Calendar 中常量说明

                 

  01.Calendar cal = Calendar.getInstance();  
		02.  
		03. //当前年   
		04. int year = cal.get(Calendar.YEAR);  
		05.   
		06. //当前月 Calendar.MONTH从0开始   
		07. int month = (cal.get(Calendar.MONTH))+1;  
		08.   
		09. //当前月的第几天：即当前日   
		10. int day_of_month = cal.get(Calendar.DAY_OF_MONTH);  
		11. //Calendar.DAY_OF_MONTH 和 Calendar.DATE 是等价的   
		12. int date = cal.get(Calendar.DATE);  
		13.   
		14. //当前时：HOUR_OF_DAY-24小时制   
		15. int hour24 = cal.get(Calendar.HOUR_OF_DAY);  
		16. //HOUR-12小时制   
		17. int hour12 = cal.get(Calendar.HOUR);  
		18.   
		19. //当前分   
		20. int minute = cal.get(Calendar.MINUTE);  
		21.   
		22. //当前秒   
		23. int second = cal.get(Calendar.SECOND);  
		24.   
		25. // 星期几 Calendar.DAY_OF_WEEK用数字（1~7）表示（星期日~星期六）   
		26. int day_of_week = cal.get(Calendar.DAY_OF_WEEK)-1;   
		27.   
		28. //0-上午；1-下午   
		29. int ampm = cal.get(Calendar.AM_PM);  
		30.   
		31. //当前年的第几周   
		32. int week_of_year = cal.get(Calendar.WEEK_OF_YEAR);  
		33.   
		34. //当前月的星期数   
		35. int week_of_month = cal.get(Calendar.WEEK_OF_MONTH);  
		36.   
		37. //当前月中的第几个星期   
		38. int day_of_week_in_month = cal.get(Calendar.DAY_OF_WEEK_IN_MONTH);  
		39.   
		40. //当前年的第几天   
		41. int day_of_year = cal.get(Calendar.DAY_OF_YEAR);