Fast-moving series of tutorials on Java programming using Java 8. From popular author & developer Marty Hall. Source code, exercises, & exercise solutions included.

Problem Statement Even the most basic problems become interesting when you dig deep enough. Today, I would like to do a deep dive into measuring time in Java. We will start with the very basics of the Java API and gradually move lower in our stack: throug... (more…)

Mon Feb 17 2020... (more…)

The challenge Assume "#" is like a backspace in string. This means that string "a#bc#d" actually is "bd" Your task is to process a string with "#" symbols. Examples Test cases The solution in Java Option 1: Option 2 (using regex): Option 3 (using substrin... (more…)

Java concurrency basics of threads. Creating Threads, Stopping Threads, Cancelling Threads, ThreadLocal variable, Thread Groups, Thread Types, Daemon Thread... (more…)