Installation

Weitere Installationsbefehle

macOS

Homebrewverifiziert · 100%

brew install fernflower

local Homebrew formula metadata

Linux

Fedora dnfverifiziert · 92%

sudo dnf install fernflower

Fedora Rawhide package metadata · fernflower · Quelle: dl.fedoraproject.org

Überblick

Paketzusammenfassung

Advanced decompiler for Java bytecode

Projektlinks

Befehle und Aliase

fernflower

Verlauf

Projektgeschichte und Nutzung

Fernflower is JetBrains' Java bytecode decompiler engine. Its README describes it as an analytical Java decompiler, bundled in IntelliJ IDEA for viewing Java source while debugging or navigating class files, and usable as a standalone command-line JAR.

Projektgeschichte

Fernflower predates its current GitHub repository history: the README credits the original development to Stiver and says JetBrains has maintained it since 2014. The GitHub repository itself was created in October 2014 and points to the IntelliJ Community repository as the release location.

The project became part of the wider IntelliJ Java tooling stack rather than a standalone decompiler-only product. Its repository README tells contributors to send patches through the IntelliJ Community project, and its issue tracker route is the IntelliJ IDEA `Java. Decompiler. Engine` subsystem.

Adoptionsgeschichte

Fernflower's main adoption channel is IntelliJ IDEA, where it is bundled for class-file navigation and debugging. Package-manager adoption gives command-line users a standalone `fernflower` executable or wrapper without needing to extract the engine from an IDE installation.

The README also notes that patches from ForgeFlower were merged and that a long-running mirror by Andrew McRae existed, which reflects Fernflower's role in the broader Java reverse-engineering and Minecraft-modding adjacent decompiler ecosystem.

Wie es verwendet wird

Standalone usage runs `java -jar fernflower.jar` with options, one or more class/JAR/ZIP sources, and an output destination. The documented options cover generic signatures, inner classes, synthetic members, lambda handling, identifier renaming, logging, line endings, indentation, and other decompiler behavior.

Inside IntelliJ IDEA, Fernflower is used implicitly when a developer opens or debugs against compiled Java classes without source attached. That dual IDE-and-CLI role is why it is useful both to Java developers and to package users who want scriptable decompilation.

Warum Paket-Nerds sich dafür interessieren

Fernflower matters in package culture because it packages a decompiler engine from a large IDE ecosystem into a small command-line tool. It also sits at an interesting boundary: official releases are tied to JetBrains' IntelliJ infrastructure, while downstream package managers expose it as a normal CLI.

For Java tooling maintainers, it is a notable example of an IDE component with standalone utility, Apache-licensed source, and ongoing relevance as Java bytecode features evolve.

Zeitleiste

2014: JetBrains begins maintaining Fernflower and the public GitHub repository is created.
2014 onward: Fernflower is maintained as part of the IntelliJ Java decompiler engine.
2026: GitHub repository metadata shows continuing updates.

Related projects

Fernflower is related to IntelliJ IDEA, the IntelliJ Community repository, ForgeFlower, and the wider family of Java bytecode decompilers used by developers and reverse engineers.

Quellen

Sicherheitslage

Noch keine Protected-Tool-Abdeckung gefunden

Für fernflower wurde kein passendes lokales Secret-Handling-Manifest gefunden. Nucleus-Paketmetadaten bleiben hier veröffentlicht, damit künftige Abdeckung eine stabile Paket-URL hat.

Installationsverhalten

In den Formelmetadaten ist kein Homebrew-Post-install-Hook erfasst.
Homebrew-Bottle-Metadaten sind für 1 Plattformziele verfügbar.
Installiert mit 1 Laufzeitabhängigkeiten.

Empfohlene Prüfung

Prüfe vor unbeaufsichtigter Agent-Nutzung, ob das Tool Klartext-Credentials liest, Remote-Zustand schreibt, Artefakte veröffentlicht oder Plugins ausführt.

Executables

Installierte Executables

Befehl	Art	Sichtbarkeit	Hinweis
`fernflower`	cli	globales Executable

Aktualität

Version und Aktualität

Diese Signale trennen das Alter der Seitengenerierung, Aktivität des Paketmanagers und Upstream-Release-Vergleich. Versionsrückstand wird nur gemeldet, wenn eine Evidenz-URL und vergleichbare Versionen vorhanden sind.

