java日期
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package cn.zks.util; import java.text.DateFormat; import java.text.ParseException; import java.text.SimpleDateFormat; import java.util.Calendar; import java.util.Date; /** * 日期的相关 * @author: Mr.Lv *人是观念的载体！！！ * @date: 2019年8月29日 上午10:23:06 */ public class FormatDateUtil public FormatDateUtil() // 设置日期格式 static public String formatDateTime() // 获取当前时间 Date date = new Date(); // DateFormat format=new SimpleDateFormat("yyyy-MM-dd"); DateFormat format = new SimpleDateFormat("yyyy-MM-dd HH:mm:ss"); return format.format(date); static public String formatDateTime2() // 获取当前时间 Date date = new Date(); DateFormat format = new SimpleDateFormat("yyyy-MM-dd"); // DateFormat format=new SimpleDateFormat("yyyy-MM-dd HH:mm:ss"); return format.format(date); // 设置日期格式，返回Date类型 static public Date formatDate() throws ParseException Date date = new Date(); DateFormat format = new SimpleDateFormat("yyyy-MM-dd HH:mm:ss"); String time = format.format(date); SimpleDateFormat sdf = new SimpleDateFormat("yyyy-MM-dd HH:mm:ss"); Date date2 = sdf.parse(time); return date2; // 将一个字符串（格式化）日期转化为Date日期 static public String fomatDate(String dateTime) throws ParseException SimpleDateFormat sdf = new SimpleDateFormat(" yyyy-MM-dd HH:mm:ss ");// 传入的字符串参数的格式一定要与此相同 Date date = sdf.parse(dateTime); DateFormat format = new SimpleDateFormat("yyyy-MM-dd HH:mm:ss"); return format.format(date); // 将一个字符串（格式化）日期转化为Date日期 static public String fomatDate31(String dateTime) throws ParseException SimpleDateFormat sdf = new SimpleDateFormat("yyyy-MM-dd");// 传入的字符串参数的格式一定要与此相同 Date date = sdf.parse(dateTime); DateFormat format = new SimpleDateFormat("yyyy-MM-dd"); return format.format(date); // 将一个字符串（格式化）日期转化为Date日期 static public String fomatDate3(String dateTime) throws ParseException SimpleDateFormat sdf = new SimpleDateFormat("yyyy-MM-dd");// 传入的字符串参数的格式一定要与此相同 Date date = sdf.parse(dateTime); DateFormat format = new SimpleDateFormat("yyyy-MM-dd HH:mm:ss"); return format.format(date); // 将一个字符串（格式化）日期转化为Date日期 static public Date fomatDate2(String dateTime) throws ParseException SimpleDateFormat sdf = new SimpleDateFormat("yyyy-MM-dd");// 传入的字符串参数的格式一定要与此相同 Date date = sdf.parse(dateTime); return date; // 将一个字符串（格式化）日期转化为Date日期 static public Date fomatDate4(String dateTime) throws ParseException SimpleDateFormat sdf = new SimpleDateFormat("yyyy-MM-dd HH:mm:ss");// 传入的字符串参数的格式一定要与此相同 Date date = sdf.parse(dateTime); return date; // 格式化日期为字符串 "yyyy-MM-dd hh:mm" static public String formatDateTime(Date basicDate, String strFormat) SimpleDateFormat df = new SimpleDateFormat(strFormat); return df.format(basicDate); // 格式化日期为字符串 "yyyy-MM-dd hh:mm" static public String formatDateTime(String basicDate, String strFormat) SimpleDateFormat df = new SimpleDateFormat(strFormat); Date tmpDate = null; try tmpDate = df.parse(basicDate); catch (Exception e) // 日期型字符串格式错误 return df.format(tmpDate); // 当前日期加减n天后的日期，返回String (yyyy-mm-dd) static public String nDaysAftertoday(int n) SimpleDateFormat df = new SimpleDateFormat("yyyy-MM-dd"); Calendar rightNow = Calendar.getInstance(); // rightNow.add(Calendar.DAY_OF_MONTH,-1); rightNow.add(Calendar.DAY_OF_MONTH, +n); return df.format(rightNow.getTime()); // 当前日期加减n天后的日期，返回String (yyyy-mm-dd) static public Date nDaysAfterNowDate(int n) Calendar rightNow = Calendar.getInstance(); // rightNow.add(Calendar.DAY_OF_MONTH,-1); rightNow.add(Calendar.DAY_OF_MONTH, +n); return rightNow.getTime(); // 给定一个日期型字符串，返回加减n天后的日期型字符串 static public String nDaysAfterOneDateString(String basicDate, int n) SimpleDateFormat df = new SimpleDateFormat("yyyy-MM-dd"); Date tmpDate = null; try tmpDate = df.parse(basicDate); catch (Exception e) // 日期型字符串格式错误 long nDay = (tmpDate.getTime() / (24 * 60 * 60 * 1000) + 1 + n) * (24 * 60 * 60 * 1000); tmpDate.setTime(nDay); return df.format(tmpDate); // 给定一个日期型字符串，返回加n小时后的日期型字符串 static public String