Java guide for learning Concepts from core Java

Java guide for learning
Concepts from core Java

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  OOPS concepts (Data Abstraction, Encapsulation, Inheritance, Polymorphism)
  
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  Basic Java constructs like loops and data types, arrays
  
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  String handling
  
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  Collection framework
  
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  Multithreading
  
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  Exception handling
  
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  Generics
  
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  Synchronisation
  
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  Serialisation & De-serialisation
  
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  Concurrent collection
  

Spring boot

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  Rest api
  
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  Jpa(method query,relation)
  
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  File upload
  
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  Schedule
  
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  Web service
  
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  Security(Authentication, Authorization,JWT, Oauth2 )
  
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  Web sockets
  
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  Webflux
  

MicroService

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  OpenFeign
  
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  Cloud config
  
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  Spring cloud gateway
  
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  Hystrix
  
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  Eureka
  

Database

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  Postgres
  
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  SQL
  
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  Joins
  
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  functions
  

Popular Frameworks:

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  Spring (MVC, Core, JDBC, ORM, AOP)
  
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  Hibernate ORM framework
  
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  Struts
  
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  JSF
  
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  Web Services (SOAP & REST)
  

Jhipster
Other:

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  Design patterns and design questions related to your projects.