package homework;

import java.util.Scanner;

public class Rectangle {

	public static void main(String[] args) {

	}

	Scanner sc = new Scanner(System.in);

	double length = sc.nextDouble();

	double width = sc.nextDouble();

	double area = length * width;

	double per = 2 * (length + width);

	public void getArea() {

		System.out.println("长方形的面积为：" + area);

	}

	public void getPer() {

		System.out.println("长方形的周长为：" + per);

	}

	public void showAll() {

		System.out.println("长方形的面积为" + area + ",  " + "长方形的周长为：" + per+"  ;");

		System.out.println("长方形的长为：" + length + ",  " + "长方形的宽为：" + width);

	}

}

package homework;

import java.util.Scanner;

public class TestRectangle {

	public static void main(String[] args) {

		// TODO Auto-generated method stub

		System.out.println("请输入长方形的长和宽：");

		Rectangle r = new Rectangle();

		r.getArea();

		r.getPer();

		r.showAll();

	}

}