iluwatar

    iluwatar/java-design-patterns

    Design patterns implemented in Java

    94.9K stars
    27.4K forks
    3.7K GitHub watchers
    Updated Nov 9, 2026
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    Where it stands

    Rank, growth pace and release cadence relative to everything GStars tracks.

    The project lists 409 contributors on GitHub.

    Use Cases & Benefits

    • Showcases implementations of classic design patterns in Java with well-commented source code and tutorials.
    • Provides battle-tested, proven design pattern solutions that improve code readability and prevent common design issues.
    • Use for learning and applying object-oriented design principles through practical Java pattern examples.
    • Use for accelerating Java application development by reusing standardized design pattern templates.
    • Use for educating developers and architects on software design best practices with clear, categorized pattern demonstrations.

    Should you depend on it?

    License terms, project hygiene and risks, from GitHub metadata and GStars' snapshots.

    License

    Other

    GitHub could not identify this license; read the LICENSE file before depending on it.

    Community files

    • README: present
    • Contributing guide: present

    Watch-outs

    • License not identified by GitHub; read the LICENSE file before depending on it.
    • No GitHub releases; pin a commit or tag instead of a release.

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    From the README

    Read in different language : zh, ko, fr, tr, ar, es, pt, id, ru, de, ja, vi, bn, np, it, da

    Design patterns are the best, formalized practices a programmer can use to solve common problems when designing an application or system.

    Design patterns can speed up the development process by providing tested, proven development paradigms.

    Reusing design patterns helps prevent subtle issues that cause major problems, and it also improves code readability for coders and architects who are familiar with the patterns.

    This site showcases Java Design Patterns. The solutions have been developed by experienced programmers and architects from the open-source community. The patterns can be browsed by their high-level descriptions or by looking at their source code. The source code examples are well commented and can be thought of as programming tutorials on how to implement a specific pattern. We use the most popular battle-proven open-source Java technologies.

    Excerpt from the iluwatar/java-design-patterns README on GitHub (NOASSERTION license). © its authors.Read the full README on GitHub

    Daily snapshots

    Stars gained per day, and how forks and open issues moved, from GStars' daily snapshots

    Forks

    27.4K-50

    Open issues

    146-10

    Compared with peers in Education

    Fastest-growing repositories GStars tracks in this cohort for the week of Nov 8, by 7-day star growth

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    Category median46.9K+59775—

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