关于java 枚举的应用

package com.cnnct.zhk.balance.inaccountmanage.bpo.Recharge;

import com.cnnct.zhk.balance.inaccountmanage.bpo.Recharge.impl.BankCardRechargeImpl;
import com.cnnct.zhk.balance.inaccountmanage.bpo.Recharge.impl.CardRechargeImpl;
import com.cnnct.zhk.balance.inaccountmanage.bpo.Recharge.impl.CoBCRechargeImpl;

public enum PayWay {

	MR(1), MRS(2), MS(3),MQ(4);
	
	private final int title;

	private PayWay(int t) {
		title = t;
	}

	public IRecharge format() {
		switch (title) {
		case 4: case 1:
			return new  BankCardRechargeImpl();
		case 3:
			return new  CardRechargeImpl();
		case 2:
			return new  CoBCRechargeImpl();
		default:
			break;
		}
		return null;
		
           
	}

	
};

package com.cnnct.zhk.balance.inaccountmanage.bpo.Recharge.impl;

import com.cnnct.zhk.balance.inaccountmanage.bpo.Recharge.IRecharge;
import com.cnnct.zhk.balance.inaccountmanage.bpo.Recharge.IRechargeFactory;
import com.cnnct.zhk.balance.inaccountmanage.bpo.Recharge.PayWay;
import com.cnnct.zhk.balance.inaccountmanage.entity.Recharge4DTO;

public class RechargeFactoryImpl implements IRechargeFactory {

	@Override
	public IRecharge getRecharge(Recharge4DTO dto) {
		// TODO Auto-generated method stub
		return null;
	}

	public static void main(String[] args) {
		System.out.println(PayWay.MR.name());
		System.out.println(PayWay.MR.name().getClass());
		System.out.println(PayWay.MR.ordinal());
		System.out.println(PayWay.MRS.ordinal());
		System.out.println(PayWay.valueOf(PayWay.class, "MRS")+"##########");
		PayWay p=PayWay.valueOf(PayWay.class, "MRS");
		
		System.out.println(p.getClass()+"############");
		System.out.println(p.name());
		System.out.println(p.format());
		
		switch (p) {
		case MRS:
			System.out.println(1);
			break;
		case MR:	
			System.out.println(1);
			break;
		case MS:	
			System.out.println(1);
			break;

		default:
			System.out.println("no know");
			break;
		}
		System.out.println(p.format());
	}
}