Java Utililty Methods Date Format Change

List of utility methods to do Date Format Change

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Description

The list of methods to do Date Format Change are organized into topic(s).

Method

StringconvertIso8601FormatToArsTimeOfDay(String timeOfDayString)
Converts a string in ISO8601 Format into the string corresponding to an Ars internal time of day representation 
int hours, minutes, seconds;
int total = 0;
try {
    hours = Integer.parseInt(timeOfDayString.substring(0, 2));
} catch (NumberFormatException e) {
    throw new ParseException("Unparseable dime: " + timeOfDayString, 0);
try {
...
CalendarconvertISO8610ToCalendar(String iso8601string)
Convert an ISO8601 UTC string to a Calendar object. 
Calendar calendar = GregorianCalendar.getInstance();
String s = iso8601string.replace("Z", "+00:00");
try {
    s = s.substring(0, 22) + s.substring(23); 
    SimpleDateFormat formatter = new SimpleDateFormat("yyyy-MM-dd'T'HH:mm:ssZ");
    formatter.setTimeZone(TimeZone.getTimeZone("UTC"));
    Date date = formatter.parse(s);
    calendar.setTime(date);
...
longconvertTimeStringToTimestamp(String timeString, String timeFormat)
convert Time String To Timestamp 
SimpleDateFormat sdf = new SimpleDateFormat(timeFormat);
return sdf.parse(timeString).getTime();