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Java OffsetDateTime minusWeeks()用法及代码示例


Java中OffsetDateTime类的minusWeeks()方法返回此OffsetDateTime的副本,其中包含从解析的日期和时间中减去指定的周数。

用法:

public OffsetDateTime minusWeeks(long weeks)

参数:此方法接受单个参数week,该参数指定要从解析日期中减去的星期。也可以是负数,在这种情况下,它会增加周数。


返回值:它基于此日期时间返回OffsetDateTime,其中减去了周,并且不为null。

异常:程序超出支持的数据和时间范围时,将引发DateTimeException。

以下示例程序旨在说明minusWeeks()方法:

示例1:

// Java program to demonstrate the minusWeeks() method 
  
import java.time.OffsetDateTime; 
import java.time.ZonedDateTime; 
  
public class GFG { 
    public static void main(String[] args) 
    { 
  
        // Parses the date1 
        OffsetDateTime date1 
            = OffsetDateTime 
                  .parse("2018-12-12T13:30:30+05:00"); 
  
        // Prints dates 
        System.out.println("Date1: " + date1); 
  
        // Subtracts the number of weeks 
        System.out.println("Date1 after subtracting weeks: "
                           + date1.minusWeeks(-120)); 
    } 
}
输出:
Date1: 2018-12-12T13:30:30+05:00
Date1 after subtracting weeks: 2021-03-31T13:30:30+05:00

示例2:

// Java program to demonstrate the minusWeeks() method 
  
import java.time.OffsetDateTime; 
import java.time.ZonedDateTime; 
  
public class GFG { 
    public static void main(String[] args) 
    { 
  
        // Parses the date1 
        OffsetDateTime date1 
            = OffsetDateTime 
                  .parse("2018-12-12T13:30:30+05:00"); 
  
        // Prints dates 
        System.out.println("Date1: " + date1); 
  
        // Subtracts the number of weeks 
        System.out.println("Date1 after subtracting weeks: "
                           + date1.minusWeeks(140)); 
    } 
}
输出:
Date1: 2018-12-12T13:30:30+05:00
Date1 after subtracting weeks: 2016-04-06T13:30:30+05:00

参考: https://docs.oracle.com/javase/10/docs/api/java/time/OffsetDateTime.html#minusWeeks(long)



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