package org.springmodules.db4o.examples.recipemanager.domain; import java.util.ArrayList; import java.util.List; public class Product { private String name; private List validUnits; private List suppliers; public Product(String name, List suppliers) { this.name = name; this.validUnits = new ArrayList(); this.suppliers = new ArrayList(); } public void add(Supplier supplier) { suppliers.add(supplier); } public String toString() { return name; } }