Slides can be found http://asinica.lt/it-academy
Execute
gradlew bootRun
This will start your application boostrapped by Spring.
Origin a.k.a you can make your own https://start.spring.io/
To understand more about gradle and how your application is built see (build.gradle)
Spring Boot is a powerful way to start any project and follows convention over configuration. http://projects.spring.io/spring-boot/
Always check official site before doing internet adventures. https://docs.angularjs.org/api/ng/service/$http#post
It is easy to make not ugly things on time with this.