catch (Throwable ex)的问题

在看关于hibernate的书的时候有上面这段代码，然后用sonarqube分析过后对于静态代码块部分（大约15-20行的位置）报了 Catch Exception instead of Throwable.
上网查了一下ExceptionInInitializerError是一个error，按照道理出现这个问题jvm应该就是死了，那么还有必要catch（Throwable）以及throw new ExceptionInInitializerError(ex);吗？

package util;



import org.hibernate.HibernateException;

import org.hibernate.Session;

import org.hibernate.SessionFactory;

import org.hibernate.cfg.Configuration;



public class HibernateUtil {



	private static SessionFactory sessionFactory;

	private static Configuration configuration = new Configuration();

	// 创建线程局部变量threadLocal，用来保存Hibernate的Session

	private static final ThreadLocal<Session> threadLocal = new ThreadLocal<Session>();

	// 使用静态代码块初始化Hibernate

	static {

		try {

			Configuration cfg = new Configuration().configure(); // 读取配置文件hibernate.cfg.xml

			sessionFactory = cfg.buildSessionFactory(); // 创建SessionFactory

		} catch (Throwable ex) {

			throw new ExceptionInInitializerError(ex);

		}

	}



	// 获得SessionFactory实例

	public static SessionFactory getSessionFactory() {

		return sessionFactory;

	}



	// 获得ThreadLocal 对象管理的Session实例.

	public static Session getSession() throws HibernateException {

		Session session = (Session) threadLocal.get();

		if (session == null || !session.isOpen()) {

			if (sessionFactory == null) {



				rebuildSessionFactory();

			}

			// 通过SessionFactory对象创建Session对象

			session = (sessionFactory != null) ? sessionFactory.openSession() : null;

			// 将新打开的Session实例保存到线程局部变量threadLocal中

			threadLocal.set(session);

		}

		return session;

	}



	// 关闭Session实例

	public static void closeSession() throws HibernateException {

		// 从线程局部变量threadLocal中获取之前存入的Session实例

		Session session = (Session) threadLocal.get();

		threadLocal.set(null);

		if (session != null) {

			session.close();

		}

	}



	// 重建SessionFactory

	public static void rebuildSessionFactory() {

		try {

			configuration.configure("/hibernate.cfg.xml"); // 读取配置文件hibernate.cfg.xml

			sessionFactory = configuration.buildSessionFactory(); // 创建SessionFactory

		} catch (Exception e) {

			System.err.println("Error Creating SessionFactory ");

			e.printStackTrace();

		}

	}



	// 关闭缓存和连接池

	public static void shutdown() {

		getSessionFactory().close();

	}

}