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What is the difference between Spring Boot and the Spring framework?


Answer:

Spring framework is a Injection dependency framework at first targeting managing life-cycle of Java components (beans). Today, Spring framework is pretty bloated with tons facilities/helpers on top of it. But if you look at the big picture, it is still a framework that glue things together, a middle man to MVC frameworks (Struts 1,2, JSF etc), ORM frameworks (Hibernate, iBatis, JOOQ etc) and other necessary facilities (Quartz, Email, you can tell, whatever you need, most likely, there's a Spring support). It takes quite a lengthy tutorial to set Spring framework up and running because Spring framework nature is to provide flexibility of choices to you.

Spring boot on the other hand is built on a totally different mantra. It's basically a suite, pre-configured, pre-sugared set of frameworks/technologies to reduce boiler plate configuration providing you the shortest way to have a Spring web application up and running with smallest line of code/configuration out-of-the-box. As you can see from there Spring Boot page, it took less than 20 lines of code to have a simple RESTful application up and running with almost zero configuration. It definitely has a ton of way to configure application to match your need.

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Transient and Volatile Modifiers
Transient: The transient modifier applies to variables only and it is not stored as part of its object's Persistent state. Transient variables are not serialized.

Volatile: Volatile modifier applies to variables only and it tells the compiler that the variable modified by volatile can be changed unexpectedly by other parts of the program.
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About Author

I'm Nataraja Gootooru, programmer by profession and passionate about technologies. All examples given here are as simple as possible to help beginners. The source code is compiled and tested in my dev environment.

If you come across any mistakes or bugs, please email me to [email protected].

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