/**
 * Abstract strategy to compute the area of a geometrical shape.

 * @author Dung X. Nguyen
 * <p>
 * Copyright 1999 by Dung X. Nguyen - Al rights reserved.
 */
public abstract class AShape
{
	/**
	 * For concrete subclasses to provide code to compute the area.
	 * @return this Shape's area.
	 */
	public abstract double dArea();
}