duration java

持续时间类get()方法 (Duration Class get() method)

• get() method is available in java.time package.

  get()方法在java.time包中可用。

• get() method is used to return the value for the given unit.

  get()方法用于返回给定单位的值。

• get() 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.

  get()方法是一个非静态方法，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。

• get() method may throw an exception at the time of returning value for the given unit.

  get()方法在返回给定单元的值时可能会引发异常。

  • DateTimeException: This exception may throw when the given amt couldn’t convert into a Duration.DateTimeException ：当给定的amt无法转换为Duration时，可能引发此异常。
  • UnsupportedTemporalTypeException: This exception may throw when the given unit is unsupported.UnsupportedTemporalTypeException ：当不支持给定单元时，可能引发此异常。

Syntax:

句法：

    public long get(TemporalUnit t_unit);

Parameter(s):

参数：

• TemporalUnit t_unit – represents the temporal unit of the returned value.

  TemporalUnit t_unit –表示返回值的时间单位。

Return value:

返回值：

The return type of this method is long, it returns the value for the given temporal unit.

此方法的返回类型为long ，它返回给定时间单位的值。

Example:

例：

// Java program to demonstrate the example 
// of long get(TemporalUnit t_unit) method of Duration
import java.time.*;
import java.time.temporal.*;
public class GetOfDuration {
public static void main(String args[]) {
// Instantiates two Duration objects
Duration du1 = Duration.ofHours(1);
Duration du2 = Duration.ofMinutes(5);
// Display du1 and du2
System.out.println("du1: " + du1);
System.out.println("du2: " + du2);
// gets the value of the given unit i.e. 
// here we are requesting the value of 
// du1 in SECONDS unit
long get_val = du1.get(ChronoUnit.SECONDS);
// Display get_val
System.out.println("du1.get(ChronoUnit.SECONDS): " + get_val);
// gets the value of the given unit i.e. 
// here we are requesting the value of 
// du2 in SECONDS unit
get_val = du2.get(ChronoUnit.SECONDS);
// Display get_val
System.out.println("du2.get(ChronoUnit.SECONDS): " + get_val);
}
}

Output

输出量

du1: PT1H
du2: PT5M
du1.get(ChronoUnit.SECONDS): 3600
du2.get(ChronoUnit.SECONDS): 300

翻译自: https://www.includehelp.com/java/duration-get-method-with-example.aspx

duration java