用java 设计一个名为Rectangle的类表示矩形。这个类包括： 两个名为width和height的double类型数据域，它们分别表示矩形的宽 和高。width和height的默认值都为1。 •一个用于创建默认矩形的无参构造方法。 •一个创建指定width和height值的矩形的构造方法。 ·一个名为getArea()的方法，返回该矩形的面积。 •一个名为getPerimeter()的方法，返回周长。 编写一个测试程序，分别输入两个矩形的高和宽，创建两个Rectangle对象。按照顺序显示每个矩形的宽、高、面积和周长。

下面是一个符合要求的Rectangle类的代码实现和测试程序的代码实现：

Rectangle.java

public class Rectangle {
    private double width;
    private double height;
    
    public Rectangle() {
        this.width = 1.0;
        this.height = 1.0;
    }
    
    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 double getHeight() {
        return height;
    }
}

TestRectangle.java

import java.util.Scanner;

public class TestRectangle {
    public static void main(String[] args) {
        Scanner input = new Scanner(System.in);
        
        System.out.print("Enter the width of the first rectangle: ");
        double width1 = input.nextDouble();
        System.out.print("Enter the height of the first rectangle: ");
        double height1 = input.nextDouble();
        Rectangle rectangle1 = new Rectangle(width1, height1);
        
        System.out.print("Enter the width of the second rectangle: ");
        double width2 = input.nextDouble();
        System.out.print("Enter the height of the second rectangle: ");
        double height2 = input.nextDouble();
        Rectangle rectangle2 = new Rectangle(width2, height2);
        
        System.out.println("Rectangle 1:");
        System.out.println("Width: " + rectangle1.getWidth());
        System.out.println("Height: " + rectangle1.getHeight());
        System.out.println("Area: " + rectangle1.getArea());
        System.out.println("Perimeter: " + rectangle1.getPerimeter());
        
        System.out.println("Rectangle 2:");
        System.out.println("Width: " + rectangle2.getWidth());
        System.out.println("Height: " + rectangle2.getHeight());
        System.out.println("Area: " + rectangle2.getArea());
        System.out.println("Perimeter: " + rectangle2.getPerimeter());
    }
}