item.java

来自「A system to manage a grocery store with 」· Java 代码 · 共 36 行

package grocerystore;

public class Item implements Comparable {
	
	private Product product;
	private int pieces;
	private double finalPrice;
	
	public Item(Product product, int pieces, double price){
		this.product = product;
		this.pieces = pieces;
		this.finalPrice = price;
	}
	public String getDesc() {
		return product.getDesc();
	}
	
	public int getPieces() {
		return pieces;
	}

	public double getPrice() {
		return finalPrice;
	}
	
	public int compareTo(Object o) {
	
		if (!(o instanceof Item)) 
			throw new IllegalArgumentException();
		
		Item item = (Item)o;

		return this.product.getDesc().compareTo(item.product.getDesc());
	} 
}