package com.study.demo2; public class Rectangle { private double width = 1.0; private double height = 1.0; public Rectangle() {} public Rectangle(double width, double height) { this.width = width; this.height = height; } public double getArea() { return width * height; } public double getPerimeter() { return 2 * (width + height); } public double getWidth() { return width; } public void setWidth(double width) { this.width = width; } public double getHeight() { return height; } public void setHeight(double height) { this.height = height; } }