Search Results for "simple java code"
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Showing 503 open source projects for "simple java code"
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simple-java-maven-app
For an introductory tutorial on how to use Jenkins
simple-java-maven-app is a reference repository created for the Jenkins tutorial on building a Java application with Maven. It contains a minimal Java program that prints “Hello world!” and includes unit tests to validate functionality, with test results exported in JUnit XML format. The repository provides an example that demonstrates how to configure a Jenkins Pipeline for building and delivering applications. -
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Source Code Hunter
Source code analysis of Spring, MyBatis, Redis, Netty, and more
Source Code Hunter is an open source project by Doocs that focuses on analyzing and explaining the source code of widely used Java frameworks and libraries. It helps developers deepen their understanding of internal implementations, design patterns, and performance optimizations by walking through actual codebases such as Spring, MyBatis, Netty, Tomcat, and others. -
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DSA Bootcamp Java
This repository consists of the code samples, assignments, and notes
DSA Bootcamp Java is an open source educational repository created by Kunal Kushwaha to teach Data Structures and Algorithms (DSA) using Java. It is designed as a structured bootcamp, covering fundamental concepts to advanced problem-solving techniques. The project provides explanations, exercises, assignments, and practice problems, making it useful for both beginners and intermediate learners who want to strengthen their Java and algorithmic skills. The repository is organized into... -
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Claude How-To
A visual, example-driven guide to Claude Code
Claude How-To is a visual, example-driven guide for learning Claude Code. It covers basic concepts, memory, slash commands, hooks, skills, subagents, MCP configuration, plugins, and advanced agent workflows. The project is designed as a practical learning path rather than a simple list of notes. It includes copy-paste templates that users can apply directly to their own projects. The guide also uses diagrams and structured examples to explain not only how features work, but why they matter in a real development workflow. ... -
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LeetCode Book
Comprehensive study guide for coding interviews
LeetCode-Book is a comprehensive study guide for coding interviews that consolidates algorithm patterns, data-structure templates, and worked LeetCode solutions. It organizes problems by topic—arrays, linked lists, stacks/queues, trees/graphs, dynamic programming, greedy, backtracking, and math—so you can study systematically. Explanations are concise but intentional, highlighting why a pattern fits, how to reason about boundary cases, and the time/space trade-offs. Many entries include... -
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Re-learning Java Design Patterns
Design-pattern learning project based on "Relearning Java Design"
Re-learning Java Design Patterns is a Java design-pattern learning project based on the book Relearning Java Design Patterns. Instead of presenting design patterns as abstract theory, it teaches them through practical internet business scenarios. The repository includes examples drawn from transactions, marketing, flash-sale systems, middleware, source-code analysis, and other real development contexts. -
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CodeWorld
Educational computer programming environment using Haskell
CodeWorld is an educational programming environment that uses a Haskell-inspired language to teach computational thinking through graphics and interactive animation. The web-based IDE provides immediate visual feedback: students write code that draws shapes, composes pictures, and responds to events to build simple games and simulations. Its API emphasizes mathematics and geometry rather than low-level UI details, making it approachable for classrooms and self-learners. Projects run in the browser, leveraging a compiler pipeline that turns the high-level code into JavaScript so no installation is required. ... -
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LeetCode Animation
Demonstrate all the questions on LeetCode in the form of animation
LeetCodeAnimation is an educational open source project by MisterBooo that visually demonstrates algorithm problems from LeetCode through animations. The goal of the project is to help learners understand complex algorithmic concepts intuitively by showing step-by-step animated explanations instead of relying solely on static code or text. Each animation corresponds to a specific problem and illustrates how data structures and algorithms operate dynamically, making it easier to grasp their... -
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MDN Learning Area
GitHub repo for the MDN Learning Area
learning-area is the official GitHub repository for the MDN Web Docs Learning Area, a collection of educational resources designed to teach core web development technologies. It contains the code examples referenced throughout MDN’s tutorials and articles, covering topics such as HTML, CSS, JavaScript, and web APIs. Each directory in the repository mirrors the module structure of the MDN Learning Area, allowing learners to follow along easily as they read through corresponding lessons. The examples are written to be simple, instructive, and directly aligned with MDN’s documentation, making it an ideal hands-on companion for web development education. ... -
MongoDB Atlas runs apps anywhereMongoDB Atlas gives you the freedom to build and run modern applications anywhere—across AWS, Azure, and Google Cloud. With global availability in over 115 regions, Atlas lets you deploy close to your users, meet compliance needs, and scale with confidence across any geography.
