public static Session getSession() return sessionFactory.openSession();
If you are looking for the JAR file containing the class org.hibernate.cfg.Configuration , you are likely setting up a Hibernate project (versions 3.x, 4.x, or 5.x). This class is the core bootstrapping class for Hibernate, used to build the SessionFactory . org.hibernate.cfg.configuration jar download
<dependency> <groupId>org.hibernate</groupId> <artifactId>hibernate-core</artifactId> <version>5.6.15.Final</version> </dependency> For older projects using Hibernate 3: public static Session getSession() return sessionFactory