第3周实验

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

public class Leadyear {

/**
* 判断一个年份是否为闰年
*
* @param args
*/
public static void main(String[] args) {

String s = " ";
System.out.println("请输入一个年份year：");
//输入年份
try {
BufferedReader in = new BufferedReader(new InputStreamReader(
System.in));
s = in.readLine();
} catch (IOException e) {
}
int year = Integer.parseInt(s);

Leadyear aaa = new Leadyear();
boolean leadyear = aaa.judgeyear(year);
aaa.printLeadyear(year, leadyear);

}

//判断年份是否为闰年
private boolean judgeyear(int year) {
boolean leadyear;
if (year % 4 == 0 && year % 100 != 0) {
leadyear = true;
} else if (year % 400 == 0) {
leadyear = true;
} else
leadyear = false;
return leadyear;
}

//打印最终的判断结果
private void printLeadyear(int year, boolean leadyear) {
if (leadyear)
System.out.println(year + "是闰年！");
else
System.out.println(year + "不是闰年！");
}
}