Code Kata collection for JVM Languages and Libraries.
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Updated
Jan 12, 2026 - Java
Code Kata collection for JVM Languages and Libraries.
An alternative to ScheduledThreadPoolExecutor proof against the clock drift problem
The "Fitness Tracker" is a simple Java program that helps you monitor and record your exercise activities, durations, and dates. Stay on top of your fitness goals with this simple, user-friendly tool.
REST API payment model example that exposes relevant data using Java 8 features and test pyramid concepts
Modern Java implementation of a now-defunct Internet Time standard from 1998
Comprehensive 42-day Java program covering core to advanced concepts with hands-on examples – perfect for beginners and developers refreshing their skills.
This project provides most of the core java.time classes by forking threetenbp.
Spring Java Time Demo
Simple MathGame logic, with sound effects and executable file launcher
The Humanist Iranian calendar whose year numbering begins 5000 years earlier than the Persian calendar (circa 4384 BC, the Chalcolithic Age), implemented in the "java.time" package
Console-based Alarm Clock application in Java that allows users to set an alarm time in HH:mm:ss format. The program uses Java Time API, multithreading, and Java Sound API to track time in real-time and play an alarm sound when the specified time is reached.
Workingday Temporal Adjusters.. Using java.time (jdk8)
A companion repository for showcasing inconsistency in JDK `DateTimeFormatter` parsing behavior. JDK issues are https://bit.ly/JDK-8257667 and https://bit.ly/JDK-8257647.
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