Java IsoChronology eras()用法及代码示例

java.time.chrono.IsoChronology类的eras()方法用于检索此特定Iso年表下的所有时代。

用法:

public List eras()

参数：此方法不接受任何参数作为参数。

返回值：这种方法返回了这个特定的Iso年表所处的所有时代。

下面是说明eras()方法的示例：

范例1：

// Java program to demonstrate 
// eras() method 
  
import java.util.*; 
import java.io.*; 
import java.time.*; 
import java.time.chrono.*; 
  
public class GFG { 
    public static void main(String[] argv) 
    { 
        try { 
            // creating and initializing 
            // LocalDate Object 
            LocalDate hidate = LocalDate.now(); 
  
            // getting IsoChronology 
            // used in LocalDate 
            IsoChronology crono 
                = hidate.getChronology(); 
  
            // getting all IsoEras present 
            // by using eraOf() method 
            List<Era> list = crono.eras(); 
  
            // display the result 
            System.out.println("IsoEra is:"
                               + (list.iterator()).next()); 
        } 
        catch (DateTimeException e) { 
            System.out.println("IsoEra is invalid"); 
            System.out.println("Exception thrown:" + e); 
        } 
    } 
}

输出：

IsoEra is:BCE

范例2：

// Java program to demonstrate 
// eras() method 
  
import java.util.*; 
import java.io.*; 
import java.time.*; 
import java.time.chrono.*; 
  
public class GFG { 
    public static void main(String[] argv) 
    { 
        try { 
            // creating and initializing 
            // LocalDate Object 
            LocalDate hidate = LocalDate.now(); 
  
            // getting IsoChronology 
            // used in LocalDate 
            IsoChronology crono 
                = hidate.getChronology(); 
  
            // getting all IsoEras present 
            // by using eraOf() method 
            List<Era> list = crono.eras(); 
  
            // getting list Iterator 
            Iterator iter = list.iterator(); 
  
            // display the result 
            System.out.println("List of IsoEra:"
                               + "\n"
                               + iter.next() + "\n"
                               + iter.next()); 
        } 
        catch (DateTimeException e) { 
            System.out.println("IsoEra is invalid"); 
            System.out.println("Exception thrown:" + e); 
        } 
    } 
}

输出：

List of IsoEra:
BCE
CE

参考： https://docs.oracle.com/javase/9/docs/api/java/time/chrono/IsoChronology.html#eras-

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注：本文由纯净天空筛选整理自RohitPrasad3大神的英文原创作品 IsoChronology eras() method in Java with Example。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。