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PMD (software): Plugins, Copy/Paste Detector (CPD) & Features

PMD is an open source static source code analyzer that reports on issues found within application code. PMD includes built-in rule sets and supports the ability to write custom rules. PMD does not report compilation errors, as it only can process well-formed source files. Rather, PMD is designed to detect inefficient code or bad programming habits, which…

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PMD (software) topic overview

The analysis highlights Plugins, Copy/Paste Detector (CPD) and Features as prominent areas in the source structure around PMD (software).

Related topics
38
Source areas
5
Connected nodes
43
Extracted relationships
8
Concept neighborhoods
18
Bridge connections
43

What this topic covers Research coverage

Source areas are shown by the number of related topics found in each part of the analysis. Use smaller areas too: they can reveal specialized angles and content gaps.

Plugins · 18 topics
Copy/Paste Detector (CPD) · 7 topics
Overview · 7 topics
Features · 4 topics
License · 2 topics

Smaller areas are not necessarily less important. They contain fewer connections in this analysis and can be useful for finding specialized angles or coverage gaps.

Key facts & relationships

High-confidence facts extracted from structured source data. Use them as anchors for further research.

License
BSD License, Apache License 2.0, GNU Lesser General Public License
Operating system
Windows, Linux, macOS
Release
4 November 2002
Repository
github.com/pmd/pmd
Stable release
7.19.0 / 28 November 2025
Type
Static program analysis tool

Explore all related topics Closing gaps

Browse the complete topic structure, not only the most central items. Less prominent entities and concepts can reveal missing angles, specialized context and useful research gaps. Each item opens a new analysis centered on that subject.

Overview

Features

License

Copy/Paste Detector (CPD)

Plugins

Advanced semantic analysis

Deeper signals for content research, entity SEO and topical coverage. The plain-language headings explain what each technical view is useful for.

How PMD (software) connects Entity context

The extracted context around PMD (software) shows recurring relationship patterns in the source. For example, PMD (software) → BSD License, Apache License 2.0, GNU Lesser General Public License Another extracted example is PMD (software) → Windows, Linux, macOS. Use these groups to spot repeated connection types before inspecting the individual relationships.

PMD (software)

Top relations

License · 1
PMD (software) → BSD License, Apache License 2.0, GNU Lesser General Public License
Operating system · 1
PMD (software) → Windows, Linux, macOS
Release · 1
PMD (software) → 4 November 2002
Repository · 1
PMD (software) → github.com/pmd/pmd
Stable release · 1
PMD (software) → 7.19.0 / 28 November 2025
Type · 1
PMD (software) → Static program analysis tool
Website · 1
PMD (software) → pmd.github.io
Written in · 1
PMD (software) → Java

Important terminology

Use these terms to understand the vocabulary surrounding the topic, not as a checklist for keyword stuffing.

Important terminology

pmd code cpd java source detector static written apache license files programming program detect maintainability including plugins github copy paste

PMD (software) relationships Subject–Predicate–Object triples

TTTA extracted 8 structured relationships around PMD (software). Examples in this analysis include PMD (software) → License → BSD License, Apache License 2.0, GNU Lesser General Public License and PMD (software) → Operating system → Windows, Linux, macOS. The table shows each extracted connection, where it came from and its confidence.

SubjectPredicateObjectConfidenceSrc
PMD (software)LicenseBSD License, Apache License 2.0, GNU Lesser General Public License1.00infobox
PMD (software)Operating systemWindows, Linux, macOS1.00infobox
PMD (software)Release4 November 20021.00infobox
PMD (software)Repositorygithub.com/pmd/pmd1.00infobox
PMD (software)Stable release7.19.0 / 28 November 20251.00infobox
PMD (software)TypeStatic program analysis tool1.00infobox
PMD (software)Websitepmd.github.io1.00infobox
PMD (software)Written inJava1.00infobox

Related concept clusters Concept neighborhoods

The concept neighborhoods around PMD (software) bring nearby vocabulary together. In this analysis, examples include Cpd, Code and Detector. Use the clusters to find adjacent concepts and terminology that may deserve separate research.

  • PMD (software)
    • Cpd
    • Code
    • Detector
    • Source
    • Copy
    • Detect
    • Github
    • Including
    • License
    • Maven
    • Paste
    • Plugins
  • pmd (software)
    • Cpd
    • Code
    • Detector
    • Source
    • Copy
    • Detect
    • Github
    • Including
    • License
    • Maven
    • Paste
    • Plugins
  • source code
    • Static
    • Pmd
    • Reports
    • Within
    • Java
    • Also
    • Analysis
    • Bugs
    • Copy
    • Cpd
    • Detect
    • Empty
  • apache velocity
    • License
    • Written
    • Java
    • Apex
    • Javascript
    • Plsql
    • Also
    • Analysis
    • Bugs
    • Copy
    • Detect
    • Empty
  • apache license
    • License
    • Written
    • Java
    • Also
    • Analysis
    • Apex
    • Bugs
    • Empty
    • Github
    • Javascript
    • Paste
    • Plsql
  • duplicated code
    • Pmd
    • Static
    • Java
    • Cpd
    • Analysis
    • Bugs
    • Copy
    • Detect
    • Maintainability
    • Paste
    • Plugins
    • Program
  • visual studio code
    • Pmd
    • Static
    • Java
    • Cpd
    • Analysis
    • Bugs
    • Copy
    • Detect
    • Maintainability
    • Paste
    • Plugins
    • Program
  • copy/paste detector (cpd)
    • Paste
    • Copy
    • Detector
    • Cpd
    • Github
    • Website
    • Pmd
    • Also
    • Analysis
    • Bugs
    • Detect
    • Empty

Connections between topic areas Semantic bridges

For PMD (software), one of the stronger structural bridges in this analysis connects PMD (software) with Plugins. Bridges highlight paths between different parts of the map and can reveal research angles that are easy to miss in a flat list.

Min side: 3
PMD (software) — Plugins · splits 25 ⟂ 19
PMD (software) — Overview · splits 36 ⟂ 8
PMD (software) — Copy/Paste Detector (CPD) · splits 36 ⟂ 8
PMD (software) — Features · splits 39 ⟂ 5
PMD (software) — License · splits 41 ⟂ 3

Map overview Semantic statistics

PMD (software)

Nodes44
Edges43
Triples8
Avg. degree1.95
Density0.045455
Components1

Source & methodology

TTTA analyzes the structure around PMD (software) to surface related topics, entities, relationships, concept neighborhoods and bridge connections. Use the map to explore areas such as Plugins, Copy/Paste Detector (CPD) & Features, including less central topics that may reveal useful research gaps. Automatically extracted connections are research leads rather than rewritten encyclopedia content.

Source: Wikipedia — PMD (software) · EN edition · Analysis: TopicsToTalkAbout

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