java中get接口示例

即時類的get()方法 (Instant Class get() method)

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

  get()方法在java.time包中可用。

• get() method is used to get the value of the given field from this Instant object.

  get()方法用于從此Instant對象獲取給定字段的值。

• get() 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.

  get()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。

• get() method may throw an exception at the time of returning value for the given field.

  在返回給定字段的值時， get()方法可能會引發異常。

  • DateTimeException: This exception may throw when the given field couldn’t be generated.DateTimeException ：當無法生成給定字段時，可能引發此異常。
  • UnsupportedTemporalTypeException: This exception may throw when the given field is unsupported.UnsupportedTemporalTypeException ：當不支持給定字段時，可能引發此異常。
  • ArithmeticException: This exception may throw when the calculated result exceeds the limit.ArithmeticException ：當計算結果超出限制時，可能引發此異常。

Syntax:

句法：

public int get(TemporalField t_field);

Parameter(s):

參數：

• TemporalField t_field – represents the temporal field of the returned value.

  TemporalField t_field –表示返回值的時間字段。

Return value:

返回值：

The return type of this method is int, it returns the value for the given temporal field from this Instant.

此方法的返回類型為int ，它從此Instant返回給定時間字段的值。

Example:

例：

// Java program to demonstrate the example // of get(TemporalField t_field) method // of Instantimport java.time.*; import java.time.temporal.*;public class GetOfInstant {public static void main(String args[]) {// Instantiates two InstantInstant ins1 = Instant.parse("2006-04-03T05:10:15.120Z");Instant ins2 = Instant.parse("2007-06-05T10:20:30.20Z");// 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 // given field from this Instant i.e.// here the MICRO_OF_SECOND field value// will be returned from this Instant ins1int get_val = ins1.get(ChronoField.MICRO_OF_SECOND);// Display get_valSystem.out.println("ins1.get(ChronoField.MICRO_OF_SECOND): " + get_val);// Here, this method gets the value of the // given field from this Instant i.e.// here the MILLI_OF_SECOND field value// will be returned from this Instant ins2get_val = ins2.get(ChronoField.MILLI_OF_SECOND);// Display get_valSystem.out.println("ins2.get(ChronoField.MILLI_OF_SECOND): " + get_val);} }

Output

輸出量

Instant ins1 and ins2: ins1: 2006-04-03T05:10:15.120Z ins2: 2007-06-05T10:20:30.200Zins1.get(ChronoField.MICRO_OF_SECOND): 120000 ins2.get(ChronoField.MILLI_OF_SECOND): 200

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

java中get接口示例

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