HashMap, LinkedHashMap and TreeMap in Java

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Hi Guys, I have always been asked to share the code which I use in my video. Answering people’s questions is great, and the feeling you get when you solve a problem always felt good. The only problem I have is making tutorials is a little bit time-consuming. It requires planning the subjects that need to be covered, recording the tutorial, editing the video, rendering it and finally uploading it on YouTube. So I need your help in Collecting All the codes in one place. I made a website for sharing my code and other programming stuff. But I alone can not do this. So Ask you guys to become a contributor to this site. Just Share the code Which you learn by watching Aptech Programming or You can simply share your Aptech Programming with others.