Java中的一週中的日期

Question

PHP有一個內置函數，它接收數據並返回星期幾（星期一，星期二等）。 Java有類似的功能嗎？

Answer 1

import java.util.*; 

public class GetDay { 
    public static void main(String[] args) { 
     Calendar calendar = new GregorianCalendar(); 
     calendar.set(2011, 1, 9); // 1 = Feb months are zero based remember 
     System.out.println(calendar.get(Calendar.DAY_OF_WEEK)); 
    } 
} 

Answer 2

是Calendar.DAY_OF_WEEK

Calendar c=Calendar.getInstance(); 
switch (c.get(Calendar.DAY_OF_WEEK)) 
{ 
    case Calendar.MONDAY: ...; 
    case Calendar.TUESDAY: ...; 
} 

Answer 3

java.util.Calendar.getInstance().get(Calendar.DAY_OF_WEEK); 

Answer 4

您可以使用日曆類：

例子：

Calendar newCal = new GregorianCalendar(); 
newCal.set(1997, 2, 1, 0, 0, 0); 
newCal.setTime(newCal.getTime());  
int day = newCal.get(Calendar.DAY_OF_WEEK); 

參考：

http://www.java-tips.org/java-se-tips/java.util/determine-the-day-of-the-week.html