📜  Java中的即时 getEpochSecond() 方法和示例

📅  最后修改于: 2022-05-13 01:54:26.660000             🧑  作者: Mango

Java中的即时 getEpochSecond() 方法和示例

Instant 类的getEpochSecond()方法用于返回Java纪元 1970-01-01T00:00:00Z 的秒数。表示此实例的时间与“1970-01-01T00:00:00Z”表示的时间之间的时间差,由该方法返回。纪元秒计数是秒的简单递增计数,其中第二个 0 是 1970-01-01T00:00:00Z。

句法:

public long getEpochSecond()

返回:此方法返回从 1970-01-01T00:00:00Z 开始的秒数

下面的程序说明了 Instant.getEpochSecond() 方法:

方案一:

// Java program to demonstrate
// Instant.getEpochSecond() method
  
import java.time.*;
  
public class GFG {
    public static void main(String[] args)
    {
  
        // create  instance object
        Instant instant
            = Instant.parse("2018-10-20T16:55:30.00Z");
  
        // print Instant Value
        System.out.println("Instant: " + instant);
  
        // get epochValue using getEpochSecond
        long epochValue = instant.getEpochSecond();
  
        // print results
        System.out.println("Java epoch Value: "
                           + epochValue);
    }
}
输出:
Instant: 2018-10-20T16:55:30Z
Java epoch Value: 1540054530

方案二:

// Java program to demonstrate
// Instant.getEpochSecond() method
  
import java.time.*;
  
public class GFG {
    public static void main(String[] args)
    {
  
        // create current instance object
        Instant instant
            = Instant.now();
  
        // print Instant Value
        System.out.println("Current Instant: "
                           + instant);
  
        // get epochValue using getEpochSecond
        long epochValue = instant.getEpochSecond();
  
        // print results
        System.out.println("Java epoch Value: "
                           + epochValue);
    }
}
输出:
Current Instant: 2018-11-22T08:26:19.502Z
Java epoch Value: 1542875179

参考:https: Java/time/Instant.html#getEpochSecond()