KS > practice > date

package part1.greet;
 
import java.text.DateFormat;
import java.text.SimpleDateFormat;
import java.util.Calendar;
import java.util.Date;
import java.util.GregorianCalendar;
 
public class date {
 
	public static void main(String[] args) throws IsSleepingException {
		Date now = new Date();
		DateFormat year = new SimpleDateFormat("yyyy");
		DateFormat month = new SimpleDateFormat("MM");
		DateFormat day = new SimpleDateFormat("dd");
		int yy = Integer.parseInt(year.format(now));
		int mm = Integer.parseInt(month.format(now)) - 1;
		int dd = Integer.parseInt(day.format(now));
 
		//おはようございます
		Calendar c1 = new GregorianCalendar(yy,mm,dd,05,29,59);
		Calendar c2 = new GregorianCalendar(yy,mm,dd,11,00,00);
		//こんにちは
		Calendar c3 = new GregorianCalendar(yy,mm,dd,10,59,59);
		Calendar c4 = new GregorianCalendar(yy,mm,dd,17,00,00);
		//こんばんは
		Calendar c5 = new GregorianCalendar(yy,mm,dd,16,59,59);
		Calendar c6 = new GregorianCalendar(yy,mm,dd,21,30,00);
		//おやすみなさい
		Calendar c7 = new GregorianCalendar(yy,mm,dd,21,29,59);
		Calendar c8 = new GregorianCalendar(yy,mm,dd+1,00,00,00);
		Calendar c9 = new GregorianCalendar(yy,mm,dd-1,23,59,59);
		Calendar c10 = new GregorianCalendar(yy,mm,dd,01,30,00);
		//就寝中です！
//		Calendar c11 = new GregorianCalendar(yy,mm,dd,01,29,59);
//		Calendar c12 = new GregorianCalendar(yy,mm,dd,05,30,00);
 
		Calendar c = new GregorianCalendar(yy,mm,dd,01,30,00);
		Date now1 = c.getTime();
 
		if(now1.after(c1.getTime()) && now1.before(c2.getTime())) {
			System.out.println("おはようございます");
		} else if(now1.after(c3.getTime()) && now1.before(c4.getTime())) {
			System.out.println("こんにちは");
		} else if(now1.after(c5.getTime()) && now1.before(c6.getTime())) {
			System.out.println("こんばんは");
		} else if(now1.after(c7.getTime()) && now1.before(c8.getTime()) || now1.after(c9.getTime()) && now1.before(c10.getTime()) ) {
			System.out.println("おやすみなさい");
		} else {
			System.out.println("就寝中です！");
			throw new IsSleepingException();
	}
 
	}
}