java 根据类名示例化类_Java LocalDateTime类| minusMinutes（）方法与示例

java 根据类名示例化类

LocalDateTime类minusMinutes()方法 (LocalDateTime Class minusMinutes() method)

minusMinutes() method is available in java.time package.
minusMinutes()方法在java.time包中可用。
minusMinutes() method is used to subtract the given minutes from this date-time object and return the LocalDateTime.
minusMinutes()方法用于从该日期时间对象中减去给定的分钟数，并返回LocalDateTime。
minusMinutes() method is a non-static method, it is accessible with the class object only and if we try to access the method with the class name then we will get an error.
minusMinutes()方法是一种非静态方法，只能通过类对象访问，如果尝试使用类名称访问该方法，则会收到错误消息。
minusMinutes() method may throw an exception at the time of performing subtraction.
minusMinutes()方法在执行减法时可能会引发异常。

DateTimeException – This exception may throw when the calculated result value exceeds the limit.
DateTimeException –当计算结果值超出限制时，可能引发此异常。

Syntax:

句法：

    public LocalDateTime minusMinutes(long min_val);

Parameter(s):

参数：

long min_val – represents the minutes to be subtracted from this LocalDateTime.
long min_val –表示要从此LocalDateTime中减去的分钟。

Return value:

返回值：

The return type of this method is LocalDateTime, it returns the LocalDateTime that holds the value subtracted the given minutes from this LocalDateTime.

此方法的返回类型为LocalDateTime ，它返回LocalDateTime，该LocalDateTime保留从此LocalDateTime中减去给定分钟数的值。

Example:

例：

// Java program to demonstrate the example 
// of minusMinutes(long min_val) method 
// of LocalDateTime
import java.time.*;
public class MinusMinutesOfLocalDateTime {
public static void main(String args[]) {
long minutes = 5;
// Instantiates two LocalDateTime
LocalDateTime da_ti1 = LocalDateTime.parse("2005-10-05T10:10:10.00");
LocalDateTime da_ti2 = LocalDateTime.now();
// Display da_ti1, da_ti2 and
// minutes
System.out.println("LocalDateTime da_ti1 and da_ti2: ");
System.out.println("da_ti1: " + da_ti1);
System.out.println("da_ti2: " + da_ti2);
System.out.println("minutes to subtract: " + minutes);
System.out.println();
// Here, this method subtracts the given
// minutes from this date-time object  
// i.e. here we are subracting 5 minutes 
// from this object da_ti1
LocalDateTime minus_min = da_ti1.minusMinutes(minutes);
// Display minus_min
System.out.print("da_ti1.minusMinutes(minutes): ");
System.out.println(minus_min);
// Here, this method subtracts the given
// minutes from this date-time object  
// i.e. here we are subracting 5 minutes
// from this object da_ti2
minus_min = da_ti2.minusMinutes(minutes);
// Display minus_min
System.out.print("da_ti2.minusMinutes(minutes): ");
System.out.println(minus_min);
}
}

Output

输出量

LocalDateTime da_ti1 and da_ti2: 
da_ti1: 2005-10-05T10:10:10
da_ti2: 2020-06-07T16:10:15.112967
minutes to subtract: 5da_ti1.minusMinutes(minutes): 2005-10-05T10:05:10
da_ti2.minusMinutes(minutes): 2020-06-07T16:05:15.112967