实验报告
1.写一个名为Rectangle的类表示矩形。其属性包括宽width、高height和颜色color,width和height都是double型的,而color则是String类型的。要求该类具有:
(1) 使用构造函数完成各属性的初始赋值
(2) 使用get…()和set…()的形式完成属性的访问及修改
(3) 提供计算面积的getArea()方法和计算周长的getLength()方法
class Rectangle { private double width,height; private String color; public Rectangle(double width,double height,String color){ this.setWidth(width); this.setHeight(height); this.setColor(color); } public void tell(){ System.out.println("宽:"+width+" "+"高:"+height+" "+"颜色:"+color); } public double getWidth(){ return width; } public double getHeight(){ return height; } public String getColor(){ return color; } public void setWidth(double width){ this.width=width; } public void setHeight(double height){ this.height=height; } public void setColor(String color) { this.color=color; } public void getArea(){ System.out.println("面积为:"+(width*height)); } public void getLength(){ System.out.println("周长为:"+(width+height)*2); } } public class Test{ public static void main(String[] args){ Rectangle per=new Rectangle(30,60,"yellow"); per.tell(); per.getArea(); per.getLength(); } }