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Spring-Boot Tutorial with Examples

Spring Boot makes it easy to create stand-alone, production-grade Spring based Applications that you can "just run". It simplifies the bootstrapping and development of a new Spring application. It avoids xml configurations, maven pom dependencies, etc...


  • Create stand-alone Spring applications.
  • Embed Tomcat, Jetty or Undertow directly (no need to deploy WAR files).
  • Provide opinionated 'starter' POMs to simplify your Maven configuration.
  • Automatically configure Spring whenever possible.
  • Provide production-ready features such as metrics, health checks and externalized configuration.
  • Absolutely no code generation and no requirement for XML configuration.

We are giving spring-boot examples for each and every topic.

Spring-Boot Examples

  1. Spring-Boot initial setup.
  2. Spring-Boot hello world example
  3. What is spring-boot-starter-parent in Spring-Boot pom.xml file?
  4. What is @SpringBootApplication annotation in spring boot?
  5. What is in spring boot?
  6. What is @ConfigurationProperties annotation in spring boot?
  7. Spring Boot @ConfigurationProperties example
  8. Spring Boot @ConfigurationProperties Property Validation
  9. Difference between @ConfigurationProperties and @Value
  10. Spring boot web application configurations.
  11. How to run spring boot application through command line?
  12. How to run spring boot as a standalone application (non-web)?
  13. Spring boot property resolution order.
  14. Spring Boot – Profile based properties example.
  15. How to configure logback (SLF4J) logging to spring boot applications?
  16. How to update application context path in spring boot?
  17. How to disable spring logo banner in spring boot?
  18. Spring Data JPA with Spring Boot Applications - Oracle - example
  19. Spring Data JPA with Spring Boot Applications - MySql example
  20. How to configure Spring Boot to show Hibernate SQL Query in logs?
  21. Spring Boot – List all Beans loaded in the ApplicationContext
  22. How to load external property files into Spring Boot application?
  23. How to rename file in Spring Boot application?
  24. How to configure multiple DataSources (Databases) with Spring Boot and Spring Data?
Knowledge Centre
What is abstract class or abstract method?
We cannot create instance for an abstract class. We can able to create instance for its subclass only. By specifying abstract keyword just before class, we can make a class as abstract class.

public abstract class MyAbstractClass{


Abstract class may or may not contains abstract methods. Abstract method is just method signature, it does not containes any implementation. Its subclass must provide implementation for abstract methods. Abstract methods are looks like as given below:

public abstract int getLength();
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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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Reference: Java™ Platform Standard Ed. 7 - API Specification | Java™ Platform Standard Ed. 8 - API Specification | Java is registered trademark of Oracle.
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