Java ChronoField isDateBased()用法及代码示例

ChronoField枚举的isDateBased()方法用于检查此ChronoField是否表示日期的组成部分。day-of-week到age的ChronoField常量是基于日期的。

用法:

public boolean isDateBased()

参数：此方法不接受任何内容。

返回值：如果它是日期的组成部分，则此方法返回true。

以下示例程序旨在说明ChronoField.isDateBased()方法：
程序1:

// Java program to demonstrate 
// ChronoField.isDateBased() method 
  
import java.time.temporal.ChronoField; 
  
public class GFG { 
    public static void main(String[] args) 
    { 
  
        // get chronoField 
        ChronoField chronoField 
            = ChronoField.valueOf("HOUR_OF_DAY"); 
  
        // apply isDateBased() 
        boolean isDateBasedAttribute 
            = chronoField.isDateBased(); 
  
        // print 
        System.out.println( 
            "HOUR_OF_DAY"
            + " is Date based attribute:"
            + isDateBasedAttribute); 
    } 
}

输出：

HOUR_OF_DAY is Date based attribute:false

程序2:

// Java program to demonstrate 
// ChronoField.isDateBased() method 
  
import java.time.temporal.ChronoField; 
  
public class GFG { 
    public static void main(String[] args) 
    { 
  
        // get chronoField 
        ChronoField chronoField 
            = ChronoField.valueOf("YEAR_OF_ERA"); 
  
        // apply isDateBased() 
        boolean isDateBasedAttribute 
            = chronoField.isDateBased(); 
  
        // print 
        System.out.println("YEAR_OF_ERA"
                           + " is Date based attribute:"
                           + isDateBasedAttribute); 
    } 
}

输出：

YEAR_OF_ERA is Date based attribute:true

参考：https：//docs.oracle.com/javase/10/docs/api/java/time/temporal/ChronoField.html#isDateBased()

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注：本文由纯净天空筛选整理自AmanSingh2210大神的英文原创作品 ChronoField isDateBased() method in Java with Examples。非经特殊声明，原始代码版权归原作者所有，本译文未经允许或授权，请勿转载或复制。