What is a Marker Interface? Purpose of Marker Interface & Custom Marker Interface with Example.

In this video, I have explained Marker Interface and the purpose behind this empty interface with an example of a custom marker interface.

Link to videos I have posted in past:
1. How to find the second largest integer number from a randomly given integer array?
   • How to find the second largest intege...  
2. How to create and compare string objects in Java, the role of GC in SCP:    • How to create and compare string obje...  
3. Validate the sequence of brackets - every opening bracket must have a corresponding closing bracket.
   • Java | Validate brackets sequence - e...  
4. Notepad++ for every developer's companion - Style Tokens and Bookmarks. (log analysis)
   • Notepad++ every developer's companion...  
5. Updated: how to find the longest substring made of consecutive characters with explanation //aabbbc
   • Updated: find the longest substring m...  


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