String mDateTime = df.format(c.getTime());
return mDateTime;
}
public static String getTbMonth(String month) throws Exception {
DateFormat df = new SimpleDateFormat("yyyy-MM");
Date dt = df.parse(month);
Calendar c = Calendar.getInstance();
c.setTime(dt);
c.add(Calendar.YEAR, -1);
String mDateTime = df.format(c.getTime());
return mDateTime;
}
public static String getHbMonth(String month) throws Exception {
DateFormat df = new SimpleDateFormat("yyyy-MM");
Date dt = df.parse(month);
Calendar c = Calendar.getInstance();
c.setTime(dt);
c.add(Calendar.MONTH, -1);
String mDateTime = df.format(c.getTime());
return mDateTime;
}
public static int getDaysOfTwoDate(String sDate, String eDate)
throws Exception {
DateFormat df1 = new SimpleDateFormat("yyyy-MM-dd");
DateFormat df2 = new SimpleDateFormat("yyyy-MM-dd");
Date date1 = df1.parse(sDate);
Date date2 = df2.parse(eDate);
if (null == date1 || null == date2) {
return -1;
}
long intervalMilli = date2.getTime() - date1.getTime();
return (int) (intervalMilli / (24 * 60 * 60 * 1000));
}
public static int getMonthOfTwoMonth(String sDate, String eDate)
throws Exception {
DateFormat df = new SimpleDateFormat("yyyy-MM");
Date date1 = df.parse(sDate);
Date date2 = df.parse(eDate);
if (null == date1 || null == date2) {
return -1;
}
Calendar c1 = Calendar.getInstance();
c1.setTime(date1);
Calendar c2 = Calendar.getInstance();
c2.setTime(date2);
int month1 = c1.get(Calendar.YEAR) * 12 + c1.get(Calendar.MONTH);
int month2 = c2.get(Calendar.YEAR) * 12 + c2.get(Calendar.MONTH);
return month2 - month1;
}
public static boolean compareDate(String sDate, String eDate, String pattern)
throws Exception {
DateFormat df1 = new SimpleDateFormat(pattern);
Date date1 = df1.parse(sDate);
Date date2 = df1.parse(eDate);
if (null == date1 || null == date2) {
return false;
}
long intervalMilli = date2.getTime() - date1.getTime();
if (intervalMilli > 0) {
return true;
}
return false;
}
public static int getMinsOfTwoDate(String sDate, String eDate)
throws Exception {
DateFormat df1 = new SimpleDateFormat("yyyy-MM-dd HH:mm:ss");
DateFormat df2 = new SimpleDateFormat("yyyy-MM-dd HH:mm:ss");
Date date1 = df1.parse(sDate);
Date date2 = df2.parse(eDate);
if (null == date1 || null == date2) {
return -1;
}
long intervalMilli = date2.getTime() - date1.getTime();
return (int) (intervalMilli / (60 * 1000));
}
public static String getToDayAllStr() throws Exception {
DateFormat df = new SimpleDateFormat("yyyy-MM-dd HH:mm:ss");
Date date = new Date(System.currentTimeMillis());
String str = df.format(date);
return str;
}
public static String getToDayDateStr() throws Exception {
DateFormat df = new SimpleDateFormat("yyyy-MM-dd");
Date date = new Date(System.currentTimeMillis());
String str = df.format(date);
return str;
}
public static String getToDayYmd() throws Exception {
DateFormat df = new SimpleDateFormat("yyyyMMdd");
Date date = new Date(System.currentTimeMillis());
String str = df.format(date);
return str;
}
public static String getToDayStrByPattern(String pattern) throws Exception {
DateFormat df = new SimpleDateFormat(pattern);
Date date = new Date(System.currentTimeMillis());
String str = df.format(date);
return str;
}
public static String getToDayHmsStr() throws Exception {
DateFormat df = new SimpleDateFormat("HH:mm:ss");
Date date = new Date(System.currentTimeMillis());
String str = df.format(date);
return str;
}
public static String getToDayHms() throws Exception {
DateFormat df = new SimpleDateFormat("HHmmss");
Date date = new Date(System.currentTimeMillis());
String str = df.format(date);
return str;
}
public static String getToDayHmsByPattern(String pattern) throws Exception {
DateFormat df = new SimpleDateFormat(pattern);
Date date = new Date(System.currentTimeMillis());
String str = df.format(date);
return str;
}
public static String getHmsStrForDateTime(String dayStr) throws Exception {
DateFormat df = new SimpleDateFormat("HHmmss");
DateFormat df2 = new SimpleDateFormat("yyyy-MM-dd HH:mm:ss");
String str = df.format(df2.parse(dayStr));
