代码实现

package Lab6;

import java.util.Scanner;

abstract class shape {

public abstract double area();

public abstract double peri();

}

class Rect extends shape

{

public int length;

public int width;

public void setdate(int length,int width)

{

this.length = length;

this.width = width;

}

public int getlength()

{

return length;

}

public int getwidth()

{

return width;

}

public double area(){

return this.length*this.width;

}

public double peri(){

return this.length*2+this.width*2;

}

}

class Cub extends Rect

{

private int Height;

public void setdate(int length,int width,int Height)

{

super.setdate(length, width);

this.Height = Height;

this.length = length;

this.width = width;

}

public int getHeight()

{

return Height;

}

public double getvol(){

return this.length*this.width*this.Height;

}

public double getarea(){

return 2*(this.length*this.width+this.Height*this.length+this.Height*this.width);

}

}

public class Lab6 {

public static void main(String[] args) {

// TODO 自动生成的方法存根

boolean x = true;

while(x)

{

System.out.println("请输入1或2选择长方形或长方体:");

Scanner in = new Scanner(System.in);

int n=in.nextInt();

switch (n)

{

case 1:

Rect shp_1 = new Rect();

System.out.println("请输入l,w:");

int l_1=in.nextInt();

int w_1=in.nextInt();

shp_1.setdate(l_1, w_1);

System.out.println("面积："+shp_1.area()+" "+"周长："+shp_1.peri());

break;

case 2:

Cub shp_2 = new Cub();

System.out.println("请输入l,w,h:");

int l_2=in.nextInt();

int w_2=in.nextInt();

int h_2=in.nextInt();

shp_2.setdate(l_2, w_2,h_2);

System.out.println("体积："+shp_2.getvol()+" "+"表面积："+shp_2.getarea());

break;

//default:

}

}

}

}

标签：shp,java,int,多态,Height,width,length,长方体,public

来源： https://www.cnblogs.com/ProtoDrive/p/11084714.html