catalog.java

java学习的必要的资料,servlet的说明很好

package com.estore.struts.entity;

import java.io.Serializable;
import java.util.HashSet;
import java.util.Set;

public class Catalog  implements Serializable{
	/**
	 * 
	 */
	private static final long serialVersionUID = 8356139731489037668L;
	private Integer catalogid;
	private String catalogname;
	private String description;
	private Set<Product> products=new HashSet<Product>();
	
	public void addProduct(Product product){
		this.products.add(product);
	}
	
	public Set<Product> getProducts() {
		return products;
	}
	public void setProducts(Set<Product> products) {
		this.products = products;
	}
	public Integer getCatalogid() {
		return catalogid;
	}
	public void setCatalogid(Integer catalogid) {
		this.catalogid = catalogid;
	}
	public String getCatalogname() {
		return catalogname;
	}
	public void setCatalogname(String catalogname) {
		this.catalogname = catalogname;
	}
	public String getDescription() {
		return description;
	}
	public void setDescription(String description) {
		this.description = description;
	}
	@Override
	public boolean equals(Object obj) {
		if(obj instanceof Catalog){
			Catalog catalog = (Catalog)obj;
			if(this.catalogid == catalog.catalogid 
					|| this.catalogname.equals(catalog.getCatalogname()) 
					|| this.description.equals(catalog.getDescription()))
				return true;
		}
		return false;
	}
	@Override
	public int hashCode() {
		return this.catalogid.hashCode()^catalogname.hashCode()^description.hashCode();
	}

	@Override
	public String toString() {
		// TODO Auto-generated method stub
		return "catalogid: "+catalogid
		 		+"\n catalogname: "+catalogname
		 		+"\n description: "+description
//		 		+"\n products size: "+products.size();
				+"\n ---Catalog end--- \n";
	}
	
	
	
}