需求:
按照课堂上所讲要求定义一个长方形类,并定义其求周长和面积的方法,然后定义一个测试类进行测试。
package com.company; public class Test { public static void main(String[] args) { int length; int width; Scanner sc = new Scanner(System.in); System.out.println("请输入长方形的长"); int length = sc.nextInt(); System.out.println("请输入长方形的宽"); int width =sc.nextInt(); Rectangle rec=new Rectangle(); rec.setLength(length); rec.setWidth(width); System.out.println("周长是:"+rec.getPerimeter()); System.out.println("面积是:"+rec.getArea()); } } class Rectangle{ private int length; private int width; public Rectangle(){} public void setLength(int length){ this.length=length; } public void setWidth(int width){ this.width=width; } public int getPerimeter(){ return int (length + width)*2; } public void getArea(){ return int width*length; } }