calendardemo.java

软通公司培训的课件和习题里面有答案。。。

package com.nine.java;

import java.text.DateFormat;
import java.util.*;

public class CalendarDemo {

	public static void main(String[] args) {
		 
		DateFormat dateFormat = DateFormat.getDateInstance(DateFormat.FULL);
		
		Calendar c = Calendar.getInstance() ;

		int year = c.get(Calendar.YEAR);
		int month = c.get(Calendar.MONTH)+1;
		int day = c.get(Calendar.DAY_OF_MONTH);
		System.out.println("Calendar 系统时间:  "+year+"-"+month+"-"+day);
		
		
		GregorianCalendar cd = new GregorianCalendar();
		System.out.println( "GregorianCalendar 系统时间:  "+dateFormat.format(cd.getTime()));
		
		cd.set(GregorianCalendar.DAY_OF_WEEK, GregorianCalendar.FRIDAY);
		System.out.println( "设置星期后的时间:  "+dateFormat.format(cd.getTime()));
		System.out.println(new Date());
	
		
	}

}