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:
2
Enter the width of Rectangle:
8
Area 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