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https://api.github.com/repos/checkstyle/checkstyle/releases/227361910","Warn: release artifact checkstyle-10.25.1 does not have provenance: https://api.github.com/repos/checkstyle/checkstyle/releases/226835977","Warn: release artifact checkstyle-10.25.0 does not have provenance: https://api.github.com/repos/checkstyle/checkstyle/releases/222223391"],"documentation":{"short":"Determines if the project cryptographically signs release artifacts.","url":"https://github.com/ossf/scorecard/blob/f6ed084d17c9236477efd66e5b258b9d4cc7b389/docs/checks.md#signed-releases"}},{"name":"Dangerous-Workflow","score":10,"reason":"no dangerous workflow patterns detected","details":null,"documentation":{"short":"Determines if the project's GitHub Action workflows avoid dangerous patterns.","url":"https://github.com/ossf/scorecard/blob/f6ed084d17c9236477efd66e5b258b9d4cc7b389/docs/checks.md#dangerous-workflow"}},{"name":"Token-Permissions","score":0,"reason":"detected GitHub workflow tokens with excessive permissions","details":["Warn: jobLevel 'contents' permission set to 'write': .github/workflows/release-update-github-page.yml:29","Warn: jobLevel 'contents' permission set to 'write': .github/workflows/release-update-xdoc-with-releasenotes.yml:28","Warn: jobLevel 'contents' permission set to 'write': .github/workflows/release.yml:24","Warn: jobLevel 'contents' permission set to 'write': .github/workflows/release.yml:32","Info: jobLevel 'contents' permission set to 'read': .github/workflows/release.yml:41","Warn: jobLevel 'contents' permission set to 'write': .github/workflows/release.yml:50","Warn: jobLevel 'contents' permission set to 'write': .github/workflows/release.yml:59","Warn: jobLevel 'contents' permission set to 'write': .github/workflows/release.yml:68","Warn: no topLevel permission defined: .github/workflows/actionlint.yml:1","Warn: topLevel 'contents' permission set to 'write': .github/workflows/bump-license-year.yml:13","Warn: topLevel 'contents' permission set to 'write': .github/workflows/bump-version-and-update-milestone.yml:13","Warn: no topLevel permission defined: .github/workflows/check-performance-regression.yml:1","Warn: no topLevel permission defined: .github/workflows/check-pr-description.yml:1","Warn: no topLevel permission defined: .github/workflows/checker-framework.yml:1","Info: topLevel 'actions' permission set to 'read': .github/workflows/codeql-analysis.yml:14","Warn: topLevel 'security-events' permission set to 'write': .github/workflows/codeql-analysis.yml:15","Info: topLevel 'contents' permission set to 'read': .github/workflows/codeql-analysis.yml:13","Info: topLevel 'contents' permission set to 'read': .github/workflows/diff-report.yml:27","Warn: no topLevel permission defined: .github/workflows/error-prone.yml:1","Warn: no topLevel permission defined: .github/workflows/google-java-format.yml:1","Warn: no topLevel permission defined: .github/workflows/no-error-trino.yml:1","Warn: no topLevel permission defined: .github/workflows/no-exception-workflow.yml:1","Warn: no topLevel permission defined: .github/workflows/no-old-refs.yml:1","Warn: no topLevel permission defined: .github/workflows/pitest.yml:1","Info: topLevel 'contents' permission set to 'read': .github/workflows/regression-report.yml:33","Warn: topLevel 'actions' permission set to 'write': .github/workflows/regression-report.yml:35","Warn: no topLevel permission defined: .github/workflows/release-copy-github-io-to-sourceforge.yml:1","Warn: no topLevel permission defined: .github/workflows/release-maven-perform.yml:1","Warn: topLevel 'contents' permission set to 'write': .github/workflows/release-maven-prepare.yml:20","Warn: topLevel 'contents' permission set to 'write': .github/workflows/release-new-milestone-and-issues-in-other-repos.yml:20","Warn: no topLevel permission defined: .github/workflows/release-publish-releasenotes-twitter.yml:1","Warn: no topLevel permission defined: .github/workflows/release-update-github-io.yml:1","Warn: no topLevel permission defined: .github/workflows/release-update-github-page.yml:1","Warn: no topLevel permission defined: .github/workflows/release-update-xdoc-with-releasenotes.yml:1","Warn: topLevel 'contents' permission set to 'write': .github/workflows/release-upload-all-jar.yml:20","Warn: no topLevel permission defined: .github/workflows/release.yml:1","Warn: no topLevel permission defined: .github/workflows/releasenotes-gen.yml:1","Info: topLevel 'contents' permission set to 'read': .github/workflows/remainder-bot.yml:25","Warn: no topLevel permission defined: .github/workflows/run-checkstyle-ast-print.yml:1","Warn: no topLevel permission defined: .github/workflows/run-checkstyle.yml:1","Warn: no topLevel permission defined: .github/workflows/run-link-check.yml:1","Warn: no topLevel permission defined: .github/workflows/shellcheck.yml:1","Info: topLevel 'contents' permission set to 'read': 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configuration detected: CodeQL","Warn: 29 commits out of 30 are checked with a SAST tool"],"documentation":{"short":"Determines if the project uses static code analysis.","url":"https://github.com/ossf/scorecard/blob/f6ed084d17c9236477efd66e5b258b9d4cc7b389/docs/checks.md#sast"}},{"name":"Pinned-Dependencies","score":0,"reason":"dependency not pinned by hash detected -- score normalized to 0","details":["Warn: GitHub-owned GitHubAction not pinned by hash: .github/workflows/actionlint.yml:23: update your workflow using https://app.stepsecurity.io/secureworkflow/checkstyle/checkstyle/actionlint.yml/master?enable=pin","Warn: third-party GitHubAction not pinned by hash: .github/workflows/actionlint.yml:26: update your workflow using https://app.stepsecurity.io/secureworkflow/checkstyle/checkstyle/actionlint.yml/master?enable=pin","Warn: GitHub-owned GitHubAction not pinned by hash: .github/workflows/bump-license-year.yml:27: update your workflow using https://app.stepsecurity.io/secureworkflow/checkstyle/checkstyle/bump-license-year.yml/master?enable=pin","Warn: GitHub-owned GitHubAction not pinned by hash: .github/workflows/bump-version-and-update-milestone.yml:32: update your workflow using https://app.stepsecurity.io/secureworkflow/checkstyle/checkstyle/bump-version-and-update-milestone.yml/master?enable=pin","Warn: GitHub-owned GitHubAction not pinned by hash: .github/workflows/bump-version-and-update-milestone.yml:35: update your workflow using https://app.stepsecurity.io/secureworkflow/checkstyle/checkstyle/bump-version-and-update-milestone.yml/master?enable=pin","Warn: GitHub-owned GitHubAction not pinned by hash: .github/workflows/check-performance-regression.yml:43: update your workflow using https://app.stepsecurity.io/secureworkflow/checkstyle/checkstyle/check-performance-regression.yml/master?enable=pin","Warn: GitHub-owned GitHubAction not pinned by hash: .github/workflows/check-performance-regression.yml:49: update your workflow using https://app.stepsecurity.io/secureworkflow/checkstyle/checkstyle/check-performance-regression.yml/master?enable=pin","Warn: GitHub-owned GitHubAction not pinned by hash: .github/workflows/check-performance-regression.yml:52: update your workflow using https://app.stepsecurity.io/secureworkflow/checkstyle/checkstyle/check-performance-regression.yml/master?enable=pin","Warn: GitHub-owned GitHubAction not pinned by hash: .github/workflows/check-performance-regression.yml:58: update your workflow using https://app.stepsecurity.io/secureworkflow/checkstyle/checkstyle/check-performance-regression.yml/master?enable=pin","Warn: GitHub-owned GitHubAction not pinned by hash: .github/workflows/check-pr-description.yml:18: update your workflow using