javap -c QuestBookClass.class – look for obfuscated or suspicious calls (e.g., Runtime.exec , Cipher , Socket ).
For your own safety, always prefer well-known repositories and verify JARs before running them. If you remember the context where you saw this keyword, revisit that source carefully – it may have been a scam or an old, broken link. questbook31expnet2112jar link
: In modern computing, a "link" or hyperlink refers to a reference in a digital document that a user can follow or that is followed automatically. javap -c QuestBookClass
: On Windows, you can use the Microsoft Safety Scanner to ensure no malicious code is embedded within the archive. How to Use .jar Links Socket ). For your own safety