leapyear.java

在控制台输入一个年份

package cn.com;

import java.io.BufferedReader;
import java.io.IOException;
import java.io.InputStreamReader;

/**
 * 输入年份判断是否是闰年，直到输入0才退出程序。（考察&&运算和闰年表示法）
 * @author Administrator
 */
public class LeapYear {
	
	public static int input(){
		int year = 0;
		BufferedReader br = new BufferedReader(new InputStreamReader(System.in));
		System.out.println("请输入一个年份:");
		try {
			String str = br.readLine();
			year = Integer.parseInt(str);
		} catch (IOException e) {
			e.printStackTrace();
		}
		return year;
	}

	public static void main(String[] args) {
		int year = input();
		
		while(year != 0){
			if(year < 0){
				System.out.println("Error");
			}else if(year%400 == 0 || (year%4 == 0 && year%100 != 0)){
				System.out.println(year + " is leap year!");
			}else{
				System.out.println(year + " is not leap year!");
			}
			
			year = input();
		}
		
		System.out.println("程序已经退出!");
	}

}