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Important Topics

Important Topics Of Java

Core Java :(*imp)

1.Oops, Concept. *
2.Multi-Threading.
3.Exception Handling.*
4.Collection.*

 Advance Java:
1.Jsp.
2.Servlet.
3.Jdbc Connection Setup.

Frameworks:

Spring:

1.Spring Ioc.
2.Spring MVC.
3.Spring & Hibernate Integration file. (spring-servlet.xml)

Hibernate:

1. Hibernate XML file.(config. file).
2.Relationship.
3. Hibernate Annotations.
4. Hibernate  Class And Interface.

Spring Boot:

1.Spring Boot Starter Projects
2.Spring Boot Starter Parent
3.Auto Configuration


Most often questions asked in Java interviews are based on these concepts(in the approximately increasing order of difficulty):

  1. Polymorphism
  2. Dynamic Binding
  3. Abstraction
  4. Data hiding
  5. Inheritance
  6. Method overriding
  7. Exception Handling
  8. Database connection setup(JDBC/ODBC)
  9. Access modifiers
  10. Exception cascading
  11. Immutability
  12. Unit testing and integration testing
  13. Wrapper classes
  14. Object class
  15. Java libraries and packages
  16. Java util class
  17. Java collections
  18. Java generics
  19. Microservices
  20. Object-Oriented Design
  21. Design Patterns(Singleton, Factory, etc)
  22. Frameworks(Play framework, Spring boot, Apache Tomcat, Hibernate)
  23. Java Reflection

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