Java vs Python: A Shift in Perspective

Did you know Python is actually older than Java? Yes, read that again. Python’s clean, indentation-driven syntax makes it feel like a modern language, but its first public release was all the way back in 1991. Java, on the other hand, didn’t see its first public release until 1995. Modern isn’t always new, sometimes it’s the ideas that were just ahead of their time. #Java #Python

In Java, private means private. In Python, it means: “I trust you not to look.” I was exploring encapsulation and discovered something interesting. In Java, access is enforced. In Python, it’s… negotiated. A double underscore (__attr) doesn’t truly hide anything. It just renames it. Which means: You *can* still access it — if you know how. That realization changed how I think about class design. Java protects the code. Python trusts the developer. Two different philosophies. Which one do you prefer? 👇 Curious to hear your perspective #Python #Java #OOP #SoftwareEngineering #LearningInPublic

⚡ Why Java Still Wins in 2026 (Performance Reality) Is Python really “too slow” for modern systems? We’ve all heard: • Python is easier • Python has better libraries • Developer speed > machine speed That’s true… until you hit production scale. 💥 At scale: • Latency becomes visible • Infrastructure costs increase • Concurrency becomes a real bottleneck This is where Java still has a strong edge. 🧠 JVM optimizations (like JIT compilation) allow Java to handle high-load systems far more efficiently — sometimes dramatically so, depending on the workload. That said — Python is still the right choice in many scenarios (especially AI, data, and rapid prototyping). The real question isn’t “Which is better?” 👉 It’s “When should you use which?” I break this down in detail here: https://lnkd.in/dVjP3x4S Curious — what are you using in production today? #Java #Python #SoftwareEngineering #Backend #SystemDesign

After years of Java, I finally tried Python.  Honestly? I didn't expect to enjoy it this much. No semicolons. No curly braces. No type declarations. Just... clean, readable code that almost reads like English. As a Java developer, some things caught me off guard: → Returning multiple values without creating a class → List comprehensions replacing 5 lines with 1 → Decorators that actually execute code (unlike Java annotations) → Context managers that feel conversational I wrote about my first impressions — the good, the surprising, and where I still trust Java more. If you're a Java developer curious about Python, this one's for you. #Python #Java #SoftwareDevelopment #Programming #LearningInPublic

I used to hate Python. Coming from C++ and Java, it felt fragile, inconsistent, and way too forgiving. Indentation defines scope, types are optional, performance isn’t great… and don’t get me started on packaging. The interesting part is: most of those things are still true. In today’s video, I talk about why I still use Python anyway, and the bigger lesson behind it. At some point, you realize it’s not about finding the “best” language. It’s about understanding trade-offs and choosing the right tool for the problem you’re solving. If you want to grow as a developer, that shift in thinking matters much more than the language you use. 👉 Watch here: https://lnkd.in/eJtP_jHF. #python #softwareengineering #programming #developers #careergrowth

Ever wondered how memory is organized in Java vs Python? Both languages handle memory automatically, but their approaches are quite different: Java: Uses a well-structured JVM memory model: - Heap → stores objects - Stack → method calls & local variables - Metaspace → class metadata With generational garbage collection, Java is optimized for performance and scalability in large systems. Python: Takes a more dynamic approach: - Everything is an object stored in a private heap - Uses reference counting for immediate cleanup - Handles cycles with a separate garbage collector Python focuses on simplicity and developer convenience. Key takeaway: - Java = Structured & performance-driven - Python = Flexible & easy to manage Understanding these differences helps you write more efficient code and choose the right tool for the job. #Java #Python #Programming #SoftwareEngineering #TechConcepts #Learning

I used to hate Python. Coming from C++ and Java, it felt fragile, inconsistent, and way too forgiving. Indentation defines scope, types are optional, performance isn’t great… and don’t get me started on packaging. The interesting part is: most of those things are still true. In today’s video, I talk about why I still use Python anyway, and the bigger lesson behind it. At some point, you realize it’s not about finding the “best” language. It’s about understanding trade-offs and choosing the right tool for the problem you’re solving. If you want to grow as a developer, that shift in thinking matters much more than the language you use. 👉 Watch here: https://lnkd.in/eXAPr3wq. #python #softwareengineering #programming #developers #careergrowth

Hit 5⭐ in Java & Python on HackerRank. Key takeaways from the journey: • Improved problem-solving and logical thinking • Focused on writing clean and efficient code • Got hands-on with arrays, strings, and recursion • Learned the importance of time & space complexity • Practiced consistency and pattern recognition Next step: deeper DSA and applying these skills to real-world projects. #Java #Python #DSA #ProblemSolving #CodingJourney #HackerRank

I've clearly not been paying attention to Scala lately. Only found out yesterday that Scala 3 supports syntax that makes it that much easier for Python developers to pick up (curly braces now optional, amongst other things). If you're a Python dev, check it out: you get a much, much faster runtime (the JVM), and a rich ecosystem of libraries (all Java libraries are interoperable with Scala). https://lnkd.in/gsTf5m_B

As a long-time Java engineer, I continue to be impressed by how much Python has evolved. What once felt like a simple scripting language has grown into a remarkably capable ecosystem: C-backed libraries like NumPy, performance-oriented tooling in Rust, native coroutine support with async and await, and multiple concurrency models for very different workloads. One thing I find especially interesting is Python’s concurrency toolbox. Choosing the right model usually comes down to one question: What is your code actually waiting on? If your program is mostly waiting on the network, a database, or disk, you are likely dealing with an I/O-bound problem. In that case, asyncio can be a strong fit when the surrounding stack is async-native. If your program spends most of its time computing, parsing, or transforming data, you are likely dealing with a CPU-bound problem. In standard CPython, threads usually do not speed up pure Python CPU work because of the GIL. For that, multiprocessing is often the better fit. A few practical rules I keep in mind: • asyncio for high-concurrency I/O with async-native libraries • threads for blocking libraries or simpler concurrency • multiprocessing for CPU-heavy pure Python workloads • threads with native libraries when heavy work runs in C or Rust A good example is PyArrow and PyIceberg. PyArrow’s Parquet reader supports multi-threaded reads. That means you can get parallelism without rewriting everything around asyncio, because the heavy work happens in native code rather than Python bytecode. PyIceberg builds on this ecosystem. From the Python caller’s point of view, the workflow is still synchronous, while file access and data processing can benefit from native parallelism underneath. The key lesson for me: Not every high-performance I/O workflow in Python needs asyncio. If the underlying engine is native and already parallelizes efficiently, threads can be the right tool. If the stack is async-native, asyncio becomes much more compelling. A simple mental model: Async-native I/O → asyncio Native libraries parallelizing outside Python → threads CPU-heavy pure Python → multiprocessing Not sure → profile first That mindset is often more useful than memorizing any specific framework. #Python #Java #Concurrency #AsyncIO #Threading #Multiprocessing #Performance #SoftwareEngineering #DataEngineering