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

351. How would you optimize Java services for multi-region deployments?

352. What consistency problems emerge in globally distributed databases?

353. How do cross-region replication delays affect backend guarantees?

354. How would you design low-latency global APIs using Java?

355. How would you design resilient failover mechanisms for global JVM systems?

356. What disaster-recovery strategies are most effective for distributed Java platforms?

357. How do JVM systems behave during partial cloud-provider outages?

358. How would you architect graceful degradation during infrastructure failures?

359. How would you build highly extensible JVM plugin ecosystems?

360. How would you version plugin APIs safely across independently deployed services?