java裏Date對象格式化爲Sun Feb 01 2015格式

上面格式化有兩種方式：

一是用DateFormat格式化：

        Calendar calendar = Calendar.getInstance();
        calendar.set(2015, 1, 1);
        Date date = calendar.getTime();
        DateFormat df = new SimpleDateFormat("EEE MMM dd yyyy", Locale.US); 
        System.out.println(df.format(date));

二是直接用String類的format方法：

        Calendar calendar = Calendar.getInstance();
        calendar.set(2015, 1, 1);
        Date date = calendar.getTime();
        System.out.println(String.format(Locale.US, "%ta", date));
        System.out.println(String.format(Locale.US, "%tb", date));