Java 实例 计算矩形面积

来源:这里教程网 时间:2026-02-17 20:17:10 作者:

在本教程中,我们将看到如何计算矩形面积

程序 1:

用户将在程序执行期间提供长度和宽度值,并根据提供的值计算面积。

/** * @author: BeginnersBook.com * @description: Program to Calculate Area of rectangle */import java.util.Scanner;class AreaOfRectangle {   public static void main (String[] args)   {       Scanner scanner = new Scanner(System.in);       System.out.println("Enter the length of Rectangle:");       double length = scanner.nextDouble();       System.out.println("Enter the width of Rectangle:");       double width = scanner.nextDouble();       //Area = length*width;       double area = length*width;       System.out.println("Area of Rectangle is:"+area);   }}

输出:

Enter the length of Rectangle:2Enter the width of Rectangle:8Area of Rectangle is:16.0

程序 2:

在上述程序中,将要求用户提供长度和宽度值。如果您不需要用户交互并且只想在程序中指定值,请参阅以下程序。

/** * @author: BeginnersBook.com * @description: Calculation with no user interaction */class AreaOfRectangle2 {   public static void main (String[] args)   {       double length = 4.5;       double width = 8.0;       double area = length*width;       System.out.println("Area of Rectangle is:"+area);   }}

输出:

Area of Rectangle is:36.0

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