lineitem.java

一个很不错的网上小型购物系统

package domain;

public class LineItem implements Comparable {

	private String productId;

	private String productName;

	private double price;

	private int num;

	public int getNum() {
		return num;
	}

	public void setNum(int num) {
		this.num = num;
	}

	public double getPrice() {
		return price;
	}

	public void setPrice(double price) {
		this.price = price;
	}

	public String getProductId() {
		return productId;
	}

	public void setProductId(String productId) {
		this.productId = productId;
	}

	public String getProductName() {
		return productName;
	}

	public void setProductName(String productName) {
		this.productName = productName;
	}

	public boolean equals(Object obj) {
		if (obj instanceof LineItem) {
			LineItem item = (LineItem) obj;
			return this.productId.equals(item.productId);
		} else {
			return false;
		}
	}

	public int hashCode() {
		return this.productId.hashCode();
	}

	public int compareTo(Object o) {
		LineItem item = (LineItem) o;
		return productId.compareTo(item.productId);
	}
}