如何在两次测试之间重新创建EntityManagerFactory

import javax.persistence.EntityManager;
import javax.persistence.EntityManagerFactory;
import javax.persistence.Persistence;

public class TestClass {
    private static final String PERSISTENCE_UNIT_NAME = "yourPersistenceUnitName";
    private static EntityManagerFactory entityManagerFactory;
    private static EntityManager entityManager;

    public static void main(String[] args) {
        // 创建EntityManagerFactory
        createEntityManagerFactory();

        // 执行第一次测试
        performFirstTest();

        // 关闭EntityManagerFactory
        closeEntityManagerFactory();

        // 创建新的EntityManagerFactory
        createEntityManagerFactory();

        // 执行第二次测试
        performSecondTest();

        // 关闭EntityManagerFactory
        closeEntityManagerFactory();
    }

    private static void createEntityManagerFactory() {
        entityManagerFactory = Persistence.createEntityManagerFactory(PERSISTENCE_UNIT_NAME);
        entityManager = entityManagerFactory.createEntityManager();
    }

    private static void closeEntityManagerFactory() {
        entityManager.close();
        entityManagerFactory.close();
    }

    private static void performFirstTest() {
        // 在这里执行第一次测试的代码
    }

    private static void performSecondTest() {
        // 在这里执行第二次测试的代码
    }
}