第七次作业

package Dmh;
import java.util.Scanner;
public class 419zy {

    public static void main(String[] args) {
        // TODO Auto-generated method stub
        Rectangle al = new Rectangle();
        Scanner input = new Scanner(System.in);
        System.out.print("请输入长：");
        al.length = input.nextInt();
        System.out.print("请输入宽：");
        al.width = input.nextInt();
        al.showAll();
    }

}

 

package Dmh;

public class 419zy {
    int length;
    int width;
    
    public void getArea(){
        System.out.println(length * width);
    }

    public void getPer(){
        System.out.println((length + width)*2);
    }
    public void showAll(){
        System.out.println("长是" + length);
        System.out.println("宽是" + width);
        System.out.println("面积是");
        getArea();
        System.out.println("周长是");
        getPer();
    }
}