急！求程序！JAVA設(shè)計(jì)圓柱體的類，計(jì)算其表面積和體積

public?class?Cylinder?{//圓柱體類

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private?double?radius;

private?double?height;

public?Cylinder(){}//無參構(gòu)造

public?Cylinder(double?御冊radius,double?height){

this.radius?=?radius;

this.height?=?height;

}

public?double?getPerimeter(){//得到底圓周塌拆陸長

return?2?*?Math.PI?*?this.radius;

}

public?double?getBottomArea(){//得到底面積

return?Math.PI?*?this.radius?*?this.radius?;

}

public?double?getVolume(){//得到體積

return?this.getBottomArea()?*?this.height;

}

public?double?getArea(){//得到表面積

return?this.getBottomArea()*2?+?this.getPerimeter()?*?this.height;

}

public?double?getRadius()?{

return?radius;

}

public?void?setRadius(double?radius)?{

this.radius?=?radius;

}

public?double?getHeight()?{

return?height;

}

public?void?setHeight(double?height)?{

this.height?=?height;

}

}

public?class?RingCylinder?extends?Cylinder?{

private?double?outerRadius;//外半徑

private?double?interRadius;//內(nèi)半徑

private?double?height;

public?RingCylinder(){}

public?RingCylinder(double?outerRadius,double?interRadius,double?height){

this.outerRadius?=?outerRadius;

this.interRadius?=?interRadius;

this.height?=?height;

}

@Override

public?double?getPerimeter()?{//得到內(nèi)圓周長和外圓周長的和

return?2?*?Math.PI?*?(this.outerRadius?+?this.interRadius);

}

@Override

public?double?getBottomArea()?{//得到底部面積

return?Math.PI?*?(this.outerRadius?-?this.interRadius)?*?(this.outerRadius?-?團(tuán)頃this.interRadius);

}

@Override

public?double?getVolume()?{//得到體積

return?this.getBottomArea()?*?this.height;

}

@Override

public?double?getArea()?{

return?this.getBottomArea()*2?+?this.getPerimeter()*this.height;

}

public?double?getOuterRadius()?{

return?outerRadius;

}

public?void?setOuterRadius(double?outerRadius)?{

this.outerRadius?=?outerRadius;

}

public?double?getInterRadius()?{

return?interRadius;

}

public?void?setInterRadius(double?interRadius)?{

this.interRadius?=?interRadius;

}

public?double?getHeight()?{

return?this.height;

}

public?void?setHeight(double?height)?{

this.height?=?height;

}

}

JAVA基礎(chǔ)實(shí)現(xiàn)圓類Circle

/////寫著也夠累的....

public class Cylinder extends Circle{

private double h;

public Cylinder(double h, double r, int x, int y) {

super(r, x, y);

this.h = h;

}

public Cylinder(){

}

public double getH() {

return h;

}

public void setH(double h) {

this.h = h;

}

public double area(){

return 2 * super.area() + super.perimeter() * h;

}

public double volume() {

return super.area() * h;

}

public static void main(String[] args) {

Cylinder cy = new Cylinder(4.5, 2.3, 2 , 3);

System.out.println("area: " + cy.area());

System.out.println("volume: " + cy.volume());

}

}

class Circle{

private int x;

private int y;

private double r;

public Circle(){

}

public Circle(double r, int x, int y) {

this.r = r;

this.x = x;

this.y = y;

}

public int getX() {

return x;

}

public void setX(int x) {

this.x = x;

}

public int getY() {

return y;

}

public void setY(int y) {

this.y = y;

}

public double getR() {

return r;

}

public void setR(double r) {

this.r = r;

}

public double perimeter(){

return 2 * Math.PI * r;

}

public double area(){

return Math.PI * r * r;

}

}

網(wǎng)頁題目：Java圓柱代碼 java實(shí)現(xiàn)圓柱表面積和體積
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