Seite generiert2026-07-25

Manager-Version262.8665.337

Manager aktualisiert2026-07-23

lokale DatenOK

Upstreamnot checked

neueste erkannte Versionnicht erkannt

https://github.com/JetBrains/fernflower

InfoNo cached GitHub release or tag data was available.https://github.com/JetBrains/fernflowernone Konfidenz

Installationsmetadaten

Paketmetadaten

Paketschlüssel	brew:fernflower
Version	262.8665.337
Paketmanager	Homebrew
Paketmanager-Seite	https://formulae.brew.sh/formula/fernflower
Homepage	https://github.com/JetBrains/fernflower
Repository	https://github.com/JetBrains/fernflower
Upstream-Dokumentation	https://github.com/JetBrains/fernflower#readme
Lizenz	Apache-2.0
Quellarchiv	https://www.jetbrains.com/intellij-repository/releases/com/jetbrains/intellij/java/java-decompiler-engine/262.8665.337/java-decompiler-engine-262.8665.337.jar
Zuletzt aktualisiert	2026-07-23T18:23:56Z
Pulse	updated
Abhängigkeiten	openjdk
Bottle	verfügbar (auf all)
Homebrew post-install	nicht definiert
Dienst	keiner deklariert

Registry-Fakten

Details aus der Quelldatenbank

Source Database	Homebrew formula API
Tap	homebrew/core
Full Name	fernflower
Version Scheme	0
Revision	0
Bottle Stable Root URL	https://ghcr.io/v2/homebrew/core
Deprecated	no
Disabled	no
Keg Only	no
URL Keys	stable

Source-Datenbank-Treffer

Andere Paketmanager-Einträge

Treffer stammen aus externen Paketmanager-Indizes und bleiben von lokalen Automic-Vault-Paketlinks getrennt.

dnf95%

fernflower 211.7442.40-17.fc44

JIdea's java decompiler

https://github.com/JetBrains/intellij-community/tree/master/plugins/java-decompiler/engine

sudo dnf install fernflower

License: Apache-2.0
Category: Unspecified
Architecture: noarch
Source Package: fernflower
2 Abhängigkeiten
2 stellt bereit
normalized package name match
Abgeglichen nach: Fernflower

Fedora Rawhide package metadata · dl.fedoraproject.org · Fedora Rawhide package metadata: fernflower from https://dl.fedoraproject.org/pub/fedora/linux/development/rawhide/Everything/x86_64/os/repodata/e5ca8ce900cd68f5419e1c39ae517343100b306336cbaeb70a3c153121d95094-primary.xml.zst

dnf95%

fernflower-javadoc 211.7442.40-17.fc44

fernflower API documentation

https://github.com/JetBrains/intellij-community/tree/master/plugins/java-decompiler/engine

sudo dnf install fernflower-javadoc

License: Apache-2.0
Category: Unspecified
Architecture: noarch
Source Package: fernflower
1 Abhängigkeiten
2 stellt bereit
normalized package name match
Abgeglichen nach: Fernflower

Fedora Rawhide package metadata · dl.fedoraproject.org · Fedora Rawhide package metadata: fernflower-javadoc from https://dl.fedoraproject.org/pub/fedora/linux/development/rawhide/Everything/x86_64/os/repodata/e5ca8ce900cd68f5419e1c39ae517343100b306336cbaeb70a3c153121d95094-primary.xml.zst

Paketgraph

Links stammen aus dem lokalen Paketbeziehungsgraph, Ergänzungen, Abhängigkeitskanten, Ecosystem-Matches und Paket-Hub-Mitgliedschaft.

Quellspur

Aus Repository-Daten generiert

Diese Seite wird von av-web aus dem privaten Paket-SQLite-Artefakt bereitgestellt, das scripts/generate-pkg-sqlite.py erstellt.

Combined YAML source

View the package source record on GitHub.

combined/fernflower.yml

Verwendete Quellen

Geiger risk classifier
Nucleus package database
av.db category and tag curation
cross-ecosystem install command graph
curated package history
external package-manager database matches
package relationship graph
package version freshness
package-page enrichment

fernflower mit Homebrew, dnf installieren