java输入年份打印该年份的年历

import java.util.Scanner;
public class rili {
	public static void main(String[] args ){
		System.out.print("\t\t\t日历查询器\n");
		System.out.print("输入年份");
		Scanner yy = new Scanner(System.in);
		@SuppressWarnings("unused")
		int type=yy.nextInt();
		String answer="";
		int monthday;
		boolean pingyear;
		int year=0 ;
		do{

			if(year%4==0&&year%100!=0||year%400==0){
				pingyear=false;
			}else pingyear=true;

			int sumyearday=0,i=1900;
			do{int x;if(i%4==0&&i%100!=0||i%400==0)
			{x=366;}
			else{x=365;}
			sumyearday=sumyearday+x;i++;

			}while(i