通过实现简单的银行接口实现账号密码验证码匹配

package com_5_9_bank;

public interface Union {

double saveMoney(double moneyCount);

void getMoney(double taste_money);

boolean checkPwdOrUser(String user, String pwd);

String Verification_Code();

}

package com_5_9_bank;

public interface CCB_Bank extends Union {

double saveMoney(double moneyCount);

void getMoney(double taste_money);

boolean checkPwdOrUser(String user, String pwd);

String Verification_Code();

}

package com_5_9_bank;

public class Card {

double money;
String user = "zhangsan";//定义了账号密码
String pwd = "1234";

}
package com_5_9_bank;

import java.util.Random;

public class ATM implements CCB_Bank {

Card c;

public boolean checkPwdOrUser(String user, String pwd) {

	if ((c.user.equals(user)) && (c.pwd.equals(pwd))) {
		return true;
	}
	return false;