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The code has lost all its indentations making it harder to read and understand. Logically nested statements should be indented.

Do NOT use == or != to compare String objects. Use the equals()...

The problem is with the Scanner methods. Please read this:
https://www.geeksforgeeks.org/why-is-scanner-skipping-nextline-after-use-of-other-next-functions/

Please edit your post and wrap your...