顯示上圖的錯誤，但是不知道錯在哪？謝謝告知

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(){

//創建配置對象

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

//創建服務注冊對象

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

//創建會話工廠對象

sessionFactory=config.buildSessionFactory(serviceRegistry);

//會話對象

session=sessionFactory.openSession();

//開啟事務

transaction=session.beginTransaction();

}

@After

public void destroy(){

transaction.commit();

session.close();

sessionFactory.close();

}

@Test

public void testSaveStudents(){

//創建學生對象

Students s=new Students(1,"張三豐","男",new Date(),"武當山");

session.save(s);//保存對象到數據庫

}

}