Examples of the Calendar class in java

Calendar class, it is an abstract class that encapsulates all calendar field values. The values ​​can be obtained through a unified method based on the different calendar fields passed in.

(Recommended tutorial: java introductory tutorial)

1. Get a calendar object

Calendar c = Calendar.getInstance()；//返回的是子类对象

2.Member method

public void add(int field,int amount):根据给定的日历字段和对应的时间，来对当前的日历进行操作。
public final void set(int year,int month,int date):设置当前日历的年月日

(Video tutorial recommendation: java video tutorial)

Code implementation:

import java.util.Calendar;
 
/*
 * public void add(int field,int amount):根据给定的日历字段和对应的时间，来对当前的日历进行操作。
 * public final void set(int year,int month,int date):设置当前日历的年月日
 */
public class CalendarDemo {
	public static void main(String[] args) {
		// 获取当前的日历时间
		Calendar c = Calendar.getInstance();
 
		// 获取年
		int year = c.get(Calendar.YEAR);
		// 获取月
		int month = c.get(Calendar.MONTH);
		// 获取日
		int date = c.get(Calendar.DATE);
		System.out.println(year + "年" + (month + 1) + "月" + date + "日");
 
		// // 三年前的今天
		// c.add(Calendar.YEAR, -3);
		// // 获取年
		// year = c.get(Calendar.YEAR);
		// // 获取月
		// month = c.get(Calendar.MONTH);
		// // 获取日
		// date = c.get(Calendar.DATE);
		// System.out.println(year + "年" + (month + 1) + "月" + date + "日");
 
		// 5年后的10天前
		c.add(Calendar.YEAR, 5);
		c.add(Calendar.DATE, -10);
		// 获取年
		year = c.get(Calendar.YEAR);
		// 获取月
		month = c.get(Calendar.MONTH);
		// 获取日
		date = c.get(Calendar.DATE);
		System.out.println(year + "年" + (month + 1) + "月" + date + "日");
		System.out.println("--------------");
 
		c.set(2011, 11, 11);
		// 获取年
		year = c.get(Calendar.YEAR);
		// 获取月
		month = c.get(Calendar.MONTH);
		// 获取日
		date = c.get(Calendar.DATE);
		System.out.println(year + "年" + (month + 1) + "月" + date + "日");
	}
}

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