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                # Java 程序:檢查閏年 > 原文: [https://beginnersbook.com/2017/09/java-program-to-check-leap-year/](https://beginnersbook.com/2017/09/java-program-to-check-leap-year/) 在這里,我們將編寫一個 java 程序來檢查輸入年份是否是閏年。在我們看到該程序之前,讓我們看看如何確定一年是否是數學上的閏年: 要確定一年是否是閏年,請按以下步驟操作: 1. 如果年份可被 4 整除,轉到步驟 2.否則,轉到步驟 5\. 2. 如果年份可以被 100 整除,請轉到步驟 3.否則,轉到步驟 4\. 3. 如果年份可以整除到 400,轉到步驟 4.否則,轉到步驟 5\. 4. 年份是閏年(有 366 天)。 5. 這一年不是閏年(它有 365 天)。 [這些步驟的來源](https://support.microsoft.com/en-in/help/214019/method-to-determine-whether-a-year-is-a-leap-year)。 ## 示例:用于檢查輸入年份是否為跳躍的程序 這里我們使用`Scanner`類來獲取用戶的輸入,然后我們使用`if-else`語句編寫邏輯來檢查閏年。要理解這個程序,你應該具備以下[核心 Java 教程](https://beginnersbook.com/java-tutorial-for-beginners-with-examples/)的概念: → [`If-else`語句](https://beginnersbook.com/2017/08/if-else-statement-in-java/) →[Java 程序:讀取輸入數字](https://beginnersbook.com/2017/09/java-program-to-read-integer-value-from-the-standard-input/) ```java import java.util.Scanner; public class Demo { public static void main(String[] args) { int year; Scanner scan = new Scanner(System.in); System.out.println("Enter any Year:"); year = scan.nextInt(); scan.close(); boolean isLeap = false; if(year % 4 == 0) { if( year % 100 == 0) { if ( year % 400 == 0) isLeap = true; else isLeap = false; } else isLeap = true; } else { isLeap = false; } if(isLeap==true) System.out.println(year + " is a Leap Year."); else System.out.println(year + " is not a Leap Year."); } } ``` **輸出:** ```java Enter any Year: 2001 2001 is not a Leap Year. ```
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