如何创建表示矩形的2个类 [英] How do I create 2 classes that represent a rectangle

问题描述

我需要创建一个抽象的形状类，它具有设置和获取对象宽度的方法。然后我需要编写一个矩形类，使用设置和获取长度的方法扩展形状类，以及计算和打印区域（宽度x长度）。我不确定如何开始这个请帮助



我尝试过：

 public class Shape {
 
 private double width = 100; 
私人双倍身高= 500; 
 
 public Shape（int w，int h）{
 this.width = 5; 
 this.setHeight（2）; 
} 
 public Shape（双w，双h）{
 width = w; 
 height = h; 
} 
 public void setWidth（double width）{
 this.width = width; 
} 
 
 public double getWidth（）{
返回宽度; 
} 
 public double getHeight（）{
返回高度; 
} 
 public void setHeight（double height）{
 this.height = height;} 
} 

解决方案

你不知道抽象类是什么，请看看：摘要方法和类 [ ^

i need to create a abstract shape class that has methods of setting and getting the width of the object. then i need to write a rectangle class that extends the shape class with methods of setting and getting the length as well as calculating and printing the area (width x length). im not sure on how to start this please help

What I have tried:

public class Shape {

   private double width = 100;
   private double height = 500;

    public Shape(int w, int h) {
        this.width = 5;
        this.setHeight(2);
    } 
    public Shape(double w, double h) {
    width = w;
    height = h;
    }
    public void setWidth(double width){
    	   this.width = width;
    	}

    	public double getWidth(){
    	   return width;
    	}
		public double getHeight() {
			return height;
		}
	public void setHeight(double height) {
			this.height = height;}
}

解决方案

You have no inkling of what abstract class is, check this out: Abstract Methods and Classes[^]

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