Wrong comments and scanner not closed in Java programs

[VoidVampire]

Is your feature request related to a problem? Please describe. I have noticed many java programs:

• have wrong comments used such as caesarcipher.java uses "" not // or /**/ which breaks code.
• scanner is not closed such as in hillcipher
• few programs uses // and not /**/ for multi line comments, which looks messy.

Describe the solution you'd like I want to fix these issue in all java programs because it either breaks the code or code doesn't look clean.

[Soumya6Tiwari]

@Kumar-laxmi sir kindly assign me this issue , I can fix these issues

[VoidVampire]

@Kumar-laxmi sorry I forgot to tag you, but can you assign me this issue under SSOC'23? I was the first one to post the issue. Thanks!

[sarmistha-02]

@Kumar-laxmi sir I can resolve the above mentioned issue. It would be great if you would kindly assign me this issue.

[github-actions[bot]]

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