1. Install java
https://www.theserverside.com/blog/Coffee-Talk-Java-News-Stories-and-Opinions/How-to-install-Java-21

2.Configure Java
Control panel->system & security->system->advanced system settings->environmental variables
Lisada PATH muutujale : C:\Program Files\Java\jdk-21.0.2\bin
Lisada JAVA_HOME  väärtuseks  C:\Program Files\Java\jdk-21.0.2  
(kui JAVA_HOME muutujat pole siis lisada see ülemisse aknasse : User variables..)
Test java - in command window type:  java -version

3.	Download, install spring boot
https://docs.spring.io/spring-boot/docs/1.0.0.RC5/reference/html/getting-started-installing-spring-boot.html
      java version   // mus return 1.8 or higher
a)	Install apache maven  
Juhend:
https://mkyong.com/maven/how-to-install-maven-in-windows/#:~:text=mvn%20%2Dversion%20'mvn'%20is,to%20the%20PATH%20system%20variable.&text=Answer%3A%20Refer%20to%20Step%202,JAVA_HOME%20system%20variable%20is%20configured
check : mvn -v
b)	Install Gradle
https://www.tutorialspoint.com/gradle/gradle_installation.htm
https://gradle.org/install/
check gradle -v
c)	Install manually spring boot CLI
https://docs.spring.io/spring-boot/docs/current/reference/html/getting-started.html
Check: spring version

d)	Install ItelliJ
https://www.jetbrains.com/idea/download/#section=windows


7. Simple app:   https://www.jetbrains.com/help/idea/your-first-spring-application.html#create-new-spring-boot-project

8. Java CRUD:  In lecture 2024 used this sample
https://www.javaguides.net/2021/10/spring-boot-crud-rest-api-project-using-IntelliJ-IDEA.html 

some similar samples:
9. Spring boot crud operations: initializr+IntelliJ
https://deeppatel23.medium.com/crud-operations-in-spring-boot-and-mysql-rest-apis-9ca0c15bdc73

10. CRUD operations, H2 DB. 
https://www.geeksforgeeks.org/spring-boot-crud-operations/