in thread "main" java.lang.NoClassDefFoundError 错误
in thread "main" java.lang.NoClassDefFoundError: Could not initialize class com.dao.SQLHelper
at com.dao.BaseDAO.get(BaseDAO.java:27)
at com.dao.usersDAO.get(usersDAO.java:8)
at test.Test.main(Test.java:9)
为什么无法初始化类呢?