Comparing two Calendar objects?

Question

I want to compare two Calendar objects to see if they both contain the same date. I don't care about any value below days.I've implemented this and I can't think about any case where it should fail: private static boolean areEqualDays(Calendar c1, Calendar c2) {  SimpleDateFormat sdf = new SimpleDateFormat("dd-MM-yyyy");  return (sdf.format(c1.getTime()).equals(sdf.format(c2.getTime()))); }Is this approach correct or should I compare c1 and c2 field by field?

Answer 1

does it work? have you tested it?

you have declared it in your format string dd-MM-yyyy as the day, then month, then year.

You can parse this string and then compare the integers:

dateBuff = std.format(c1.getTime());

String [] tokens = parse(dateBuff,"-"); /* tokens[0] contains the day, tokens[1] contains the month, tokens[2] contains the year */

int day1 = Integer.parseInt(tokens[0]);

int month1 = Integer.parseInt(tokens[1]);

int year1 = Integer.parseInt(tokens[2]);

// processes the second date in the same way, then compare

I would suggest declaring this method inside of an interface CompareDate.

First create an interface Sortable containing a method called Compare( Object, Object);

Then class CompareDate implements Sortable, which typecasts the Object to date and compares