Tough Core Java questions that quietly reject most 2 year candidates
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IIn this video, I’m breaking down 13 tough Core Java interview questions that every 2-year Java developer must know.
These are not the basic OOP or JDK questions — these are the real filters interviewers use to catch weak fundamentals.
We’ll cover things like:
String Pool vs Heap
HashMap race conditions
Integer cache traps
Mutable keys breaking HashMap
Shallow copy vs deep copy
Java Memory Model
Thread vs Runnable
synchronized, GC, transient, and more
If you’re preparing for Java, Spring Boot, or Microservices interviews, this video will help you understand the exact concepts interviewers expect from a solid mid-level developer.
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