Why does Java get so much criticism despite being widely used?
I recently started learning Java as my first language for building substantial projects. Before that I tried Python, but found it too abstract and not very engaging. With…
JVM
How deeply should a software engineer understand the JVM, compilers, and concurrency?
I understand the basic story that Java source is compiled into bytecode and that the JVM eventually executes or JIT-compiles that bytecode into machine instructions. Beyond that, I…
What's the Deal with Java Valhalla? Should Non-Java Developers Care?
I just read an article about Java Valhalla and I'm curious about what it actually changes. I've heard claims like it's 3x faster and utilizes C++17 features, but…
Understanding JVM Startup Time and Its Impact on Java Programs
Hi folks, I've been running some tests on my Java program and I've noticed something odd with the output timing. The first time I run it, it takes…
How to Debug JVM Bytecode Without Debug Information: Tools and Strategies?
I'm currently working on a university project that involves debugging JVM bytecode from production applications. The catch is that I'm focusing on cases where the bytecode has been…
Looking for Deep-Dive Resources on Java and JVM Internals
Hey everyone! I'm on the hunt for blogs and resources that really dive deep into the technical details of Java and JVM internals. I'm not looking for basic…
Why Are Application Servers Losing Popularity?
I've noticed a trend where application servers seem to be falling out of favor, and I recently read about Jakarta 11 and Jakarta Data 1.0, which caught my…
Can Java Code from 10-15 Years Ago Still Run on Modern JVMs?
I'm curious if Java programs that were written 10 to 15 years ago can still run on newer Java Virtual Machines without needing any updates. Has Java maintained…
Understanding Pointer Compression and Its Impact on Heap Limits
I'm curious about how pointer compression works, especially in the context of Java. I've come across a couple of interesting methods to fit 64-bit pointers into 32-bit values.…