Discover SvenWoltmann/hexagonal-architecture-java Open Source project

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SvenWoltmann

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This repository contains a sample Java REST application implemented according to hexagonal architecture.

color-thief-java

Grabs the dominant color or a representative color palette from an image. A very fast Java port of Lokesh Dhakar's JavaScript version.

Java

231

binary-tree

Source Code for HappyCoders.eu article series on tree data structures (binary tree, binary search tree, AVL tree, red-black tree).

Java

pathfinding

Source code for the HappyCoders.eu articles on pathfinding and shortest path algorithms (Dijkstra, A*, Bellman-Ford, Floyd-Warshall).

Java

sorting-algorithms-ultimate-guide

Sorting algorithm source codes + ultimate test to compare the performance of all algorithms. For my HappyCoders.eu article.

Java

o-notation-and-time-complexity

Code examples demonstrating the complexity classes O(1), O(log n), O(n), O(n log n), O(n²).

Java

structured-concurrency

Demo code showing how to use Java's StructuredTaskScope

Java

advent-of-code-2022

Advent of Code 2022 – Object-Oriented Solutions in Java: https://www.happycoders.eu/algorithms/advent-of-code-2022/

Java

filechannel-bytebuffer-memory-mapped-io-locks

Demos for writing and reading files with FileChannel and ByteArray. Tests for write speed with RandomAccessFile, FileChannel, heap buffer, native buffer, memory-mapped buffer, and FileOutputStream.

Java

virtual-threads

Demo code showing how to use Java's virtual threads.

Java

internet-address-resolution-spi-jep-418-demo

A rudimentary demonstration on how to use the Internet-Address Resolution SPI defined in JEP 418 introduced in Java 18. Article: https://www.happycoders.eu/java/java-18-features/

Java

java-collections-guide

Java Queue, Deque, Stack and other collections - Ultimate Guide on HappyCoders.eu.

Java

binary-search

Binary search implementation in Java (recursive and iterative). Comparison with linear search. Runtime test of binary and linear search.

Java

virtual-threads-spring

Spring demo application to compare controllers using CompletableFuture vs. virtual threads.

Java

bytebuffer-demo

This demo shows how a ByteBuffer and its flip() and compact() methods work.

Java

advent-of-code-2015

Advent of Code 2015 – Object-Oriented Solutions in Java: https://www.happycoders.eu/algorithms/advent-of-code-2015/

Java

application-cds-demo

A minimal application for demostrating application class-data sharing (AppCDS).

Java

ffm-api-demo

Demonstration of Java's Foreign Function & Memory API

Java

project-a

Source code for the HappyCoders.eu article about Git Monorepos.

Java

files-structured-data

Source code for my HappyCoders.eu article about writing structured data with DataOutputStream, DataInputStream, ObjectOutputStream and ObjectInputStream.

Java

scoped-values

Demo code showing how to use Java's scoped values

Java

int-to-string-benchmarks

JMH benchmark tests to find out what is the fastest way to convert an int into a String in Java.

Java

coding-tasks-cd27a20

pattern-matching-for-switch

Pattern Matching for Switch Examples

Java

ultimate-guide-queue-deque-stack

Java Queue, Deque, Stack - Ultimate Guide on HappyCoders.eu

Java

java-kata

Maven project for Java Katas containing only a class, a test class, and dependencies to JUnit, AssertJ, and Mockito

Java

sorting-in-java

Demo code for HappyCoders.eu tutorial about sorting primitives and objects with Java.

Java

project-b

Source code for the HappyCoders.eu article about Git Monorepos.

Java

biased-locking

A JMH benchmark demostrating the effects of disabled biased locking in Java 15.

Java

jenkins-tutorial-demo

Code for HappyCoders.eu Jenkins tutorial explaining the installation and major features of Jenkins.

Groovy

happycoders-tutorial-server-setup

Source code for HappyCoders.eu Ansible tutorial.

HTML

java-structured-concurrency-demo

Demo code for the HappyCoders.eu article "Structured Concurrency with Java".

Java

string-to-int-benchmarks

JMH benchmark tests to measure the speed of various methods to convert Strings to int / Integer in Java.

Java

string-substring-demo

A demonstration of the String.substring() method and its evolution from Java 1.2 to today.

Java

sparse-checkout-demo

Source code for the HappyCoders.eu article about Git Monorepos.

Java

java-random-demo

Java random number generation demos. Article on HappyCoders.eu.

Java

comparator-comparable-compareto

Source code for my HappyCoders.eu article about comparing objects in Java using Comparable, Comparator, compareTo().

Java

mastering-data-structures-in-java

Quellcode zum Online-Kurs „Mastering Data Structures in Java“

Java

deep-reflection

How can Java Reflection be used to change the values of Integers and Strings at runtime?

Java

SvenWoltmann/hexagonal-architecture-java

SvenWoltmann

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