Programming: When EXACTLY to use an Abstract Class? Java & Kotlin Interfaces vs Abstract Classes

A viewer asked a question about why I preferred to use an Abstract Class over an Interface in an older video on the Open/Closed Principle, and I thought I would use this opportunity to explain exactly why I think yuo should use an Abstract Class over an Interface. Although the original video was about a Java example, you can apply this same principle to Kotlin. Just be aware that Kotlin also has Extension Functions, which are often a great substitute for Abstract Classes! Follow the wiseAss Community: https://www.instagram.com/wiseassbrand/ https://www.facebook.com/wiseassblog/ https://twitter.com/wiseass301 http://wiseassblog.com/ https://www.linkedin.com/in/ryan-kay-... Support wiseAss here: https://www.paypal.me/ryanmkay