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关于判断闰年问题,我的思路是首先判断输入是否为合法输入,在输入合法的基础上才可以判断是否为闰年,判断输入是否异常代码如下:
public static void main(String[] args) {
String s = " ";
System.out.println("请输入一个年份:");
//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);
}
基于上述已经判断输入合法,进行如下判断输入年份是否为闰年:
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;
}
最后打印结果如下:
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!");
}
}
测试用例:
编号 | 输入 | 输出 |
1 | 2012 | 是闰年 |
2 | 2004 | 是闰年 |
3 | 1999 | 不是闰年 |
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原文地址:http://www.cnblogs.com/yangyangao/p/4395804.html