I am trying to include this piece of code in my Java Class. But the compiler tells me that it can't find Class Calendar. I can't create a class within a class though, can I? Any advice on how I can link this in to the rest of my code? Any advice gratefully received. I feel like I'm banging my head on a brick wall with this at the moment.
{
int tempDifference = 0;
int difference = 0;
Calendar earlier = Calendar.getInstance();
Calendar later = Calendar.getInstance();
if (y1.compareTo(y2) < 0)
{
earlier.setTime(y1);
later.setTime(y2);
}
else
{
earlier.setTime(y2);
later.setTime(y1);
}
while (earlier.get(Calendar.YEAR) != later.get(Calendar.YEAR))
{
tempDifference = 365 * (later.get(Calendar.YEAR) - earlier.get(Calendar.YEAR));
difference += tempDifference;
earlier.add(Calendar.DAY_OF_YEAR, tempDifference);
}
if (earlier.get(Calendar.DAY_OF_YEAR) != later.get(Calendar.DAY_OF_YEAR))
{
tempDifference = later.get(Calendar.DAY_OF_YEAR) - earlier.get(Calendar.DAY_OF_YEAR);
difference += tempDifference;
}
return difference;Full code here:
public class EmmaDate
{
private final int MAXYEAR=2099;
private final int MINYEAR=0;
private String nameOfDay[]=
{
"Sunday","Monday","Tuesday","Wednesday","Thursday","Friday","Saturday" //data
};
private String shortNameOfDay[]=
{
"Sun","Mon","Tue","Wed","Thu","Fri","Sat"
};
private String nameOfMonth[]=
{
"January","February","March","April","May","June",
"July","August","September","October","November","December"
};
private String shortNameOfMonth[]=
{
"Jan","Feb","Mar","Apr","May","Jun","Jul","Aug","Sep","Oct","Nov","Dec"
};
private int daysInMonth[]={31,28,31,30,31,30,31,31,30,31,30,31};
private String ordinal[]=
{
"st","nd","rd","th","th","th","th","th","th","th",
"th","th","th","th","th","th","th","th","th","th",
"st","nd","rd","th","th","th","th","th","th","th",
"st"
};
private int cumDays[]= { 0, 31, 59, 90, 120, 151
,181, 212, 243, 273, 304, 334}; //cumulative days
/**
* Constuctor taking 3 parameters, d (day), m (month) and y (year in format yyyy)
*/
private int year,month,day;
private int year2,month2,day2;
EmmaDate(int d,int m,int y)
{
if(this.valYear(y))
{
year=y;
}
else
{
year=new java.util.Date().getYear()+1900;
}
if(this.valMonth(m))
{
month=m;
}
else
{
month=new java.util.Date().getMonth()+1;
}
if(this.valDay(d,this.getMonth(),this.getYear()))
{
day=d;
}
else
{
day=new java.util.Date().getDay();
}
}
/**
*
*/
EmmaDate (int d,int m)
//overloading i.e. assumes that if the year is not given we mean this year
{
this(d,m,new java.util.Date().getYear()+1900);
}
EmmaDate(int d)
{
this(d,new java.util.Date().getMonth()+1,
new java.util.Date().getYear()+1900);
}
EmmaDate()
{
this(new java.util.Date().getDay(),
new java.util.Date().getMonth()+1,
new java.util.Date().getYear()+1900);
}
EmmaDate (EmmaDate ed)
{
this(ed.day,ed.month,ed.year);
}
private void setYear(int y)
{
int y2=this.getYear();
if(this.valYear(y))
{
year=y;
}
else
{
year=y2;
}
}
public void setMonth(int m )
{
int m2=this.getMonth();
if(this.valMonth(m))
{
month=m;
}
else
{
month=m2;
}
}
public void setDay(int d)
{
int d2=this.getDay();
if(this.valDay(d))
{
day=d;
}
else
{
day=d2;
}
}
public int getDay()
{
return day;
}
public int getMonth()
{
return month;
}
public int getYear()
{
return year;
}
public String toString()
{
String s;
if(day<10)
{
s="0"+day;
}
else
{
s=""+day;
}
if(month<10)
{
s=s+" "+"0"+month;
}
else
{
s=s+" "+month;
}
if (year<10)
{
s=s+"0"+" "+year;
}
else
{
s=s+" "+year;
}
return s;
}
public boolean valDay(int d)
{
if(d>=1&&d<31)
return true;
else
return false;
}
public boolean valDay (int d, int m, int y)
{
if(!valMonth(m))
return false;
int dim=daysInMonth[m-1];
if (leapYear(y)&&m==2)
dim=29;
if (d>=1&&d<=dim)
return true;
else
return false;
}
public boolean valMonth(int m)
{
if(m>=1&&m<12)
return true;
else
return false;
}
public boolean leapYear(int y)
{
if(y%400==0)
return true;
else
if(y%100==0)
return false;
else
if(y%4==0)
return true;
else
return false;
}
public boolean valYear(int y)
{
if (y>9999)
return false;
else
return true;
}
public boolean leapYear()
{
return this.leapYear(this.getYear());
}
//public int daysDiff (int d1, int m1, int y1, int d2, int m2, int y2)
{
int tempDifference = 0;
int difference = 0;
Calendar earlier = Calendar.getInstance();
Calendar later = Calendar.getInstance();
if (y1.compareTo(y2) < 0)
{
earlier.setTime(y1);
later.setTime(y2);
}
else
{
earlier.setTime(y2);
later.setTime(y1);
}
while (earlier.get(Calendar.YEAR) != later.get(Calendar.YEAR))
{
tempDifference = 365 * (later.get(Calendar.YEAR) - earlier.get(Calendar.YEAR));
difference += tempDifference;
earlier.add(Calendar.DAY_OF_YEAR, tempDifference);
}
if (earlier.get(Calendar.DAY_OF_YEAR) != later.get(Calendar.DAY_OF_YEAR))
{
tempDifference = later.get(Calendar.DAY_OF_YEAR) - earlier.get(Calendar.DAY_OF_YEAR);
difference += tempDifference;
}
return difference;
//public String dayName (int day, int month, int year)
}
}
