What is the Java Virtual Machine (JVM)?

The JVM is a runtime environment that executes Java bytecode and provides platform independence, memory management, and garbage collection for Java applications.

What is the difference between JDK and JRE?

The JDK includes tools for developing Java applications, while the JRE provides the runtime environment required to execute Java programs.

What are Java collections?

Java collections are data structures from the java.util package, such as List, Set, and Map, that provide methods for storing, accessing, and manipulating groups of objects.

Java Interview Questions

321. How would you debug intermittent latency spikes in Java systems?

322. What causes non-deterministic backend behavior in distributed JVM applications?

323. How do asynchronous race conditions emerge in distributed Java systems?

324. How would you prevent stale-state propagation across backend services?

325. What consistency problems occur during optimistic event processing?

326. How would you reconcile conflicting writes in distributed architectures?

327. How do JVM systems support eventual consistency guarantees?

328. How would you synchronize distributed state across globally deployed services?

329. How do queue-heavy workloads affect Java backend stability?

330. How would you optimize realtime JVM systems handling millions of updates?