public class User {

    private String userName,password;

    public User(String userName, String password) {

        this.setUserName(userName);

        this.setPassword(password);

    }

    public User() {

    }

    public String getUserName() {

        return this.userName;

    }

    public String getPassword() {

        return this.password;

    }

    public void setUserName(String userName) {

        this.userName = userName;

    }

    public void setPassword(String password) {

        this.password = password;

    }

}

=====

public class UserManager {

public void check(User one, User two) {

if (one.getUserName().equals(two.getUserName()) && one.getPassword().equals(two.getPassword())) {

System.out.println("用户名和密码一致");

} else {

System.out.println("用户名和密码不一致");

}

}

}

======

public class Test{

    // 测试方法

public static void main(String[] args) {

     //实例化对象，调用相关方法实现运行效果

     User u1=new User();

     User u2=new User("Mike","123456");

     UserManager um=new UserManager();

     u1.setUserName("Lucy");

     u1.setPassword("123456");

     System.out.println("用户名: " + u1.getUserName());

     System.out.println("密码: " + u1.getPassword());

     System.out.println("用户名: " + u2.getUserName());

     System.out.println("密码: " + u2.getPassword());

     System.out.println("======================================");

     um.check(u1, u2);

    }

}