java 的 Calendar

package calendar;import java.text.SimpleDateFormat;import java.util.Calendar;import java.util.Date;public class Time {public static void main(String[] args) {// TODO Auto-generated method stubCalendar c = Calendar.getInstance();Date date = c.getTime();SimpleDateFormat sdf = new SimpleDateFormat("yyyy/MM/dd HH:mm:ss");String now = sdf.format(date);System.out.println(now);}}