https://app.stepsecurity.io/secureworkflow/checkstyle/checkstyle/check-pr-description.yml/master?enable=pin","Warn: GitHub-owned GitHubAction not pinned by hash: .github/workflows/checker-framework.yml:34: update your workflow using https://app.stepsecurity.io/secureworkflow/checkstyle/checkstyle/checker-framework.yml/master?enable=pin","Warn: GitHub-owned GitHubAction not pinned by hash: .github/workflows/checker-framework.yml:43: update your workflow using https://app.stepsecurity.io/secureworkflow/checkstyle/checkstyle/checker-framework.yml/master?enable=pin","Warn: GitHub-owned GitHubAction not pinned by hash: .github/workflows/checker-framework.yml:46: update your workflow using https://app.stepsecurity.io/secureworkflow/checkstyle/checkstyle/checker-framework.yml/master?enable=pin","Warn: GitHub-owned GitHubAction not pinned by hash: .github/workflows/checker-framework.yml:62: update your workflow using https://app.stepsecurity.io/secureworkflow/checkstyle/checkstyle/checker-framework.yml/master?enable=pin","Warn: GitHub-owned GitHubAction not pinned by hash: .github/workflows/codeql-analysis.yml:34: update your workflow using https://app.stepsecurity.io/secureworkflow/checkstyle/checkstyle/codeql-analysis.yml/master?enable=pin","Warn: GitHub-owned GitHubAction not pinned by hash: .github/workflows/codeql-analysis.yml:37: update your workflow using https://app.stepsecurity.io/secureworkflow/checkstyle/checkstyle/codeql-analysis.yml/master?enable=pin","Warn: GitHub-owned GitHubAction not pinned by hash: .github/workflows/codeql-analysis.yml:44: update your workflow using https://app.stepsecurity.io/secureworkflow/checkstyle/checkstyle/codeql-analysis.yml/master?enable=pin","Warn: GitHub-owned GitHubAction not pinned by hash: .github/workflows/codeql-analysis.yml:55: update your workflow using https://app.stepsecurity.io/secureworkflow/checkstyle/checkstyle/codeql-analysis.yml/master?enable=pin","Warn: GitHub-owned GitHubAction not pinned by hash: .github/workflows/codeql-analysis.yml:66: update your workflow using https://app.stepsecurity.io/secureworkflow/checkstyle/checkstyle/codeql-analysis.yml/master?enable=pin","Warn: GitHub-owned GitHubAction not pinned by hash: .github/workflows/diff-report.yml:211: update your workflow using https://app.stepsecurity.io/secureworkflow/checkstyle/checkstyle/diff-report.yml/master?enable=pin","Warn: third-party GitHubAction not pinned by hash: .github/workflows/diff-report.yml:245: update your workflow using https://app.stepsecurity.io/secureworkflow/checkstyle/checkstyle/diff-report.yml/master?enable=pin","Warn: third-party GitHubAction not pinned by hash: .github/workflows/diff-report.yml:50: update your workflow using https://app.stepsecurity.io/secureworkflow/checkstyle/checkstyle/diff-report.yml/master?enable=pin","Warn: GitHub-owned GitHubAction not pinned by hash: .github/workflows/diff-report.yml:62: update your workflow using https://app.stepsecurity.io/secureworkflow/checkstyle/checkstyle/diff-report.yml/master?enable=pin","Warn: GitHub-owned GitHubAction not pinned by hash: .github/workflows/diff-report.yml:110: update your workflow using https://app.stepsecurity.io/secureworkflow/checkstyle/checkstyle/diff-report.yml/master?enable=pin","Warn: GitHub-owned GitHubAction not pinned by hash: .github/workflows/diff-report.yml:135: update your workflow using https://app.stepsecurity.io/secureworkflow/checkstyle/checkstyle/diff-report.yml/master?enable=pin","Warn: GitHub-owned GitHubAction not pinned by hash: .github/workflows/diff-report.yml:141: update your workflow using https://app.stepsecurity.io/secureworkflow/checkstyle/checkstyle/diff-report.yml/master?enable=pin","Warn: third-party GitHubAction not pinned by hash: .github/workflows/diff-report.yml:153: update your workflow using https://app.stepsecurity.io/secureworkflow/checkstyle/checkstyle/diff-report.yml/master?enable=pin","Warn: GitHub-owned