nHoursAfterOneDateString(String basicDate, int n) SimpleDateFormat df = new SimpleDateFormat("yyyy-MM-dd HH:mm:ss"); Date tmpDate = null; try tmpDate = df.parse(basicDate); catch (Exception e) // 日期型字符串格式错误 long nDay = (tmpDate.getTime() / (60 * 60 * 1000) + n) * (60 * 60 * 1000); tmpDate.setTime(nDay); return df.format(tmpDate); // 给定一个日期型字符串，返回减n小时后的日期型字符串 static public String nHoursBeforeOneDateString(String basicDate, int n) SimpleDateFormat df = new SimpleDateFormat("yyyy-MM-dd HH:mm:ss"); Date tmpDate = null; try tmpDate = df.parse(basicDate); catch (Exception e) // 日期型字符串格式错误 long nDay = (tmpDate.getTime() / (60 * 60 * 1000) - n) * (60 * 60 * 1000); tmpDate.setTime(nDay); return df.format(tmpDate); // 给定一个日期，返回加减n天后的日期 static public Date nDaysAfterOneDate(Date basicDate, int n) long nDay = (basicDate.getTime() / (24 * 60 * 60 * 1000) + 1 + n) * (24 * 60 * 60 * 1000); basicDate.setTime(nDay); return basicDate; // 计算两个日期相隔的天数 static public int nDaysBetweenTwoDate(Date firstDate, Date secondDate) int nDay = (int) ((secondDate.getTime() - firstDate.getTime()) / (24 * 60 * 60 * 1000)); return nDay; // 计算两个日期相隔的天数 static public int nDaysBetweenTwoDate(String firstString, String secondString) SimpleDateFormat df = new SimpleDateFormat("yyyy-MM-dd"); Date firstDate = null; Date secondDate = null; try firstDate = df.parse(firstString); secondDate = df.parse(secondString); catch (Exception e) // 日期型字符串格式错误 int nDay = (int) ((secondDate.getTime() - firstDate.getTime()) / (24 * 60 * 60 * 1000)); return nDay; // 计算两个日期相隔的小时数数 static public int nHoursBetweenTwoDate(String firstString, String secondString) SimpleDateFormat df = new SimpleDateFormat("yyyy-MM-dd HH:mm:ss"); Date firstDate = null; Date secondDate = null; try firstDate = df.parse(firstString); secondDate = df.parse(secondString); catch (Exception e) // 日期型字符串格式错误 int nDay = (int) ((secondDate.getTime() - firstDate.getTime()) / (60 * 60 * 1000)); return nDay;
package cn.zks.util; import java.text.DateFormat;import java.text.ParseException;import java.text.SimpleDateFormat;import java.util.Calendar;import java.util.Date; /** * 格式化日期 * * @Description: * @Source: JDK 1.8 * @Author: Zhao * @Since: 1.0 */public class FormatDateUtil public FormatDateUtil() // 设置日期格式static public String formatDateTime() // 获取当前时间Date date = new Date();// DateFormat format=new SimpleDateFormat("yyyy-MM-dd");DateFormat format = new SimpleDateFormat("yyyy-MM-dd HH:mm:ss");return format.format(date); static public String formatDateTime2() // 获取当前时间Date date = new Date();DateFormat format = new SimpleDateFormat("yyyy-MM-dd");// DateFormat format=new SimpleDateFormat("yyyy-MM-dd HH:mm:ss");return format.format(date); // 设置日期格式，返回Date类型static public Date formatDate() throws ParseException Date date = new Date();DateFormat format = new SimpleDateFormat("yyyy-MM-dd HH:mm:ss");String time = format.format(date);SimpleDateFormat sdf = new SimpleDateFormat("yyyy-MM-dd HH:mm:ss");Date date2 = sdf.parse(time);return date2; // 将一个字符串（格式化）日期转化为Date日期static public String fomatDate(String dateTime) throws ParseException SimpleDateFormat sdf = new SimpleDateFormat(" yyyy-MM-dd HH:mm:ss ");// 传入的字符串参数的格式一定要与此相同Date date = sdf.parse(dateTime);DateFormat format = new SimpleDateFormat("yyyy-MM-dd HH:mm:ss");return format.format(date); // 将一个字符串（格式化）日期转化为Date日期static public String fomatDate31(String dateTime) throws ParseException SimpleDateFormat sdf = new SimpleDateFormat("yyyy-MM-dd");// 传入的字符串参数的格式一定要与此相同Date date = sdf.parse(dateTime);DateFormat format = new SimpleDateFormat("yyyy-MM-dd");return format.format(date); // 将一个字符串（格式化）日期转化为Date日期static public String fomatDate3(String dateTime) throws ParseException SimpleDateFormat sdf = new SimpleDateFormat("yyyy-MM-dd");// 传入的字符串参数的格式一定要与此相同Date date = sdf.parse(dateTime);DateFormat format = new SimpleDateFormat("yyyy-MM-dd HH:mm:ss");return format.format(date); // 将一个字符串（格式化）日期转化为Date日期static public Date