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

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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?
3. Validate the sequence of brackets - every opening bracket must have a corresponding closing bracket.
4. Notepad++ for every developer's companion - Style Tokens and Bookmarks. (log analysis)
5. Updated: how to find the longest substring made of consecutive characters with explanation //aabbbc


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