Method canBeAbove

java/Chapter 9/Question9_10/Box.java:20–28

(Box b)

	}
	
	public boolean canBeAbove(Box b) {
		if (b == null) {
			return true;
		}
		if (width < b.width && height < b.height && depth < b.depth) {
			return true;
		}
		return false;		
	}
	
	public String toString() {
		return "Box(" + width + "," + height + "," + depth + ")";