Java即时类| toString（）方法与示例

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

toString() method is available in java.time package.
toString()方法在java.time包中可用。
toString() method is used to represent this Instant as a String by using the standards ISO-8601 format.
toString()方法用于通过使用标准ISO-8601格式将此Instant表示为String。
toString() 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.
toString()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。
toString() method does not throw an exception at the time of representing this object as a string.
在将此对象表示为字符串时， toString()方法不会引发异常。

Syntax:

句法：

    public String toString();

Parameter(s):

参数：

None
没有

Return value:

返回值：

The return type of this method is String, it represents this Instant as a String by using ISO-8601 standards format.

此方法的返回类型为String ，它通过使用ISO-8601标准格式将该Instant表示为String。

Example:

例：

// Java program to demonstrate the example 
// of String toString() method 
// of Instant
import java.time.*;
public class ToStringOfInstant {
public static void main(String args[]) {
// Instantiates two Instant
Instant ins1 = Instant.parse("2006-04-03T05:10:15.00Z");
Instant ins2 = Instant.now();
// Display ins1,ins2 
System.out.println("Instant ins1 and ins2: ");
System.out.println("ins1: " + ins1);
System.out.println("ins2: " + ins2);
System.out.println();
// Here, this method toString()
// represents this Instant ins1 
// as a String
String to_string = ins1.toString();
// Display to_string
System.out.println("ins1.toString(): " + to_string);
// Here, this method toString()
// represents this Instant ins2 
// as a String
to_string = ins2.toString();
// Display to_string
System.out.println("ins2.toString(): " + to_string);
}
}

Output

输出量

Instant ins1 and ins2: 
ins1: 2006-04-03T05:10:15Z
ins2: 2020-05-27T05:55:54.328647Zins1.toString(): 2006-04-03T05:10:15Z
ins2.toString(): 2020-05-27T05:55:54.328647Z