ich arbeite an einem Gregorianischen Kalenderprojekt, wo ich 100 Tage von heute und Wochentag meines Geburtstages drucken muss. Das Programm zeigt einen Tag an, ist jedoch der falsche Tag. Könnt ihr mir bei dem Problem helfen? Vielen Dank! HierJava Gregorianische Kalenderausgabe falsches Datum
import java.util.GregorianCalendar;
public class Gregorian {
public static void main(String[] args)
{
Day today = new Day();
System.out.print("Today: ");
System.out.println(today.toString());
GregorianCalendar Date = new GregorianCalendar();
Date.add(GregorianCalendar.DAY_OF_MONTH, 100);
CalendarUtils utils = new CalendarUtils();
String day = utils.getWeekday(Date.get(GregorianCalendar.DAY_OF_WEEK));
int year=Date.get(GregorianCalendar.YEAR);
int month=Date.get(GregorianCalendar.MONTH);
int dayof=Date.get(GregorianCalendar.DAY_OF_MONTH);
System.out.println("100 days from today: " + year + "/" + month + "/" + dayof + " which is a: " + day);
GregorianCalendar Birthday = new GregorianCalendar(2012,1,1);
String Bday = utils.getWeekday(Birthday.get(GregorianCalendar.DAY_OF_WEEK));
System.out.println("Weekday of my Birthday: " + Bday);
Birthday.add(GregorianCalendar.DAY_OF_MONTH, 10000);
int Byear=Birthday.get(GregorianCalendar.YEAR);
int Bmonth=Birthday.get(GregorianCalendar.MONTH);
int Bdayof=Birthday.get(GregorianCalendar.DAY_OF_MONTH);
System.out.println("10000 days from my Birthday: " + Byear + "/" + Bmonth + "/" + Bdayof);
ist die CalendarUtils
import java.util.GregorianCalendar;
public class CalendarUtils
{
/**
Returns the String for GregorianCalendar DAY_OF_WEEK
*/
public String getWeekday(int day_of_week)
{
String day = "";
if (day_of_week == GregorianCalendar.SUNDAY)
{
day = "Sunday";
}
else if (day_of_week == GregorianCalendar.MONDAY)
{
day = "Monday";
}
else if (day_of_week == GregorianCalendar.TUESDAY)
{
day = "Tuesday";
}
else if (day_of_week == GregorianCalendar.WEDNESDAY)
{
day = "Wednesday";
}
else if (day_of_week == GregorianCalendar.THURSDAY)
{
day = "Thursday";
}
else if (day_of_week == GregorianCalendar.FRIDAY)
{
day = "Friday";
}
else if (day_of_week == GregorianCalendar.SATURDAY)
{
day = "Saturday";
}
return day;
}
/**
Returns the string of GregorianCalendar MONTH
*/
public String getMonth(int month)
{
String monthStr = "";
if (month == GregorianCalendar.JANUARY)
{
monthStr = "January";
}
else if (month == GregorianCalendar.FEBRUARY)
{
monthStr = "February";
}
else if (month == GregorianCalendar.MARCH)
{
monthStr = "March";
}
else if (month == GregorianCalendar.APRIL)
{
monthStr = "April";
}
else if (month == GregorianCalendar.MAY)
{
monthStr = "May";
}
else if (month == GregorianCalendar.JUNE)
{
monthStr = "June";
}
else if (month == GregorianCalendar.JULY)
{
monthStr = "July";
}
else if (month == GregorianCalendar.AUGUST)
{
monthStr = "August";
}
else if (month == GregorianCalendar.SEPTEMBER)
{
monthStr = "September";
}
else if (month == GregorianCalendar.OCTOBER)
{
monthStr = "October";
}
else if (month == GregorianCalendar.NOVEMBER)
{
monthStr = "November";
}
else if (month == GregorianCalendar.DECEMBER)
{
monthStr = "December";
}
return monthStr;
}
}
Es könnte sein, weil Sie den 'GregorianCalendar' mit 2012 als Jahr initialisieren. Was gibt es aus und was erwarten Sie? –
Das ist das Datum, das ich einlege, um den Wochentag zu bekommen und ich erwarte Sonntag, aber ich bekomme Mittwoch statt – Tim
Kannst du deine 'utils # getWeekday' Methode posten? Es ist höchstwahrscheinlich falsch. –