package library.holdings;

public class Video extends HoldingImpl {
    private int length;

    public Video(String title, int length) {
	super(title);
	setLength(length);
    }

    public void setLength(int length) {
	if (length < 0)
	    throw new IllegalArgumentException("negative length");
	this.length = length;
    }

    public int getLength() {
	return length;
    }

    public String toString() {
	return "Video: " + super.toString() + " length: " + length;
    }

    public boolean equals (Object rhs) {
	if (rhs instanceof Video) {
	    Video v = (Video)rhs;
	    return super.equals(rhs) && length == v.length;
	}
	return false;
    }
}