HashSet Stores Duplicates Here 🤯 | Java Collections Trap

🚨 Java Challenge #88

Every Java developer learns:

"HashSet does not allow duplicates."

But this code seems to break that rule 😳

So what's really happening behind the scenes?

👇 Choose before reading comments:

A. 0
B. 1
C. 2
D. Compilation Error

This challenge tests:
✅ HashSet Internals
✅ equals() vs hashCode()
✅ Object Identity
✅ Java Collections Framework
✅ Interview Concepts

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