catalog.java

CMU Java课程设计

import java.util.*;
import java.awt.*;
import javax.swing.*;
public class Catalog {
	Vector products;
	private JList list;

	public Catalog(){
		//Vector v=new Vector();
		//v.add(new Product());
		products=new Vector();
	}
	public void addProduct(Product product) {
		products.add(product);
	}
	public Iterator getProductsIterator() {
		Iterator i=products.iterator();
		return i;
	}
	public Product getProduct(String code){
		Iterator i=getProductsIterator();
		for(;i.hasNext();){
			Product p=((Product)i.next());
			if(code.equals(p.getCode()))
				return p;
		}
		return null;
	}
	public int getNumberOfProducts(){
		return products.size();
	}
	
    public String[] getCodes(){
		
		Iterator i= getProductsIterator();
		String []s=new String[getNumberOfProducts()];
		for(int j=0;i.hasNext();j++){
			Product p=((Product)i.next());
			s[j]=p.getCode();	
		}
		return s;
	}
	
}