GitHubAction not pinned by hash: .github/workflows/error-prone.yml:20: update your workflow using https://app.stepsecurity.io/secureworkflow/checkstyle/checkstyle/error-prone.yml/master?enable=pin","Warn: GitHub-owned GitHubAction not pinned by hash: .github/workflows/error-prone.yml:34: update your workflow using https://app.stepsecurity.io/secureworkflow/checkstyle/checkstyle/error-prone.yml/master?enable=pin","Warn: GitHub-owned GitHubAction not pinned by hash: .github/workflows/error-prone.yml:37: update your workflow using https://app.stepsecurity.io/secureworkflow/checkstyle/checkstyle/error-prone.yml/master?enable=pin","Warn: GitHub-owned GitHubAction not pinned by hash: .github/workflows/google-java-format.yml:31: update your workflow using https://app.stepsecurity.io/secureworkflow/checkstyle/checkstyle/google-java-format.yml/master?enable=pin","Warn: GitHub-owned GitHubAction not pinned by hash: .github/workflows/google-java-format.yml:37: update your workflow using https://app.stepsecurity.io/secureworkflow/checkstyle/checkstyle/google-java-format.yml/master?enable=pin","Warn: third-party GitHubAction not pinned by hash: .github/workflows/google-java-format.yml:39: update your workflow using https://app.stepsecurity.io/secureworkflow/checkstyle/checkstyle/google-java-format.yml/master?enable=pin","Warn: GitHub-owned GitHubAction not pinned by hash: .github/workflows/no-error-trino.yml:19: update your workflow using https://app.stepsecurity.io/secureworkflow/checkstyle/checkstyle/no-error-trino.yml/master?enable=pin","Warn: GitHub-owned GitHubAction not pinned by hash: .github/workflows/no-error-trino.yml:21: update your workflow using https://app.stepsecurity.io/secureworkflow/checkstyle/checkstyle/no-error-trino.yml/master?enable=pin","Warn: GitHub-owned GitHubAction not pinned by hash: .github/workflows/no-exception-workflow.yml:21: update your workflow using https://app.stepsecurity.io/secureworkflow/checkstyle/checkstyle/no-exception-workflow.yml/master?enable=pin","Warn: GitHub-owned GitHubAction not pinned by hash: .github/workflows/no-exception-workflow.yml:30: update your workflow using https://app.stepsecurity.io/secureworkflow/checkstyle/checkstyle/no-exception-workflow.yml/master?enable=pin","Warn: GitHub-owned GitHubAction not pinned by hash: .github/workflows/no-exception-workflow.yml:39: update your workflow using https://app.stepsecurity.io/secureworkflow/checkstyle/checkstyle/no-exception-workflow.yml/master?enable=pin","Warn: GitHub-owned GitHubAction not pinned by hash: .github/workflows/no-exception-workflow.yml:48: update your workflow using https://app.stepsecurity.io/secureworkflow/checkstyle/checkstyle/no-exception-workflow.yml/master?enable=pin","Warn: GitHub-owned GitHubAction not pinned by hash: .github/workflows/no-exception-workflow.yml:57: update your workflow using https://app.stepsecurity.io/secureworkflow/checkstyle/checkstyle/no-exception-workflow.yml/master?enable=pin","Warn: GitHub-owned GitHubAction not pinned by hash: .github/workflows/no-exception-workflow.yml:66: update your workflow using https://app.stepsecurity.io/secureworkflow/checkstyle/checkstyle/no-exception-workflow.yml/master?enable=pin","Warn: GitHub-owned GitHubAction not pinned by hash: .github/workflows/no-exception-workflow.yml:75: update your workflow using https://app.stepsecurity.io/secureworkflow/checkstyle/checkstyle/no-exception-workflow.yml/master?enable=pin","Warn: GitHub-owned GitHubAction not pinned by hash: .github/workflows/no-exception-workflow.yml:84: update your workflow using https://app.stepsecurity.io/secureworkflow/checkstyle/checkstyle/no-exception-workflow.yml/master?enable=pin","Warn: GitHub-owned GitHubAction not pinned by hash: .github/workflows/no-old-refs.yml:27: update your workflow using https://app.stepsecurity.io/secureworkflow/checkstyle/checkstyle/no-old-refs.yml/master?enable=pin","Warn: