Calender类

public abstract class Calendarextends Objectimplements Serializable, Cloneable, Comparable<Calendar>

此类是一个抽象类，既然是抽象类则使用的时候肯定要依靠其子类进行实例化操作。使用“GregorianCalendar”类就可以完成功能。

 package org.lxh.calendardemo;import java.util.Calendar;import java.util.GregorianCalendar;public class CalendarDemo {public static void main(String[] args) {Calendar calendar = new GregorianCalendar();System.out.println("YEAR: " + calendar.get(Calendar.YEAR));System.out.println("MONTH: " + (calendar.get(Calendar.MONTH) + 1));System.out.println("DAY_OF_MONTH: "+ calendar.get(Calendar.DAY_OF_MONTH));System.out.println("HOUR_OF_DAY: " + calendar.get(Calendar.HOUR_OF_DAY));System.out.println("MINUTE: " + calendar.get(Calendar.MINUTE));System.out.println("SECOND: " + calendar.get(Calendar.SECOND));System.out.println("MILLISECOND: " + calendar.get(Calendar.MILLISECOND));}}

需要说明的是，获得的月份为实际的月份值减1，获得的星期的值和Date类不一样。在Calendar类中，周日是1，周一是2，周二是3，依次类推。