Java GregorianCalendar.roll(int field, boolean up)
Syntax
GregorianCalendar.roll(int field, boolean up) has the following syntax.
public void roll(int field, boolean up)
Example
In the following code shows how to use GregorianCalendar.roll(int field, boolean up) method.
/* ww w .j a v a 2s . c o m*/
import java.util.*;
public class Main {
public static void main(String[] args) {
GregorianCalendar cal =
(GregorianCalendar) GregorianCalendar.getInstance();
// print the current date and time
System.out.println(cal.getTime());
// roll a month
cal.roll(GregorianCalendar.MONTH, true);
System.out.println("Date:" + cal.getTime());
// roll a year backwards
cal.roll(GregorianCalendar.YEAR, false);
System.out.println("Date:" + cal.getTime());
}
}
The code above generates the following result.
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