Seasoned Java and mobile developer with years of experience, specializing in mini‑programs, public accounts, and full‑stack front‑end development. In the AI era, I continuously learn to broaden my knowledge and evolve. I revived a public account I started a decade ago during a dessert‑startup venture, using code as a vessel and knowledge as a companion. I share personal projects, technical articles, programming tips, and growth insights—let’s improve together and set sail.
The article explains how the Abstract Factory pattern creates whole families of related objects—contrasting it with the Factory Method—illustrates practical scenarios such as phone accessories, UI themes, and payment suites, provides step‑by‑step Java code, lists common use cases, and discusses its limitations.
This article explains the Factory Method design pattern, illustrates its core principle of separating object creation from business logic, presents everyday analogies, and provides a complete Java implementation with abstract product, concrete products, abstract factory, concrete factories, and a test driver.
The article explains the Singleton pattern—ensuring a class has only one global instance—to save resources and avoid conflicts, illustrates two Java implementations (eager and lazy), and lists typical scenarios such as logging utilities, connection pools, global configuration, and exclusive resources.
This article presents a comprehensive, mobile‑friendly catalog of 23 classic design patterns, organized into Creational, Structural, and Behavioral groups, offering clear names and categories that developers can copy and use as a quick reference for learning and applying design patterns.
This article explains how to prioritize UniApp's built‑in APIs (uni.chooseMedia and uni.scanCode) for media selection, photo capture, video recording, and QR/barcode scanning, provides copy‑paste‑ready code snippets, permission configurations, fallback native plugins, installation steps, and common pitfalls.
This guide walks through the step‑by‑step Git commands needed to ensure your local repository is up‑to‑date, create a new dev branch from the main/master branch, push it to the remote, set the upstream tracking, and verify the result in common development scenarios.
This guide walks through a zero‑conflict workflow for merging a feature branch into the dev branch, covering local finalization, pulling the latest dev, merging locally, pushing the feature branch, and creating a GitHub pull request with the correct base and compare settings.
This guide walks you through opening the conflicted file, removing Git conflict markers, choosing between keeping the local version or the remote version, and finalizing the fix with three Git commands, ensuring the error is eliminated.
Many Git beginners rely on git pull, leading to unexpected merge conflicts and overwritten local changes, while most don’t understand that git fetch only downloads updates without merging; this article explains the core distinction, provides a clear analogy, and offers a safe step‑by‑step workflow.
The article explains why having both a named export and a default export for getToken in a JavaScript/TypeScript module is not a conflict, detailing their distinct syntax, import styles, appropriate use cases, and providing complete code examples for each approach.
