java 根据类名示例化类

即时类plusMillis()方法 (Instant Class plusMillis() method)

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

  plusMillis()方法在java.time包中可用。

• plusMillis() method is used to add the given duration in milliseconds to this Instant and return the Instant.

  plusMillis()方法用于将给定的持续时间(以毫秒为单位)添加到此Instant并返回Instant。

• plusMillis() 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.

  plusMillis()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。

• plusMillis() method may throw an exception at the time of performing addition.

  plusMillis()方法在执行加法时可能会引发异常。

  DateTimeException: This exception may throw when this Instant value reaches out of the min or max instant.

  DateTimeException ：当此Instant值超出最小或最大瞬时值时，可能引发此异常。

Syntax:

句法：

    public Instant plusMillis(long millis_val);

Parameter(s):

参数：

• long millis_val – represents the milliseconds value to add to this Instant.

  long millis_val –表示要添加到此Instant的毫秒值。

Return value:

返回值：

The return type of this method is Instant, it returns the Instant that holds the value added the given milliseconds to this Instant.

此方法的返回类型为Instant ，它返回Instant，该Instant保留将给定毫秒数添加到此Instant的值。

Example:

例：

// Java program to demonstrate the example 
// of plusMillis(long millis_val) method 
// of Instant
import java.time.*;
public class PlusMillisOfInstant {
public static void main(String args[]) {
long millis = 20000;
// Instantiates two Instant
Instant ins1 = Instant.parse("2006-04-03T05:10:15.00Z");
Instant ins2 = Instant.now();
// Display ins1, ins2 and millis
System.out.println("Instant ins1 and ins2: ");
System.out.println("ins1: " + ins1);
System.out.println("ins2: " + ins2);
System.out.println("millis to add: " + millis);
System.out.println();
// Here, this method adds the given duration
// in milliseconds with this Instant ins1 
// i.e. here we are adding the given 20000
// milliseconds with this ins1 
Instant plus_millis = ins1.plusMillis(millis);
// Display plus_millis
System.out.println("ins1.plusMillis(millis): " + plus_millis);
// Here, this method adds the given duration
// in milliseconds with this Instant ins2 
// i.e. here we are adding the given 20000 
// milliseconds with this ins2 
plus_millis = ins2.plusMillis(millis);
// Display plus_millis
System.out.println("ins2.plusMillis(millis): " + plus_millis);
}
}

Output

输出量

Instant ins1 and ins2: 
ins1: 2006-04-03T05:10:15Z
ins2: 2020-05-27T00:07:38.429608Z
millis to add: 20000ins1.plusMillis(millis): 2006-04-03T05:10:35Z
ins2.plusMillis(millis): 2020-05-27T00:07:58.429608Z

翻译自: https://www.includehelp.com/java/instant-plusmillis-method-with-example.aspx

java 根据类名示例化类