prafful / springboot_march2020 Goto Github PK

.exe .rpm

static html css

dynamic c or c++ -> cgi-bin

applets -> java run in browser!

2006 - 1st iphone mobile phone

less ram low spec device!

2007 1st android phone! 2007 to 2010 -> google search from mobile devices! 2010 Erci schmidt -> Mobile First!

lots of frameworks!

JSON Standard! Java Console - JDK (.jar) Java Web - J2EE (.war) Spring Framework! -> Spring Core (Console based apps) and Spring MVC (Web Apps) -> Spring REST DI - dependency injection IoC - Inversion of control AOP - Aspect oriented programming!

Maintianable Scalable Readable

REST Api became standard!

Spring Boot! (Auto Configuration!)

Spring Cloud (Microservice)

Spring reactive!

java -jar 001springboot.jar --server.port=1234

2017

Application.java (Spring boot application entry point!) creates handle to the spring container!

Spring container is responsible for lifecycle of all beans!

it will look for components (all beans -> rest controllers, services, interfaces, dao classes, exception class, pojo classes, validation classes, utility classes!) in the same/child package as that of application.java

If beans are in seperate/sibling package, then path of package MUST be supplied to Application.java