java 面积编程题

发布网友发布时间：2023-07-04 08:58

共2个回答

热心网友时间：2023-10-10 16:11

public class Test
{
public static void main(String[] args)
{
Circle c = new Circle("black",5.2);
Rectangle r = new Rectangle("white",2.3,3.5);
System.out.println(c.show());
System.out.println(r.show());
}
}

abstract class Shape
{
String color;
Shape()
{}
Shape(String color)
{
this.color = color;
}
abstract public double getArea();
}
class Circle extends Shape
{
private double r;
Circle(String color,double r)
{
this.color = color;
this.r = r;
}
public double getArea()
{
return Math.PI*Math.pow(r,2);
}
public String show()
{
return "r:" + r + ", color:" + color;
}
}
class Rectangle extends Shape
{
private double a,b;
Rectangle(String color,double a,double b)
{
this.color = color;
this.a = a;
this.b = b;
}
public double getArea()
{
return a*b;
}
public String show()
{
return "a:" + a + " b:" + b +", color:" + color;
}
}

热心网友时间：2023-10-10 16:12

自己写思路都这么清楚了还不动手写要是概念模糊还有人乐意提点你像这样具体的题纯粹就是手懒