Top 5 Spring and Hibernate Training Courses for Java JEE Programmers

Spring and Hibernate are two of the hottest and most in-demand web frameworks in Java world and also two of the most essential skill for any Java programmer to get a Job in web development space. The Spring framework is in around from 2004 and established itself as the leading framework to develop Java applications both in core Java and web development area. The Spring framework comes with a lot of modules to support a different kind of developments e.g Spring Security to address the security requirements of most web and enterprise Java applications. It supports single sign-on, LDAP authentication, Role-based access control, and much more such essential features. Spring also supports the development of REST services which is no become standard way to provide web services.

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10 Hibernate Interview Questions and Answers for Java J2EE Programmers

Hibernate Interview Questions are asked on Java J2EE Interviews, mostly for web based enterprise application development role. Success and acceptability of Hibernate framework on Java world have made it one of the most popular Object Relational Mapping (ORM) solution in Java technology stack. Hibernate frees you from database-specific coding and allows you to focus more on utilizing powerful object oriented design principle to implement core business logic. By using Hibernate you can switch between database rather easily and also take advantage of out of box caching facilities provided by Hibernate, in terms of second-level cache and query cache. It also frees Java developer from writing JDBC code as Hibernate takes care of that. In short, provides a complete solution to implement DAO layer of your Java or JEE application. 

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Top 5 Hibernate Books for Java Developers - Best, Must read

Hibernate is one of the most popular, open source ORM (Object Relational Mapping) framework, which has now become a standard for developing persistence layer on Java enterprise application, along with JPA (Java Persistence API). I often receive  requests to suggest which book is best to learn to hibernate or recommendation about some good books on Spring and Hibernate. This motivates me to write this article about some of the best book on Hibernate, available in the market. Earlier I have shared some of the must-read books on Spring framework for Java developer, which is quite helpful for picking a book on Spring. Similar to Spring framework, experience in Hibernate is most sought after thing in Java JEE development roles.

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Why JPA Entity or Hibernate Persistence Class Should Not be Final?

One of the interesting hibernate interview questions is, why you should not make a Hibernate persistent class final? I'll try to answer this question in this short blog post. Use of proxies is the core feature of Hibernate (one of the most popular ORM framework for Java Projects) for implementing key performance features e.g. lazy loading and lazy associations fetching. In order to use a proxy in place of real class, your hibernate persistence class must be either non-final or the implementation of an interface that declares all of the public methods. Why? because you cannot extend a final class in Java, and to stand up as a proxy, proxy class must satisfy the IS-A relation, which comes either by extending a class using "extends", or implementing an interface using "implements".

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