第七周作业

package ww;

public class Rectangle {
    int length;
    int width;

    public void area() {
        System.out.println(length * width);
    }

    public void per() {
        System.out.println((length + width) * 2);
    }

    public void all() {
        System.out.println("长是" + length);
        System.out.println("宽是" + length);
        System.out.println("面积是");
        area();
        System.out.println("周长是");
        per();
    }
}

package ww;

import java.util.Scanner;

public class text {

    public static void main(String[] args) {
        Rectangle r1 = new Rectangle();
        Scanner input = new Scanner(System.in);
        System.out.print("请输入长:");
        r1.length = input.nextInt();
        System.out.print("请输入宽:");
        r1.width = input.nextInt();
        r1.all();
    }

}