Question

while (r.next()) {
    String rn = r.getString(3);
    String sqldate = r.getString(2); // database reservation date
}

Getting date from database

DateFormat RD = new SimpleDateFormat("yyyy-MM-dd");
     java.sql.Date converteddate = new java.sql.Date(RD.parse(sqldate).getTime());
     Calendar cal = Calendar.getInstance();
     Calendar cal1 = Calendar.getInstance();
     cal.setTime(converteddate);
     cal.add(Calendar.DATE, 7);
     if(cal<=cal1){ }// i need to this opration i dont know how

I need to check cal is <= Cal1. Any ideas?

Answer 1

How about using the simple method:

if (cal.before(cal1)) { ... }

This reads: “If a date is before another date, you should do the following..”.

I think it makes it easier to read if you write “before” than “compareTo”, even though the operation is the same. Also read the documentation for Java Calendar.

EDIT:
I’ve updated the answer a bit to include what’s been commented below so the answer is more complete. Thanks to assylias for pointing it out, but if you want to compare if a date is before or equal to another date, you should use:

if (!cal.after(cal1)) { ... }

This reads: “If a date is not after another date, you should do the following..”. Also note that “not after” is the same as “before or equal to”.