factory.java

一个农场

/*
 * Created on 2006-11-13
 *
 * TODO To change the template for this generated file go to
 * Window - Preferences - Java - Code Style - Code Templates
 */
package cn.edu.hunnu.factory;
import java.util.Properties;

import cn.edu.hunnu.product.Product;
import java.lang.ClassNotFoundException;


/**
 * @author spring
 *
 * TODO To change the template for this generated type comment go to
 * Window - Preferences - Java - Code Style - Code Templates
 */
public class Factory {
	
	public Product create(){
	    return new Product();	
	}
	
	public static Factory findFactorytoCreate(String a) throws Exception{
	      String classname=null;
	      Properties properties=Config.p;
	      
	       classname=properties.getProperty(a);
	       if(classname!=null){
	       	Factory factory=null;
	       	try{
	          factory=(Factory)Class.forName(classname).newInstance();
	          } catch (ClassNotFoundException  e) {
	          	throw new Exception("Problem parsing the file: "+e.getMessage());
	      }  
	          return factory;
	       }else{
	         throw new Exception("no factory produce the product :" + a);	
	       } 	
	        	
	}
	

}