Java

• Core Java
  • Language Basics
  • OOPs concepts
  • Exception Handling
  • Collections Framework
  • Generics
  • Input-Output
  • Multi-threading/Concurrency
  • Functional Programming – lambda expressions and streams
• Java Design Patterns
• JUnit, Mockito, Maven, Git
• Advanced Java
  • JDBC
  • Servlets
• Spring
  • Spring Framework
  • Spring Boot
  • Spring Data JPA using Hibernate
• Java Web services

https://www.java-success.com/producer-and-consumer-java-multi-threading-code/

Methods to override in Java Object class