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took me a while to figure this one out, you’d think getting a standarized date/time would be a bit simpler…

put the following in a class

private final static SimpleDateFormat dateFormat;
static {
    //as per ISO 8601
    dateFormat = new SimpleDateFormat("yyyy-MM-dd'T'HH:mm:ss");
    //make sure the formatter requires an exact string
    dateFormat.setLenient(false);
    //set "timezone" to Universal Time Coordinates (GMT adjusted by leap seconds)
    dateFormat.setTimeZone(TimeZone.getTimeZone("UTC"));
}

and the following elsewhere in the class:

//to create a string
String nowString = dateFormat.format(new Date());
//to parse a proper string to a date
Date nowDate = dateFormat.parse(nowString);

an ActionListener is an interface for receiving action events, a class that should process action events should implement this interface, then be registered with a component.

an ActionListener can be registered with any object capable of it, typically this is an instance of an AbstactButton class like a JButton or JMenuItem.
Continue reading ‘Java ActionEvents and ActionListeners’ »