return str;
}
public static String changeDateType(String str, String oldPattern, String newPattern) throws Exception {
DateFormat df = new SimpleDateFormat(oldPattern);
DateFormat df1 = new SimpleDateFormat(newPattern);
return df1.format(df.parse(str));
}
public static String getOtherHour(String date, int dayMark)
throws Exception {
DateFormat df = new SimpleDateFormat("yyyy-MM-dd HH:mm:ss");
Date dt = df.parse(date);
Calendar c = Calendar.getInstance();
c.setTime(dt);
c.add(Calendar.HOUR_OF_DAY, dayMark);
String mDateTime = df.format(c.getTime());
String strStart = mDateTime;
return strStart;
}
public static String getOtherMinute(String date, int minuteMark)
throws Exception {
DateFormat df = new SimpleDateFormat("yyyy-MM-dd HH:mm:ss");
Date dt = df.parse(date);
Calendar c = Calendar.getInstance();
c.setTime(dt);
c.add(Calendar.MINUTE, minuteMark);
String mDateTime = df.format(c.getTime());
String strStart = mDateTime;
return strStart;
}
public static Date parseDate(String date, String pattern) throws Exception {
Date returnDate = null;
if (pattern == null || pattern.equals("") || pattern.equals("null")) {
pattern = "yyyy-MM-dd HH:mm:ss";
}
java.text.SimpleDateFormat sdf = new java.text.SimpleDateFormat(pattern);
try {
returnDate = sdf.parse(date);
} catch (Exception e) {
e.printStackTrace();
}
return returnDate;
}
public static String formatDate(Date date, String pattern) throws Exception {
String returnDate = null;
if (date == null) {
return "";
}
if (pattern == null || pattern.equals("") || pattern.equals("null")) {
pattern = "yyyy-MM-dd HH:mm:ss";
}
java.text.SimpleDateFormat sdf = new java.text.SimpleDateFormat(pattern);
returnDate = sdf.format(date);
return returnDate;
}
public static String getSystemMonth() {
java.util.Date date = new java.util.Date();
SimpleDateFormat formatter = new SimpleDateFormat("yyyy-MM");
String mDateTime1 = formatter.format(date);
return mDateTime1;
}
public static String getYearLastMonth(String month, int m) throws Exception {
SimpleDateFormat format = new SimpleDateFormat("yyyy-MM");
Date newDate = new Date();
newDate = format.parse(month);
Calendar c = Calendar.getInstance();
c.setTime(newDate);
c.add(Calendar.YEAR, m);
newDate.setTime(c.getTimeInMillis());
return format.format(newDate).substring(0, 4) + "-12";
}
public static String getOtherMonth(String month, int m) throws Exception {
SimpleDateFormat format = new SimpleDateFormat("yyyy-MM");
Date newDate = new Date();
newDate = format.parse(month);
Calendar c = Calendar.getInstance();
c.setTime(newDate);
c.add(Calendar.MONTH, m);
newDate.setTime(c.getTimeInMillis());
return format.format(newDate);
}
public static String getOtherMonthYMD(String month, int m) throws Exception {
SimpleDateFormat format = new SimpleDateFormat("yyyy-MM-dd");
Date newDate = new Date();
newDate = format.parse(month);
Calendar c = Calendar.getInstance();
c.setTime(newDate);
c.add(Calendar.MONTH, m);
newDate.setTime(c.getTimeInMillis());
return format.format(newDate);
}
public static int getDaysOfMonth(String monthStr) throws Exception {
SimpleDateFormat format = new SimpleDateFormat("yyyy-MM");
Date date = format.parse(monthStr);
Calendar calendar = new GregorianCalendar();
calendar.setTime(date);
int dayNum = calendar.getActualMaximum(Calendar.DAY_OF_MONTH);
return dayNum;
}
public static String getBeforeAfterTimeForMin(String time, int m)
throws Exception {
Calendar now = Calendar.getInstance();
SimpleDateFormat format = new SimpleDateFormat("HH:mm:ss");
Date newDate = new Date();
newDate = format.parse(time);
now.setTime(newDate);
now.add(Calendar.MINUTE, m);
return format.format(now.getTime());
}
public static String getBeforeAfterDateTimeByTime(String time, int m,
String pattern) throws Exception {
Calendar now = Calendar.getInstance();
SimpleDateFormat sdf = new SimpleDateFormat(pattern);
Date newDate = new Date();
newDate = sdf.parse(time);
now.setTime(newDate);
now.add(Calendar.MINUTE, m);
return sdf.format(now.getTime());
}
}
这就是整个工具类了，供君参考。
以上就是本文的全部内容，希望对大家的学习有所帮助，也希望大家多多支持考高分网。