third-party GitHubAction not pinned by hash: .github/workflows/no-old-refs.yml:31: update your workflow using https://app.stepsecurity.io/secureworkflow/checkstyle/checkstyle/no-old-refs.yml/master?enable=pin","Warn: GitHub-owned GitHubAction not pinned by hash: .github/workflows/pitest.yml:54: update your workflow using https://app.stepsecurity.io/secureworkflow/checkstyle/checkstyle/pitest.yml/master?enable=pin","Warn: GitHub-owned GitHubAction not pinned by hash: .github/workflows/pitest.yml:65: update your workflow using https://app.stepsecurity.io/secureworkflow/checkstyle/checkstyle/pitest.yml/master?enable=pin","Warn: GitHub-owned GitHubAction not pinned by hash: .github/workflows/pitest.yml:71: update your workflow using https://app.stepsecurity.io/secureworkflow/checkstyle/checkstyle/pitest.yml/master?enable=pin","Warn: GitHub-owned GitHubAction not pinned by hash: .github/workflows/pitest.yml:89: update your workflow using https://app.stepsecurity.io/secureworkflow/checkstyle/checkstyle/pitest.yml/master?enable=pin","Warn: GitHub-owned GitHubAction not pinned by hash: .github/workflows/regression-report.yml:689: update your workflow using https://app.stepsecurity.io/secureworkflow/checkstyle/checkstyle/regression-report.yml/master?enable=pin","Warn: third-party GitHubAction not pinned by hash: .github/workflows/regression-report.yml:793: update your workflow using https://app.stepsecurity.io/secureworkflow/checkstyle/checkstyle/regression-report.yml/master?enable=pin","Warn: GitHub-owned GitHubAction not pinned by hash: .github/workflows/regression-report.yml:100: update your workflow using https://app.stepsecurity.io/secureworkflow/checkstyle/checkstyle/regression-report.yml/master?enable=pin","Warn: GitHub-owned GitHubAction not pinned by hash: .github/workflows/regression-report.yml:106: update your workflow using https://app.stepsecurity.io/secureworkflow/checkstyle/checkstyle/regression-report.yml/master?enable=pin","Warn: GitHub-owned GitHubAction not pinned by hash: .github/workflows/regression-report.yml:122: update your workflow using https://app.stepsecurity.io/secureworkflow/checkstyle/checkstyle/regression-report.yml/master?enable=pin","Warn: GitHub-owned GitHubAction not pinned by hash: .github/workflows/regression-report.yml:192: update your workflow using https://app.stepsecurity.io/secureworkflow/checkstyle/checkstyle/regression-report.yml/master?enable=pin","Warn: GitHub-owned GitHubAction not pinned by hash: .github/workflows/regression-report.yml:454: update your workflow using https://app.stepsecurity.io/secureworkflow/checkstyle/checkstyle/regression-report.yml/master?enable=pin","Warn: GitHub-owned GitHubAction not pinned by hash: .github/workflows/regression-report.yml:461: update your workflow using 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GitHubAction not pinned by hash: .github/workflows/release-update-github-io.yml:46: update your workflow using https://app.stepsecurity.io/secureworkflow/checkstyle/checkstyle/release-update-github-io.yml/master?enable=pin","Warn: GitHub-owned GitHubAction not pinned by hash: .github/workflows/release-update-github-page.yml:32: update your workflow using https://app.stepsecurity.io/secureworkflow/checkstyle/checkstyle/release-update-github-page.yml/master?enable=pin","Warn: GitHub-owned GitHubAction not pinned by hash: .github/workflows/release-update-github-page.yml:35: update your workflow using https://app.stepsecurity.io/secureworkflow/checkstyle/checkstyle/release-update-github-page.yml/master?enable=pin","Warn: GitHub-owned GitHubAction not pinned by hash: .github/workflows/release-update-xdoc-with-releasenotes.yml:31: update your workflow using https://app.stepsecurity.io/secureworkflow/checkstyle/checkstyle/release-update-xdoc-with-releasenotes.yml/master?enable=pin","Warn: 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GitHubAction