Java Joda时间 - 实现日期范围迭代器

Question

我试图用Joda时间实现没有成功的日期迭代器。
我需要的东西，允许我迭代所有的日子形式startDate结束日期
你有什么想法如何做到这一点？

Answer 1

这里有一些让你开始。您可能要想想你是否希望它是包容性或独占末等

import org.joda.time.*; 
import java.util.*; 

class LocalDateRange implements Iterable<LocalDate> 
{ 
    private final LocalDate start; 
    private final LocalDate end; 

    public LocalDateRange(LocalDate start, 
          LocalDate end) 
    { 
     this.start = start; 
     this.end = end; 
    } 

    public Iterator<LocalDate> iterator() 
    { 
     return new LocalDateRangeIterator(start, end); 
    } 

    private static class LocalDateRangeIterator implements Iterator<LocalDate> 
    { 
     private LocalDate current; 
     private final LocalDate end; 

     private LocalDateRangeIterator(LocalDate start, 
             LocalDate end) 
     { 
      this.current = start; 
      this.end = end; 
     } 

     public boolean hasNext() 
     { 
      return current != null; 
     } 

     public LocalDate next() 
     { 
      if (current == null) 
      { 
       throw new NoSuchElementException(); 
      } 
      LocalDate ret = current; 
      current = current.plusDays(1); 
      if (current.compareTo(end) > 0) 
      { 
       current = null; 
      } 
      return ret; 
     } 

     public void remove() 
     { 
      throw new UnsupportedOperationException(); 
     } 
    } 
} 

class Test 
{ 
    public static void main(String args[]) 
    { 
     LocalDate start = new LocalDate(2009, 7, 20); 
     LocalDate end = new LocalDate(2009, 8, 3); 
     for (LocalDate date : new LocalDateRange(start, end)) 
     { 
      System.out.println(date); 
     } 
    } 
} 

这是一段时间，因为我用Java编写的迭代器，所以我希望它是正确的。我认为这是非常好的......

哦对C＃迭代器块，这就是我能说...

Answer 2

http://code.google.com/p/google-rfc-2445？