Parsing many Date items

I have a list with 开发者_JAVA百科many Date Strings such as "Fri, 08 Apr 2011 22:28:00 -0400" and need to parse them to a proper format (Friday, 08. April 2011). My problem is that the device needs a very very long time parsing > 10 date objects and occasionally runs out of memory. Is there a more efficient way parsing dates as:

SimpleDateFormat sdf = new SimpleDateFormat("E, dd MMM yyyy HH:mm:ss Z", Locale.ENGLISH);
// later in code
try {
        Date date = sdf.parse(myDateString);
        return DateFormat.format("dd. MMMM yyyy", date).toString();
    } catch (java.text.ParseException e) {
    }

How can I parse many date Strings very fast?

Try this : Alternatives to FastDateFormat for efficient date parsing?

One thing you can do is to store the output DateFormat, like you do with the input DateFormat, so that you don't have to create a new one every time:

DateFormat parser = new SimpleDateFormat("E, dd MMM yyyy HH:mm:ss Z", Locale.ENGLISH);
DateFormat formatter = new SimpleDateFormat("dd. MMMM yyyy");

// later in code
try {
    Date date = parser.parse(myDateString);
    return formatter.format(date);
} catch (java.text.ParseException e) {}

If possible, assign this task to your database (assuming SQLite) and see if its Date and Time function are useful in your case.