java日期和字符串的相互转换

private static void getDate() {
// TODO Auto-generated method stub
long time = System.currentTimeMillis();
Date date = new Date(time);
System.out.println("毫秒转日期"+date);
System.out.println("日期转毫秒"+date.getTime());
DateFormat dateFormat = new SimpleDateFormat("yyyy-MM-dd HH:dd:SS");
String s = dateFormat.format(date);
System.out.println("日期转字符串"+s);
try {
System.out.println("字符串转日期"+dateFormat.parse(s));
} catch (ParseException e) {
// TODO Auto-generated catch block
e.printStackTrace();
}
}