蓝桥杯-世纪末的星期（Java Calendar的使用）

import java.util.*;
public class Main {
	
	public static void main(String[] args){
		Scanner  scanner = new Scanner(System.in);
		Calendar calendar = Calendar.getInstance();
		for(int i=1999;i<=10000;i+=100){
			calendar.set(Calendar.YEAR, i);
			calendar.set(Calendar.MONTH,11);
			calendar.set(Calendar.DATE,31);
			int t =calendar.get(Calendar.DAY_OF_WEEK);
			if(t==1){
				System.out.println(i);
				break;
			}
			
		}
		
	}

}