New Java features introduced between Java 15–21 make expressing tagged unions and data classes much cleaner. This Q&A explains how to leverage them together.

Explains how inline/value types and unresolved generics reduce GC overhead and improve data throughput in JVM-based systems.

Examines when Java's maturity, threading, and static typing offer advantages over dynamic-language alternatives.

Analyzes scenarios where Java’s long-term reliability, performance, and static typing give it an edge in enterprise environments.

Analyzes Java’s strengths in high-throughput scalability, long-term maintenance, and static typing.

Analyzes scenarios where Java outperforms in scalability, maintainability, and system consistency.

Explores when Java’s reliability, performance, and ecosystem advantages outweigh the faster development cycles of newer technologies.

Examines scenarios where Java’s runtime stability, performance, and ecosystem make it a preferred choice.

Explores situations where Java’s performance, type-safety, and ecosystem advantages outweigh newer language approaches for backend systems.

Discusses scenarios where Java’s performance, scalability, and ecosystem strengths outweigh newer language trends.

Explores scenarios where Java’s stability, performance, and ecosystem make it a preferred backend option. ✅ Answer

Examines when Java is more suitable for backend architecture compared to newer paradigms like Node.js or Python.

Discusses scenarios where Java still provides the best solution for backend services in terms of performance, reliability, and enterprise readiness.

Explores scenarios where Java is the better backend choice—despite the rise of Node.js or Python.

Under load, my application occasionally halts without exceptions or errors. Stack traces show threads waiting for locks held by each other. How can I prevent or diagnose this?

I use a shared integer counter with count++ across threads. Even though I spawn many threads that increment it, the final value is consistently too low. Why?

When deserializing objects after class changes, I face InvalidClassException. Also, sensitive transient data appears lost unexpectedly. I’m not sure about version handling or safe deserialization practices.

I use ThreadLocal to store per-request data in a web application with a thread pool. Even after the request completes, memory usage grows continuously. Objects are never garbage collected. What’s causing the leak?

My app suddenly freezes during high concurrency. Stack traces show two threads each holding one lock and waiting for the other's lock. How do I resolve this?

I implemented a singleton using double-checked locking but occasionally end up with multiple instances or a partially constructed object. Why does this happen?