cjdk
cjdk (for "cached JDK") is a Python package and command-line tool to download and run JDK (Java Development Kit) or JRE (Java Runtime Environment) distributions.
Previously used JDKs are kept in the user's cache directory, so that future invocations do not require a download.
What for
- Installing exact JDK versions for reproducible testing
- Working with multiple versions of JDKs
- Deploying tools that require Java
Using the command-line interface of cjdk, you can run Java programs using a
one-liner, without having to worry about whether the user has installed a new
enough Java runtime and set JAVA_HOME and PATH to appropriate values.
For example, the following command will run Checkstyle using Temurin JRE 17 (which will be downloaded if this is the first time it is requested):
cjdk --jdk=temurin-jre:11 exec java -jar checkstyle-10.3-all.jar -c style.xml MyApp.java
See the documentation for detailed usage.
cjdk was inspired by Coursier's
java command, and uses Coursier's
JDK index). Unlike Coursier, cjdk
does not require a Java runtime to bootstrap.
Installing
cjdk requires Python 3.10.
pip install cjdk
Documentation
Licensing
cjdk is distributed under the MIT license. Please see LICENSE.txt.
1 maintainer
Metadata
1 maintainer
Release files for cjdk 0.5.0
For a detailed explanation of source distributions (sdists) and built distributions (wheels), please see the package formats documentation.
Source distribution (sdist)
| File | Size | Uploaded | Provenance | Actions |
|---|---|---|---|---|
| cjdk-0.5.0.tar.gz | 144.4 kB | With provenance | Details for cjdk-0.5.0.tar.gz |
Built distribution (wheel)
| File | Interpreter | ABI | Platform | Actions Reset |
|---|---|---|---|---|
| cjdk-0.5.0-py3-none-any.whl | Python 3 | none | any | Details for cjdk-0.5.0-py3-none-any.whl |
Total release size: 171.8 kB
Release files / cjdk-0.5.0.tar.gz
| Download URL | cjdk-0.5.0.tar.gz |
|---|---|
| Size | 144.4 kB |
| Tags | Source |
|
SHA-256 checksum How to use checksums |
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Transparency logRelease files / cjdk-0.5.0-py3-none-any.whl
| Download URL | cjdk-0.5.0-py3-none-any.whl |
|---|---|
| Size | 27.4 kB |
| Tags | Python 3 |
|
SHA-256 checksum How to use checksums |
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Uploaded using Trusted Publishing? What is trusted publishing? |
Yes |
| Uploaded via |
twine/6.1.0 CPython/3.13.7
|
Provenance
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PyPI Publish Attestation
PyPI verified that this artifact, at this checksum, originated from the publisher listed below.
Signed by GitHub Actions, verified by PyPI on Jan 7, 2026.
Transparency logSecurity for cjdk 0.5.0
Provenance
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Attestation for cjdk-0.5.0.tar.gz
PyPI Publish Attestation
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Signed by GitHub Actions, verified by PyPI on Jan 7, 2026.
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