fomatDate2(String dateTime) throws ParseException SimpleDateFormat sdf = new SimpleDateFormat("yyyy-MM-dd");// 传入的字符串参数的格式一定要与此相同Date date = sdf.parse(dateTime);return date; // 将一个字符串（格式化）日期转化为Date日期static public Date fomatDate4(String dateTime) throws ParseException SimpleDateFormat sdf = new SimpleDateFormat("yyyy-MM-dd HH:mm:ss");// 传入的字符串参数的格式一定要与此相同Date date = sdf.parse(dateTime);return date; // 格式化日期为字符串 "yyyy-MM-dd hh:mm"static public String formatDateTime(Date basicDate, String strFormat) SimpleDateFormat df = new SimpleDateFormat(strFormat);return df.format(basicDate); // 格式化日期为字符串 "yyyy-MM-dd hh:mm"static public String formatDateTime(String basicDate, String strFormat) SimpleDateFormat df = new SimpleDateFormat(strFormat);Date tmpDate = null;try tmpDate = df.parse(basicDate); catch (Exception e) // 日期型字符串格式错误return df.format(tmpDate); // 当前日期加减n天后的日期，返回String (yyyy-mm-dd)static public String nDaysAftertoday(int n) SimpleDateFormat df = new SimpleDateFormat("yyyy-MM-dd");Calendar rightNow = Calendar.getInstance();// rightNow.add(Calendar.DAY_OF_MONTH,-1);rightNow.add(Calendar.DAY_OF_MONTH, +n);return df.format(rightNow.getTime()); // 当前日期加减n天后的日期，返回String (yyyy-mm-dd)static public Date nDaysAfterNowDate(int n) Calendar rightNow = Calendar.getInstance();// rightNow.add(Calendar.DAY_OF_MONTH,-1);rightNow.add(Calendar.DAY_OF_MONTH, +n);return rightNow.getTime(); // 给定一个日期型字符串，返回加减n天后的日期型字符串static public String nDaysAfterOneDateString(String basicDate, int n) SimpleDateFormat df = new SimpleDateFormat("yyyy-MM-dd");Date tmpDate = null;try tmpDate = df.parse(basicDate); catch (Exception e) // 日期型字符串格式错误long nDay = (tmpDate.getTime() / (24 * 60 * 60 * 1000) + 1 + n) * (24 * 60 * 60 * 1000);tmpDate.setTime(nDay); return df.format(tmpDate); // 给定一个日期型字符串，返回加n小时后的日期型字符串static public String nHoursAfterOneDateString(String basicDate, int n) SimpleDateFormat df = new SimpleDateFormat("yyyy-MM-dd HH:mm:ss");Date tmpDate = null;try tmpDate = df.parse(basicDate); catch (Exception e) // 日期型字符串格式错误long nDay = (tmpDate.getTime() / (60 * 60 * 1000) + n) * (60 * 60 * 1000);tmpDate.setTime(nDay); return df.format(tmpDate); // 给定一个日期型字符串，返回减n小时后的日期型字符串static public String nHoursBeforeOneDateString(String basicDate, int n) SimpleDateFormat df = new SimpleDateFormat("yyyy-MM-dd HH:mm:ss");Date tmpDate = null;try tmpDate = df.parse(basicDate); catch (Exception e) // 日期型字符串格式错误long nDay = (tmpDate.getTime() / (60 * 60 * 1000) - n) * (60 * 60 * 1000);tmpDate.setTime(nDay); return df.format(tmpDate); // 给定一个日期，返回加减n天后的日期static public Date nDaysAfterOneDate(Date basicDate, int n) long nDay = (basicDate.getTime() / (24 * 60 * 60 * 1000) + 1 + n) * (24 * 60 * 60 * 1000);basicDate.setTime(nDay); return basicDate; // 计算两个日期相隔的天数static public int nDaysBetweenTwoDate(Date firstDate, Date secondDate) int nDay = (int) ((secondDate.getTime() - firstDate.getTime()) / (24 * 60 * 60 * 1000));return nDay; // 计算两个日期相隔的天数static public int nDaysBetweenTwoDate(String firstString, String secondString) SimpleDateFormat df = new SimpleDateFormat("yyyy-MM-dd");Date firstDate = null;Date secondDate = null;try firstDate = df.parse(firstString);secondDate = df.parse(secondString); catch (Exception e) // 日期型字符串格式错误 int nDay = (int) ((secondDate.getTime() - firstDate.getTime()) / (24 * 60 * 60 * 1000));return nDay; // 计算两个日期相隔的小时数数static public int nHoursBetweenTwoDate(String firstString, String secondString) SimpleDateFormat df = new SimpleDateFormat("yyyy-MM-dd HH:mm:ss");Date firstDate = null;Date secondDate = null;try firstDate = df.parse(firstString);secondDate = df.parse(secondString); catch (Exception e) // 日期型字符串格式错误 int nDay = (int) ((secondDate.getTime() - firstDate.getTime()) / (60 * 60 * 1000));return nDay; ———————————————— 版权声明：本文为CSDN博主「武汉一浪子」的原创文章，遵循CC 4.0 by-sa版权协议，转载请附上原文出处链接及本声明。原文链接：https://blog.csdn.net/qq_36869903/article/details/79923001
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