显示上图的错误，但是不知道错在哪？谢谢告知

import java.util.Date;

import org.hibernate.Session;

import org.hibernate.SessionFactory;

import org.hibernate.Transaction;

import org.hibernate.cfg.Configuration;

import org.hibernate.service.ServiceRegistry;

import org.hibernate.service.ServiceRegistryBuilder;

import org.junit.After;

import org.junit.Before;

import org.junit.Test;

public class StudentsTest {

private SessionFactory sessionFactory;

private Session session;

private Transaction transaction;

@Before

public void init(){

//创建配置对象

Configuration config=new Configuration().configure();

//创建服务注册对象

ServiceRegistry serviceRegistry=new ServiceRegistryBuilder().applySettings(config.getProperties()).buildServiceRegistry();

//创建会话工厂对象

sessionFactory=config.buildSessionFactory(serviceRegistry);

//会话对象

session=sessionFactory.openSession();

//开启事务

transaction=session.beginTransaction();

}

@After

public void destroy(){

transaction.commit();

session.close();

sessionFactory.close();

}

@Test

public void testSaveStudents(){

//创建学生对象

Students s=new Students(1,"张三丰","男",new Date(),"武当山");

session.save(s);//保存对象到数据库

}

}