java 根据类名示例化类
即时类getEpochSecond()方法 (Instant Class getEpochSecond() method)
getEpochSecond() method is available in java.time package.
getEpochSecond()方法在java.time包中可用。
getEpochSecond() method is used to get the number of seconds from the java epoch standard format of 1970-01-01T00:00:00Z.
getEpochSecond()方法用于从1970-01-01T00：00：00Z的Java epoch标准格式中获取秒数。
getEpochSecond() 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.
getEpochSecond()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。
getEpochSecond() method does not throw an exception at the time of returning seconds.
getEpochSecond()方法在返回秒数时不会引发异常。
Syntax:
句法：
public long getEpochSecond();
Parameter(s):
参数：
None
没有
Return value:
返回值：
The return type of this method is long, it returns the seconds from the epoch standard format of 1970-01-01T00:00:00Z.
此方法的返回类型为long ，它从1970-01-01T00：00：00Z的纪元标准格式返回秒。
Example:
例：
// Java program to demonstrate the example
// of getEpochSecond() method
// of Instant
import java.time.*;
import java.time.temporal.*;
public class GetEpochSecondOfInstant {
public static void main(String args[]) {
// Instantiates two Instant
Instant ins1 = Instant.parse("2006-04-03T05:10:15.00Z");
Instant ins2 = Instant.parse("2007-06-05T10:20:30.00Z");
// 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 gets the value of the
// epoch second from this Instant(ins1) i.e.
// here the seconds will be retrieved
// from the java epoch of 1970-01-01T00:00:00Z
// to 2006-04-03T05:10:15.120Z
long epocsec_val = ins1.getEpochSecond();
// Display epocsec_val
System.out.println("ins1.getEpochSecond(): " + epocsec_val);
// Here, this method gets the value of the
// epoch second from this Instant(ins2) i.e.
// here the seconds will be retrieved
// from the java epoch of 1970-01-01T00:00:00Z
// to 2007-06-05T10:20:30.00Z
epocsec_val = ins2.getEpochSecond();
// Display epocsec_val
System.out.println("ins2.getEpochSecond(): " + epocsec_val);
}
}
Output
输出量
Instant ins1 and ins2:
ins1: 2006-04-03T05:10:15Z
ins2: 2007-06-05T10:20:30Zins1.getEpochSecond(): 1144041015
ins2.getEpochSecond(): 1181038830
翻译自: https://www.includehelp.com/java/instant-getepochsecond-method-with-example.aspx
java 根据类名示例化类
