java 根據類名示例化類

即時類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()方法用于從1970-01-01T00：00：00Z的Java epoch標準格式中獲取秒數。

• 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()方法是一個非靜態方法，只能通過類對象訪問，如果嘗試使用類名稱訪問該方法，則會收到錯誤消息。

• getEpochSecond() method does not throw an exception at the time of returning seconds.

  getEpochSecond()方法在返回秒數時不會引發異常。

Syntax:

句法：

public long getEpochSecond();

Parameter(s):

參數：

• None

  沒有

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.

此方法的返回類型為long ，它從1970-01-01T00：00：00Z的紀元標準格式返回秒。

Example:

例：

// Java program to demonstrate the example // of getEpochSecond() method // of Instantimport java.time.*; import java.time.temporal.*;public class GetEpochSecondOfInstant {public static void main(String args[]) {// Instantiates two InstantInstant ins1 = Instant.parse("2006-04-03T05:10:15.00Z");Instant ins2 = Instant.parse("2007-06-05T10:20:30.00Z");// Display ins1,ins2System.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 2006-04-03T05:10:15.120Zlong epocsec_val = ins1.getEpochSecond();// Display epocsec_valSystem.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 2007-06-05T10:20:30.00Zepocsec_val = ins2.getEpochSecond();// Display epocsec_valSystem.out.println("ins2.getEpochSecond(): " + epocsec_val);} }

Output

輸出量

Instant ins1 and ins2: ins1: 2006-04-03T05:10:15Z ins2: 2007-06-05T10:20:30Zins1.getEpochSecond(): 1144041015 ins2.getEpochSecond(): 1181038830

翻譯自: https://www.includehelp.com/java/instant-getepochsecond-method-with-example.aspx

java 根據類名示例化類

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