Inheritence

• abstract class

  • abstract method

  • extending

  • difference with interface

    • https://www.quora.com/If-asked-on-a-coding-interview-What-is-the-primary-difference-between-an-interface-and-abstract-class-what-is-the-correct-answer

• super Class

• sub class

• super

• No multiple inheritence

• use of final

Issues

• https://dzone.com/articles/problems-with-inheritance-in-java