在 Java 中找到两个日期差的持续时间
原文:https://www . geesforgeks . org/find-Java 中两个日期之间的差异持续时间/
给定两个日期开始 _ 日期和结束 _ 日期，时间以字符串形式表示，任务是在 Java 中找出两个日期之间的差异。
示例:
输入:start _ date =“10-01-2018 01:10:20”，end _ date =“10-06-2020 06:30:50” 输出: 2 年 152 天 5 小时 20 分 30 秒
输入:start _ date =“10-01-2019 01:00:00”，end _ date =“10-06-2020 06:00:00” T3】输出: 1 年 152 天 5 小时 0 分 0 秒
方法一:使用 SimpleDateFormat 和 Date 类查找两个日期的区别。以下是步骤:
- 创建一个简单日期格式类的对象，并将字符串格式转换为日期对象。
- 从一个字符串中解析 start_date 和 end_date 来产生日期，这可以通过使用 simpleDateFormat 类的 parse() 方法来完成。
- 使用 Java 中的方法 getTime()作为D2 . getTime()–D1 . getTime()，以毫秒为单位求出两个日期之间的时间差。
- 使用日期-时间数学公式找出两个日期之间的差异。它返回两个指定日期之间的年、日、小时、分钟和秒。
- 打印最终结果。
下面是上述方法的实现:
Java 语言(一种计算机语言，尤用于创建网站)
// Java program for the above approach
import java.text.ParseException;
import java.text.SimpleDateFormat;
import java.util.Date;
class GFG {
// Function to print difference in
// time start_date and end_date
static void
findDifference(String start_date,
String end_date)
{
// SimpleDateFormat converts the
// string format to date object
SimpleDateFormat sdf
= new SimpleDateFormat(
"dd-MM-yyyy HH:mm:ss");
// Try Block
try {
// parse method is used to parse
// the text from a string to
// produce the date
Date d1 = sdf.parse(start_date);
Date d2 = sdf.parse(end_date);
// Calucalte time difference
// in milliseconds
long difference_In_Time
= d2.getTime() - d1.getTime();
// Calucalte time difference in
// seconds, minutes, hours, years,
// and days
long difference_In_Seconds
= (difference_In_Time
/ 1000)
% 60;
long difference_In_Minutes
= (difference_In_Time
/ (1000 * 60))
% 60;
long difference_In_Hours
= (difference_In_Time
/ (1000 * 60 * 60))
% 24;
long difference_In_Years
= (difference_In_Time
/ (1000l * 60 * 60 * 24 * 365));
long difference_In_Days
= (difference_In_Time
/ (1000 * 60 * 60 * 24))
% 365;
// Print the date difference in
// years, in days, in hours, in
// minutes, and in seconds
System.out.print(
"Difference "
+ "between two dates is: ");
System.out.println(
difference_In_Years
+ " years, "
+ difference_In_Days
+ " days, "
+ difference_In_Hours
+ " hours, "
+ difference_In_Minutes
+ " minutes, "
+ difference_In_Seconds
+ " seconds");
}
// Catch the Exception
catch (ParseException e) {
e.printStackTrace();
}
}
// Driver Code
public static void main(String[] args)
{
// Given start Date
String start_date
= "10-01-2018 01:10:20";
// Given end Date
String end_date
= "10-06-2020 06:30:50";
// Function Call
findDifference(start_date, end_date);
}
}
Output:
两个日期的差别是:2 年 152 天 5 小时 20 分 30 秒
方法二:利用 Java 内置的类 TimeUnit ，我们可以更好的找到两个日期的差异。
下面是上述方法的实现:
Java 语言(一种计算机语言，尤用于创建网站)
// Java program to find the
// difference between two dates
import java.text.ParseException;
import java.text.SimpleDateFormat;
import java.util.concurrent.TimeUnit;
import java.util.Date;
class GFG {
// Function to print difference in
// time start_date and end_date
static void findDifference(String start_date,
String end_date)
{
// SimpleDateFormat converts the
// string format to date object
SimpleDateFormat sdf
= new SimpleDateFormat(
"dd-MM-yyyy HH:mm:ss");
// Try Class
try {
// parse method is used to parse
// the text from a string to
// produce the date
Date d1 = sdf.parse(start_date);
Date d2 = sdf.parse(end_date);
// Calucalte time difference
// in milliseconds
long difference_In_Time
= d2.getTime() - d1.getTime();
// Calucalte time difference in seconds,
// minutes, hours, years, and days
long difference_In_Seconds
= TimeUnit.MILLISECONDS
.toSeconds(difference_In_Time)
% 60;
long difference_In_Minutes
= TimeUnit
.MILLISECONDS
.toMinutes(difference_In_Time)
% 60;
long difference_In_Hours
= TimeUnit
.MILLISECONDS
.toHours(difference_In_Time)
% 24;
long difference_In_Days
= TimeUnit
.MILLISECONDS
.toDays(difference_In_Time)
% 365;
long difference_In_Years
= TimeUnit
.MILLISECONDS
.toDays(difference_In_Time)
/ 365l;
// Print the date difference in
// years, in days, in hours, in
// minutes, and in seconds
System.out.print(
"Difference"
+ " between two dates is: ");
// Print result
System.out.println(
difference_In_Years
+ " years, "
+ difference_In_Days
+ " days, "
+ difference_In_Hours
+ " hours, "
+ difference_In_Minutes
+ " minutes, "
+ difference_In_Seconds
+ " seconds");
}
catch (ParseException e) {
e.printStackTrace();
}
}
// Driver Code
public static void main(String[] args)
{
// Given start_date
String start_date
= "10-01-2018 01:10:20";
// Given end_date
String end_date
= "10-06-2020 06:30:50";
// Function Call
findDifference(start_date,
end_date);
}
}
Output:
两个日期的差别是:2 年 152 天 5 小时 20 分 30 秒
方法三:用 Java 中的周期类找到两天的区别。 Period.between() 方法用于计算年、月和日这两个日期之间的差异。
下面是上述方法的实现:
Java 语言(一种计算机语言，尤用于创建网站)
// Java program for the above approach
import java.time.*;
import java.util.*;
class GFG {
// Function to print difference in
// time start_date and end_date
static void
findDifference(LocalDate start_date,
LocalDate end_date)
{
// find the period between
// the start and end date
Period diff
= Period
.between(start_date,
end_date);
// Print the date difference
// in years, months, and days
System.out.print(
"Difference "
+ "between two dates is: ");
// Print the result
System.out.printf(
"%d years, %d months"
+ " and %d days ",
diff.getYears(),
diff.getMonths(),
diff.getDays());
}
// Driver Code
public static void main(String[] args)
{
// Start date
LocalDate start_date
= LocalDate.of(2018, 01, 10);
// End date
LocalDate end_date
= LocalDate.of(2020, 06, 10);
// Function Call
findDifference(start_date,
end_date);
}
}
Output:
两个日期之间的差异是:2 年 5 个月零天
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