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 stub
Calendar 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);
}

}