4.17作业

package ffff;

public class Rectangle {
    int lenght;
    int width;
    public void area()
    {
        System.out.println(lenght*width);
    }
    public void zc(){
        System.out.println(2*(lenght+width));
    }
    public void showall(){
        System.out.println("宽"+width );
        System.out.println("长"+lenght);
        System.out.println("面积");
        area();
        System.out.println("周长");
        zc();
    }
}

package ffff;
import java.util.*;
public class dedseff {

    public static void main(String[] args) {
        // TODO Auto-generated method stub
        Rectangle b=new Rectangle();
        Scanner input=new Scanner(System.in);
        b.lenght=input.nextInt();
        b.width=input.nextInt();
        b.showall();
    }

}