打印当前时间，学习使用Date类和Calendar类

import java.util.Calendar;  public class Time {      public static void main(String[] args) {              Calendar calender=Calendar.getInstance();          int year=calender.get(Calendar.YEAR);          int month=calender.get(Calendar.MONTH);          int date=calender.get(Calendar.DATE);          int hour=calender.get(Calendar.HOUR_OF_DAY);          int minute=calender.get(Calendar.MINUTE);          int second=calender.get(Calendar.SECOND);          int week=calender.get(Calendar.DAY_OF_WEEK);          System.out.println(year + "/" + month + "/" + date + " " +hour + ":" +minute + ":" + second + "星期："+(week-1));        }  }