java中get接口示例

LocalDateTime類的get()方法 (LocalDateTime 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 for the given field from this date-time object.

  get()方法用于從此日期時間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.
  • UnsupportedTemporalTypeException – This exception may throw when the given field is unsupported.
  • ArithmeticException – This exception may throw when the calculated result exceeds the limit.

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 date-time.

此方法的返回類型為int ，它從該日期時間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 LocalDateTimeimport java.time.*; import java.time.temporal.*;public class GetOfLocalDateTime {public static void main(String args[]) {// Instantiates two LocalDateTimeLocalDateTime da_ti1 = LocalDateTime.parse("2005-10-05T10:10:10");LocalDateTime da_ti2 = LocalDateTime.now();// Display da_ti1, da_ti2System.out.println("LocalDateTime da_ti1 and da_ti2: ");System.out.println("da_ti1: " + da_ti1);System.out.println("da_ti2: " + da_ti2);System.out.println();// Here, this method gets the value// for the given field from this date-time// i.e. we are getting the field value// MONTH_OF_YEAR from this da_ti1int get_val = da_ti1.get(ChronoField.MONTH_OF_YEAR);// Display get_valSystem.out.println("da_ti1.get(ChronoField.MONTH_OF_YEAR): " + get_val);// Here, this method gets the value for the// given field from this date-time// i.e. we are getting the field value// MICRO_OF_SECOND from this da_ti2get_val = da_ti2.get(ChronoField.MICRO_OF_SECOND);// Display get_valSystem.out.println("da_ti2.get(ChronoField.MICRO_OF_SECOND): " + get_val);} }

Output

輸出量

LocalDateTime da_ti1 and da_ti2: da_ti1: 2005-10-05T10:10:10 da_ti2: 2020-06-05T02:20:56.040348da_ti1.get(ChronoField.MONTH_OF_YEAR): 10 da_ti2.get(ChronoField.MICRO_OF_SECOND): 40348

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

java中get接口示例

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