java定义一个圆_JAVA：定义一个圆类Circle，成员变量：半径 radius；

最新推荐文章于 2023-12-19 23:00:55 发布

原创最新推荐文章于 2023-12-19 23:00:55 发布 · 1.5w 阅读

40 ·

CC 4.0 BY-SA版权

文章标签：

#java定义一个圆

这是一个Java程序，用于计算圆形的周长和面积，以及圆柱体和圆锥体的侧面积、表面积和体积。代码中定义了Circle、Cylinder和Vertebral类，分别代表圆、圆柱和圆锥，实现了相关几何属性的计算方法。

摘要生成于 C知道，由 DeepSeek-R1 满血版支持，前往体验 >

展开全部

纯手写代码，望采纳，谢谢！

public class Main{

public static void main(String[] ags) {

double radius = 2.5;

double width = radius * 2;

double height = 10;

Circle circle = new Circle(radius);

System.out.println("圆形周长：" + circle.calculgirth());

System.out.println("圆形面积：" + circle.calculSquare());

Cylinder cylinder = new Cylinder(width, height);

System.out.println("圆柱体侧面积：" + cylinder.calculSideArea());

System.out.println("圆柱体面积：" + cylinder.calculSurfaceArea());

System.out.println("圆柱体体e68a84e8a2ad62616964757a686964616f31333365653830积：" + cylinder.calculVolume());

Vertebral vertebral = new Vertebral(width, height);

System.out.println("圆锥体体侧面积：" + vertebral.calculSideArea());

System.out.println("圆锥体面积：" + vertebral.calculSurfaceArea());

System.out.println("圆锥体体积：" + vertebral.calculVolume());

}

public class Circle {

private double radius;

private double pai = 3.14;

public double getRadius() {

return radius;

}

public void setRadius(double radius) {

this.radius = radius;

}

public Circle(double radius) {

this.radius = radius;

}

public Circle() {

}

/**

* 圆形周长

* 2πr

* 圆形周长 = 2 x π x 半径

* @return

public double calculgirth() {

return 2 * pai * radius;

}

/**

* 圆形面积

* πr²

* 圆形面积=π x 半径的平方

* @return

public double calculSquare() {

return pai * (radius * radius);

}

public class Cylinder {

private double width;

private double height;

private Circle circle;

public double getWidth() {

return width;

}

public void setWidth(double width) {

this.width = width;

//设置圆柱体宽度时并设置圆的半径

circle = new Circle(width / 2);

}

public double getHeight() {

return height;

}

public void setHeight(double height) {

this.height = height;

}

public Cylinder(double width, double height) {

this.width = width;

this.height = height;

//设置圆柱体宽度时并设置圆的半径

circle = new Circle(width / 2);

}

public Cylinder() {

}

/**

* 计算侧面积

* 圆柱体侧面积=底面周长x高

* @return

public double calculSideArea() {

return circle.calculgirth() * height;

}

/**

* 计算表面积

* 圆柱体表面积 = 侧面积+底面积x2

* @return

public double calculSurfaceArea() {

return (calculSideArea() + circle.calculSquare()) * 2;

}

/**

* 计算体积圆柱体积=π r² h=s底 h

* 表面积 = 底面积 x 高

* @return

public double calculVolume() {

return circle.calculSquare() * height;

}

/**

* ①。侧面积=πRL

* ②。全面积=πR(L+R)

* ③。体积=πR²H/3

* ④。侧母线长L=√(R²+H²)

public class Vertebral {

private double width;

private double height;

private Circle circle;

public double getWidth() {

return width;

}

public void setWidth(double width) {

this.width = width;

circle = new Circle(width / 2);

}

public double getHeight() {

return height;

}

public void setHeight(double height) {

this.height = height;

}

public Vertebral(double width, double height) {

this.width = width;

this.height = height;

circle = new Circle(width / 2);

}

public Vertebral() {

}

/**

* 圆锥侧母线长L

* 圆锥侧母线长 = 开方(底面半径x底面半径+高度x高度)

* @return

public double calculSideBusLine() {

return Math.sqrt(circle.radius * circle.radius + height * height);

}

/**

* 圆锥体侧面积

* 圆锥体侧面积 = π x R x L

* 圆锥体侧面积 = π x 底面半径 x 侧母线长

* @return

public double calculSideArea() {

return circle.pai * circle.radius * calculSideBusLine();

}

/**

* 圆锥表面积

* 圆锥表面积 = πR(L+R)

* 圆锥表面积 = π x 底面半径 x (侧母线长 + 底边半径)

public double calculSurfaceArea() {

return circle.pai * circle.radius * (calculSideBusLine() + circle.radius);

}

/**

* 圆锥体积

* 圆锥体积=πR²H/3

public double calculVolume() {

return circle.pai * (circle.radius * circle.radius) * height / 3;

}