public class Rectangle {
  private int width;
  private int height;
  private int red,green,blue;
  public int area() { return width * height; }
//just an example, didn't check the api.
  public Color color () { return new Color (red, green, blue); }
}

public class Rectangle {
  private Dimension size;
  private Color color;
  ...
}

public class A {
  private String a1;
  public void aMeth () {
     print(a1);
  }
}
public class B {
  private String b1;
  public void bMeth () {
     print(b1);
  }
}

public class A {
  private A a;
  private B b;
  ... insert infinite regress
}

public class Rectangle {
  private int width;
  private int height;
  private int red,green,blue;
  public int area() { return width * height; }
//just an example, didn't check the api.
  public Color color () { return new Color (red, green, blue); }
}

public class Rectangle {

    private int lenght = 0;
    private int width = 0;

    public Rectangle (int length, width)
        {
    	this.length = length;
    	this.width = width;
    }

    public int getLength(int length)
    {
    	return length;
    }

    public int getWidth(int width)
    {
    	return wdith;
    }


    public void setLength(int length)
    {
    	this.length = length;
    }

    public void setWidth(int width)
    {
    	this.width = width;
    }
}