GregorianCalendar.setGregorianChange doesn't adjust dates after setting the cutover date. The following test program fails.

import java.util.*;

public class CutoverTest {
    public static void main(String[] args) {
        GregorianCalendar cal = new GregorianCalendar();
        Date x = new Date(2003-1900, 10-1, 1);
        cal.setTime(x);
        int[] orig = getDate(cal);

        // Change the cutover date to yesterday, which shouldn't affect the date.
        cal.setGregorianChange(new Date(x.getTime() - (24*3600*1000)));
        int[] d1 = getDate(cal);
        if (!compareDates(d1, orig)) {
            throw new RuntimeException("Shouldn't change date: got " + toString(d1)
                                       + ", expected " + toString(orig));
        }
        // Change the cutover date to tomorrow, which should change the date.
        cal.setGregorianChange(new Date(x.getTime() + (24*3600*1000)));
        d1 = getDate(cal);
        int[] expected = new int[] { 2003, 9, 18};
        if (!compareDates(d1, expected)) {
            throw new RuntimeException("should change date: got " + toString(d1)
                                       + ", expected " + toString(expected));
        }
    }

    static int[] getDate(Calendar cal) {
        int[] date = new int[3];
        date[0] = cal.get(cal.YEAR);
        date[1] = cal.get(cal.MONTH) + 1;
        date[2] = cal.get(cal.DAY_OF_MONTH);
        return date;
    }

    static boolean compareDates(int[] d1, int[] d2) {
        for (int i = 0; i < d1.length; i++) {
            if (d1[i] != d2[i]) {
                return false;
            }
        }
        return true;
    }

    static String toString(int[] date) {
        return date[0] + "/" + date[1] + "/" + date[2];
    }
}

###@###.### 2003-09-26