Java 实例计算正方形的面积

2024-07-16 01:05| 来源: 网络整理| 查看: 265

在本教程中，我们将学习如何计算正方形的面积。以下是两种方法：

1）程序 1：提示用户输入正方形的边长

2）程序 2：在程序的源代码中指定正方形的边长。

计划 1：

/** * @author: BeginnersBook.com * @description: Program to Calculate Area of square.Program * will prompt user for entering the side of the square. */ import java.util.Scanner; class SquareAreaDemo { public static void main (String[] args) { System.out.println("Enter Side of Square:"); //Capture the user's input Scanner scanner = new Scanner(System.in); //Storing the captured value in a variable double side = scanner.nextDouble(); //Area of Square = side*side double area = side*side; System.out.println("Area of Square is: "+area); } }

输出：

Enter Side of Square: 2.5 Area of Square is: 6.25

计划 2：

/** * @author: BeginnersBook.com * @description: Program to Calculate Area of square. * No user interaction: Side of square is hard-coded in the * program itself. */ class SquareAreaDemo2 { public static void main (String[] args) { //Value specified in the program itself double side = 4.5; //Area of Square = side*side double area = side*side; System.out.println("Area of Square is: "+area); } }

输出：

Area of Square is: 20.25

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Java 实例 计算正方形的面积

Java 实例计算正方形的面积