public PdfDate() 
{
        this(new GregorianCalendar());
}

Constructs a PdfDate-object, representing the current day and time.

 public PdfDate(Calendar d) 
{
    
    // constructors
        super();
        StringBuffer date = new StringBuffer("D:");
        date.append(setLength(d.get(Calendar.YEAR), 4));
        date.append(setLength(d.get(Calendar.MONTH) + 1, 2));
        date.append(setLength(d.get(Calendar.DATE), 2));
        date.append(setLength(d.get(Calendar.HOUR_OF_DAY), 2));
        date.append(setLength(d.get(Calendar.MINUTE), 2));
        date.append(setLength(d.get(Calendar.SECOND), 2));
        int timezone = (d.get(Calendar.ZONE_OFFSET) + d.get(Calendar.DST_OFFSET)) / (60 * 60 * 1000);
        if (timezone == 0) {
            date.append('Z");
        }
        else if (timezone <  0) {
            date.append('-");
            timezone = -timezone;
        }
        else {
            date.append('+");
        }
        if (timezone != 0) {
            date.append(setLength(timezone, 2)).append('\'");
            int zone = Math.abs((d.get(Calendar.ZONE_OFFSET) + d.get(Calendar.DST_OFFSET)) / (60 * 1000)) - (timezone * 60);
            date.append(setLength(zone, 2)).append('\'");
        }
        value = date.toString();
}

Constructs a PdfDate-object.

Parameters:

d - the date that has to be turned into a PdfDate-object

 public static Calendar decode(String s) 
{
        try {
            if (s.startsWith("D:"))
                s = s.substring(2);
            GregorianCalendar calendar;
            int slen = s.length();
            int idx = s.indexOf('Z");
            if (idx  >= 0) {
                slen = idx;
                calendar = new GregorianCalendar(new SimpleTimeZone(0, "ZPDF"));
            }
            else {
                int sign = 1;
                idx = s.indexOf('+");
                if (idx <  0) {
                    idx = s.indexOf('-");
                    if (idx  >= 0)
                        sign = -1;
                }
                if (idx <  0)
                    calendar = new GregorianCalendar();
                else {
                    int offset = Integer.parseInt(s.substring(idx + 1, idx + 3)) * 60;
                    if (idx + 5 <  s.length())
                        offset += Integer.parseInt(s.substring(idx + 4, idx + 6));
                    calendar = new GregorianCalendar(new SimpleTimeZone(offset * sign * 60000, "ZPDF"));
                    slen = idx;
                }
            }
            calendar.clear();
            idx = 0;
            for (int k = 0; k <  DATE_SPACE.length; k += 3) {
                if (idx  >= slen)
                    break;
                calendar.set(DATE_SPACE[k], Integer.parseInt(s.substring(idx, idx + DATE_SPACE[k + 1])) + DATE_SPACE[k + 2]);
                idx += DATE_SPACE[k + 1];
            }
            return calendar;
        }
        catch (Exception e) {
            return null;
        }
}

Converts a PDF string representing a date into a Calendar.

 public String getW3CDate() 
{
        return getW3CDate(value);
}

Gives the W3C format of the PdfDate.

 public static String getW3CDate(String d) 
{
        if (d.startsWith("D:"))
            d = d.substring(2);
        StringBuffer sb = new StringBuffer();
        if (d.length() <  4)
            return "0000";
        sb.append(d.substring(0, 4)); //year
        d = d.substring(4);
        if (d.length() <  2)
            return sb.toString();
        sb.append('-").append(d.substring(0, 2)); //month
        d = d.substring(2);
        if (d.length() <  2)
            return sb.toString();
        sb.append('-").append(d.substring(0, 2)); //day
        d = d.substring(2);
        if (d.length() <  2)
            return sb.toString();
        sb.append('T").append(d.substring(0, 2)); //hour
        d = d.substring(2);
        if (d.length() <  2) {
            sb.append(":00Z");
            return sb.toString();
        }
        sb.append(':").append(d.substring(0, 2)); //minute
        d = d.substring(2);
        if (d.length() <  2) {
            sb.append('Z");
            return sb.toString();
        }
        sb.append(':").append(d.substring(0, 2)); //second
        d = d.substring(2);
        if (d.startsWith("-") || d.startsWith("+")) {
            String sign = d.substring(0, 1);
            d = d.substring(1);
            String h = "00";
            String m = "00";
            if (d.length()  >= 2) {
                h = d.substring(0, 2);
                if (d.length()  > 2) {
                    d = d.substring(3);
                    if (d.length()  >= 2)
                        m = d.substring(0, 2);
                }
                sb.append(sign).append(h).append(':").append(m);
                return sb.toString();
            }
        }
        sb.append('Z");
        return sb.toString();
}

Gives the W3C format of the PdfDate.