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Mall Learning
Tutorial and sample-code repository
mall-learning is a tutorial and sample-code repository that explores an entire e-commerce system architecture from backend to frontend. The associated “mall” project (with tens of thousands of stars) is an open-source full-stack e-commerce platform built with Spring Boot, MyBatis, Elasticsearch, RabbitMQ, Redis, MongoDB, MySQL and containerized via Docker. The learning repository breaks down architecture, business modules (products, orders, marketing, members), deployment (Linux, Docker,... -
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DevOps for Beginners
Learn Docker, Kubernetes, Terraform, Ansible, Jenkins and Azure Devops
DevOps Master Class is a comprehensive educational repository that teaches the fundamentals of DevOps practices and tools through hands-on examples. It covers key technologies such as Docker, Kubernetes, Terraform, Ansible, Jenkins, and cloud platforms like AWS and Azure. The course is structured to guide beginners from zero experience to building and deploying real-world applications. It emphasizes practical learning through exercises involving containerization, orchestration, and... -
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Qualify
Claude code to help you do lead research and qualification
...Built with simplicity and extensibility in mind, the project includes REST APIs, database models, and a user interface that can be extended or embedded into existing internal systems. Because it prioritizes lean data structures and predictable code paths, developers can customize pipelines, fields, and behaviors to align with their unique business logic. -
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Interviews
Comprehensive computer science and interview preparation guide
Interviews is an open source repository designed as a comprehensive guide to preparing for technical interviews, with a strong focus on computer science fundamentals and algorithmic problem solving. Created by Kevin Naughton Jr., the project compiles detailed notes, explanations, and code implementations that cover core areas tested in software engineering interviews. The repository emphasizes topics such as data structures, algorithms, system design, operating systems, databases, and... -
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nanoGPT
The simplest, fastest repository for training/finetuning models
...While simple, it can still train non-trivial models on modern GPUs and generate coherent text. The project has become widely used in tutorials, courses, and experiments for people learning how transformers work under the hood. -
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JavaGuide-Interview
A study for technical interviews focused on Java
JavaGuide-Interview is a comprehensive study companion for technical interviews with a strong focus on the Java ecosystem. It organizes material across language fundamentals, collections, concurrency, JVM internals, and hot frameworks such as Spring and MyBatis. Beyond Java, it includes databases, computer networks, operating systems, distributed systems, and common algorithmic topics to mirror real interview scopes. The notes emphasize high-value concepts, pitfalls, and frequently asked questions, often pairing concise explanations with diagrams or sample code. ... -
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Bats-core
Bash automated testing system
...Bats makes use of Bash's errexit (set -e) option when running test cases. If every command in the test case exits with a 0 status code (success), the test passes. In this way, each line is an assertion of truth. The Bats source code repository is hosted on GitHub. There you can file bugs on the issue tracker or submit tested pull requests for review. -
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Python Core 50 Courses
Structured learning path that organizes Python fundamentals
...The curriculum starts with the basics—syntax, variables, data types, and control flow—then advances to functions, modules, object-oriented programming, and common standard-library utilities. Each lesson favors hands-on examples and short exercises so learners can immediately apply new concepts in code. Later sections typically touch on practical topics such as file I/O, error handling, regular expressions, and simple networking, giving learners a toolbox for everyday scripts and utilities. The material aims to be beginner-friendly while still building habits that matter in real projects, like writing readable functions and testing logic. ... -
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rustlings
Small exercises to get you used to reading and writing Rust code
...For every topic there is an additional README file with some resources to get you started on the topic. We really recommend that you have a look at them before you start. The task is simple. Most exercises contain an error that keeps them from compiling, and it's up to you to fix it! Some exercises are also run as tests, but rustlings handles them all the same. -
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Light Novel Library (Wenku8.com) A third-party public welfare app, a Material Design-styled light novel reader, with no ads, no earnings, and the smallest installation package on the market, which started in 2014. If you want to use search and favorites functions, please log in first. This app is completely open source. Started in 2014 with Material Design style, no ads, no profit, light novel reader with the smallest installation package on Google Play . At present, in addition to the API...
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ThingPulse ESP8266 Weather Station
ESP8266 Weather Station library supporting OpenWeatherMap
...If you are using the PlatformIO environment for building, choose one of the available IDE integration or the Atom-based IDE, install libraries 561, 562, and 563 with "platformio lib install", adapt the WeatherStationDemo.ino file to your needs. The simple class uses the header date and time to set the clock. NTP-based time class written by Fabrice Weinberg. We fixed many bugs and improved performance and changed the API a little bit. Either compare your code to the updated WeatherStationDemo or read through the upgrade guide. -
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os-tutorial
How to create an OS from scratch
os-tutorial is an open source educational project by cfenollosa that teaches the basics of building an operating system from scratch. The repository provides step-by-step lessons starting with bootloaders and moving through kernel development, interrupts, memory management, and system calls. Each tutorial is accompanied by clear explanations, code examples, and references to deepen understanding. The project uses x86 assembly and C to illustrate concepts, making it accessible to students and... -
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Java Tutorial
A Java Tutorial by examples
Learn Java by writing real and usefull small applications. This tutorial teach you not only the language; documentation, bug-fixing and simple version control are also faced. The tutorial is in italian language. -
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CSS Reference
Fee visual guide to the most popular CSS properties
...The reference highlights common pitfalls and “gotchas,” helping you avoid surprises when mixing layout modes like Flexbox and Grid or when dealing with overflow and positioning. It favors clarity and progressive learning, moving from simple cases to more nuanced behavior and interactions between properties. Because it is written with learners in mind, the explanations are short, visual, and paired with minimal code you can copy and adapt. It’s a useful companion for day-to-day front-end work, code reviews, or quick refreshers before tackling complex layouts. -
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Quran for Android
A Quran reading application for Android
Quran for Android is a simple, open source Quran application for Android devices. It is based on Madani and features Madani images, Qaloon images and Naskh images all used with permission. It also has translations, Tafsir and Arabic data from tanzil and King Saud University. This project offers plenty of great features, with many more under development. Current features include translations in many different languages (Arabic Tafseer, English Sahih International Translation, French,... -
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Scientific Visualization
An open access book on scientific visualization using python
The Scientific Visualization book is a freely available open-access textbook that introduces how to produce effective scientific visualizations using Python, focusing especially on leveraging the popular plotting library Matplotlib (and related tools). It goes beyond simple plotting tutorials and emphasizes design principles: how to choose colors, layout subplots, annotate graphs, and present data in a way that is both accurate and visually compelling. As such, it serves as a guide for...
