Blog
Software, system design and lessons from the road.
Java: A Journey into the Depths of the JVM
We open up every part of the JVM one by one, using everyday analogies: the class loader, memory areas, garbage collector, JIT, threads, JNI and the module system — all in plain language.
- · 39 min readJava
Java: What Is Java and How Does It Work?
Starting Java from scratch: what is Java for, who made it? How does a program run, what are binary and bytecode, which layers live inside the JVM, and how do JIT and the garbage collector work?
#java#jvm#bytecode#jit#programming#getting-started - · 18 min readProgramming Basics
Algorithms: Dictionaries
What is a dictionary and how do you reach a piece of information by its name (its key) instead of its position? Learn key–value mapping, adding, updating, lookup and traversal — no code.
#dictionary#key-value#algorithm#programming-basics#data-structures#getting-started - · 8 min readProgramming Basics
Algorithms: Final Steps
The finale of the Algorithms series: we gather everything we learned in nine posts (variable, conditional, loop, list, function, dictionary), combine it in one program, and point to the next step.
#algorithm#programming-basics#summary#problem-solving#getting-started - · 19 min readProgramming Basics
Algorithms: Functions
What is a function and how do you define a job once and call it by name again and again? Learn parameters, RETURN, the black box and local variables — no code.
#function#algorithm#programming-basics#abstraction#getting-started - · 30 min readProgramming Basics
Algorithms: Lists
What is a list and how does a computer store many values under one name? Learn indexes, walking a list with a loop, and the count-from-zero trap — no code.
#list#array#algorithm#programming-basics#data-structures#getting-started - · 19 min readProgramming Basics
Algorithms: Loops
What is a loop and how does a computer repeat the same work? Learn counter and conditional loops, a loop's three parts and the infinite-loop trap — no code.
#loop#algorithm#programming-basics#control-flow#getting-started - · 16 min readProgramming Basics
Algorithms: Conditionals
What is a conditional (IF-THEN) and how does a computer decide? Learn single, double & multi-branch conditions, AND/OR/NOT logic and nested decisions — no code.
#conditional#algorithm#programming-basics#control-flow#getting-started