Java – Page 311 – Sharp: NCLEX, Java & Python

Java: Synchronized and Locks

What can cause performance issues with 'synchronized'?

How would you explain a tradeoff when using Collections.synchronizedMap in an interview?

What error can occur with a HashMap under concurrent modification?

Why is ConcurrentHashMap preferable in high-concurrency scenarios?

Can ConcurrentHashMap handle null keys or values?

How does lock striping reduce contention in ConcurrentHashMap?

What happens if a key is modified during iteration in ConcurrentHashMap?

Describe the performance impact of lock striping?

What role does 'synchronized' play in Java concurrency?

What role does.thenApply() play in CompletableFuture chains?