crctngle.java

本源码主要是上课时所做实验

class Rectangle

{

    private int width;

    private int length;

 

    Rectangle()

    {

        length=30;width=20;

    }

    Rectangle(int l,int w)

    {

       length=l;width=w;

    }

    Rectangle(Rectangle r)

    {

        width=r.width();

        length=r.length();

    }

 

    int width()

    {

        return width;

    }

 

    int length()

    {

        return length;

    }

}

public class CRctngle

{

    public static void main(String args[ ])

    {

        Rectangle x1=new Rectangle();

        Rectangle x2=new Rectangle(50,40);

        Rectangle x3=new Rectangle(x1);

        System.out.println(x1.length());

        System.out.println(x1.width());

        System.out.println(x2.length());

        System.out.println(x2.width());

        System.out.println(x3.length());

        System.out.println(x3.width());

    }

}