package?ultilies;

import?java.util.Calendar;
import?java.util.Date;
import?java.util.HashMap;
import?java.util.Locale;
import?java.util.Map;

public?class?DateComputationUtility?{
	
	
	
	
	public?static?DateComputationUtility?getInstance（）{
		if（utility?==?null）{
			return?new?DateComputationUtility（）;
		}
		return?utility;
	}
	
	
	
	private?DateComputationUtility（）{
		
	}
	
	public?int?getGapWeeksFromDate（Date?startDateDate?endDate）{
		int?gapDays?=?getGapDaysFromDate（startDateendDate）;
		int?gapWeeks?=?gapDays/WEEKMETRIC;
		int?leftDays?=?gapDays%WEEKMETRIC;
		
		Calendar?calendar?=?Calendar.getInstance（）;
		calendar.setTime（startDate）;
		int?currentWeek?=?calendar.get（Calendar.WEEK_OF_MONTH）;
		calendar.add（Calendar.DAY_OF_WEEK?leftDays）;
		int?nextWeek?=?calendar.get（Calendar.WEEK_OF_MONTH）;
		
		return?gapWeeks?+?nextWeek?-?currentWeek?+?1;
		
	}
	
	private?int?getGapDaysFromDate（Date?startDateDate?endDate）{
		long?startMills?=?startDate.getTime（）;
		long?currMills?=?endDate.getTime（）;
		
		return?（int）（（currMills?-?startMills）?/MILLMETRIC/HOURMETRIC/HOURMETRIC/DAYMETRIC）;
	}
	
	public?int?getCurrentLesson（）{
		Calendar?calendar?=?Calendar.getInstance（）;
		calendar.add（Calendar.MINUTE?5）;
		
		int?hour?=?calendar.get（Calendar.HOUR_OF_DAY）;
		if（hour?-?EVERNINGHOUR?>?0）{
			return?hour-EVERNINGHOUR?+?lessonNumberMap.get（EVERNINGHOUR）;
		}
		if（hour?-?AFTERNOONHOUR?>?0）{
			return?hour?-?AFTERNOONHOUR?+?lessonNumberMap.get（AFTERNOONHOUR）;
		}
		if（hour?-?MORNINGHOUR?>?0）{
			return?hour?-?MORNINGHOUR?+?lessonNumberMap.get（MORNINGHOUR）;
		}
		return?-1;
	}
	
	public?String?getCurrentWeekDay（）{
		Calendar?calendar?=?Calendar.getInstance（Locale.CHINA）;
		calendar.setFirstDayOfWeek（Calendar.SUNDAY）;
		
		
		return?calendar.getDisplayName（Calendar.DAY_OF_WEEK?Calendar.LONG?Locale.CHINA）;
	}
	
	public?static?DateComputationUtility?utility;
	
	private?static?final?int?MILLMETRIC?=?1000;
	private?static?final?int?HOURMETRIC?=?60;
	private?static?final?int?DAYMETRIC?=?24;
	private?static?final?int?WEEKMETRIC?=?7;
	
	public?static?final?int?MORNINGHOUR?=?8;
	public?static?final?int?AFTERNOONHOUR?=?14;
	public?static?final?int?EVERNINGHOUR?=?19;
	
	private?static?final?Map?lessonNumberMap?=?new?HashMap（）;
	static?{
		lessonNumberMap.put（MORNINGHOUR?1）;
		lessonNumberMap.put（AFTERNOONHOUR?5）;
		lessonNumberMap.put（EVERNINGHOUR?9）;
	}
}

?屬性????????????大小?????日期????時(shí)間???名稱
-----------?---------??----------?-----??----

?????文件????????301??2016-12-19?19:14??StudentDemo\.classpath

?????文件????????387??2016-12-19?19:14??StudentDemo\.project

?????文件????????629??2016-12-19?19:14??StudentDemo\.settings\org.eclipse.jdt.core.prefs

?????文件???????2773??2016-12-22?18:58??StudentDemo\bin\ultilies\DateComputationUtility.class

?????文件???????1503??2016-12-22?18:58??StudentDemo\bin\ultilies\LabelStringConstructor.class

?????文件????????969??2016-12-22?18:58??StudentDemo\bin\ultilies\LoadStudentNames.class

?????文件???????1611??2016-12-22?18:58??StudentDemo\bin\ultilies\LoadStudentNamesService.class

?????文件???????1074??2016-12-22?18:58??StudentDemo\bin\ultilies\UpdateStringTask.class

?????文件???????1677??2016-12-22?18:58??StudentDemo\bin\views\AbsentData.class

?????文件???????1500??2016-12-22?18:58??StudentDemo\bin\views\Studentframe$1.class

?????文件???????1370??2016-12-22?18:58??StudentDemo\bin\views\Studentframe$2.class

?????文件????????724??2016-12-22?18:58??StudentDemo\bin\views\Studentframe$3.class

?????文件????????570??2016-12-22?18:58??StudentDemo\bin\views\Studentframe$4.class

?????文件???????1359??2016-12-22?18:58??StudentDemo\bin\views\Studentframe$AskStudentName.class

?????文件???????1571??2016-12-22?18:58??StudentDemo\bin\views\Studentframe$LoadStudentNames.class

?????文件???????1213??2016-12-22?18:58??StudentDemo\bin\views\Studentframe$ShowAbsentInfo.class

?????文件???????7122??2016-12-22?18:58??StudentDemo\bin\views\Studentframe.class

?????文件???????2507??2016-12-19?19:14??StudentDemo\src\ultilies\DateComputationUtility.java

?????文件????????850??2016-12-19?19:14??StudentDemo\src\ultilies\LabelStringConstructor.java

?????文件????????761??2016-12-19?19:14??StudentDemo\src\ultilies\LoadStudentNames.java

?????文件????????952??2016-12-21?18:34??StudentDemo\src\ultilies\LoadStudentNamesService.java

?????文件????????603??2016-12-19?19:14??StudentDemo\src\ultilies\UpdateStringTask.java

?????文件????????673??2016-12-21?23:26??StudentDemo\src\views\AbsentData.java

?????文件???????7269??2016-12-21?23:27??StudentDemo\src\views\Studentframe.java

?????文件?????????21??2016-12-19?19:14??StudentDemo\stuName.txt

?????目錄??????????0??2018-04-04?20:22??StudentDemo\bin\ultilies

?????目錄??????????0??2018-04-04?20:22??StudentDemo\bin\views

?????目錄??????????0??2018-04-04?20:22??StudentDemo\src\ultilies

?????目錄??????????0??2018-04-04?20:22??StudentDemo\src\views

?????目錄??????????0??2018-04-04?20:22??StudentDemo\.settings

............此處省略6個(gè)文件信息