not pinned by hash: .github/workflows/site.yml:200: update your workflow using https://app.stepsecurity.io/secureworkflow/checkstyle/checkstyle/site.yml/master?enable=pin","Warn: downloadThenRun not pinned by hash: .ci/test-spelling-unknown-words.sh:28","Warn: downloadThenRun not pinned by hash: .ci/validation.sh:1137","Warn: downloadThenRun not pinned by hash: .github/workflows/error-prone.yml:27","Info:   0 out of  96 GitHub-owned GitHubAction dependencies pinned","Info:   0 out of  15 third-party GitHubAction dependencies pinned","Info:   0 out of   3 downloadThenRun dependencies pinned"],"documentation":{"short":"Determines if the project has declared and pinned the dependencies of its build process.","url":"https://github.com/ossf/scorecard/blob/f6ed084d17c9236477efd66e5b258b9d4cc7b389/docs/checks.md#pinned-dependencies"}},{"name":"Vulnerabilities","score":5,"reason":"5 existing vulnerabilities detected","details":["Warn: Project is vulnerable to: GHSA-j288-q9x7-2f5v","Warn: Project is vulnerable to: OSV-2024-278","Warn: Project is vulnerable to: OSV-2024-400","Warn: Project is vulnerable to: OSV-2024-641","Warn: Project is vulnerable to: OSV-2024-696"],"documentation":{"short":"Determines if the project has open, known unfixed vulnerabilities.","url":"https://github.com/ossf/scorecard/blob/f6ed084d17c9236477efd66e5b258b9d4cc7b389/docs/checks.md#vulnerabilities"}}]},"last_synced_at":"2025-08-17T14:15:47.614Z","repository_id":10359601,"created_at":"2025-08-17T14:15:47.614Z","updated_at":"2025-08-17T14:15:47.614Z"},"host":{"name":"GitHub","url":"https://github.com","kind":"github","repositories_count":286080680,"owners_count":28950279,"icon_url":"https://github.com/github.png","version":null,"created_at":"2022-05-30T11:31:42.601Z","updated_at":"2026-01-31T18:30:42.805Z","status":"ssl_error","status_checked_at":"2026-01-31T18:30:19.593Z","response_time":128,"last_error":"SSL_connect returned=1 errno=0 peeraddr=140.82.121.6:443 state=error: unexpected eof while reading","robots_txt_status":"success","robots_txt_updated_at":"2025-07-24T06:49:26.215Z","robots_txt_url":"https://github.com/robots.txt","online":false,"can_crawl_api":true,"host_url":"https://repos.ecosyste.ms/api/v1/hosts/GitHub","repositories_url":"https://repos.ecosyste.ms/api/v1/hosts/GitHub/repositories","repository_names_url":"https://repos.ecosyste.ms/api/v1/hosts/GitHub/repository_names","owners_url":"https://repos.ecosyste.ms/api/v1/hosts/GitHub/owners"}},"keywords":["code-quality","command-line-tool","hacktoberfest","java","static-analysis","static-code-analysis"],"created_at":"2024-07-31T09:00:55.571Z","updated_at":"2026-02-28T19:03:12.698Z","avatar_url":"https://github.com/checkstyle.png","language":"Java","readme":"# Checkstyle - Java Code Quality Tool\n\n![](https://raw.githubusercontent.com/checkstyle/resources/master/img/checkstyle-logos/checkstyle-logo-260x99.png)\n\n--------------------------\n\n*Checkstyle is a tool that ensures adherence to a code standard or a set of best practices.*\n\n[![][appveyor img]][appveyor]\n[![][circleci img]][circleci]\n[![][cirrusci img]][cirrusci]\n[![][coverage img]][coverage]\n[![][snyk img]][snyk]\n[![][semaphoreci img]][semaphoreci]\n[![][azure img]][azure]\n[![][error prone img]][error prone]\n[![][qodana img]][qodana]\n[![][pitest img]][pitest]\n[![][checker framework img]][checker framework]\n[![][dependabot img]][dependabot]\n[![][release notes/version img]][release notes/version]\n[![][closed issues img]][closed issues]\n[![][link check img]][link check]\n[![][milestone img]][milestone]\n\n[![][mavenbadge img]][mavenbadge]\n\nThe latest release version can be found at\n[GitHub releases](https://github.com/checkstyle/checkstyle/releases/)\nor at [Maven repo](https://repo1.maven.org/maven2/com/puppycrawl/tools/checkstyle/).\n\nDocumentation is available in HTML format, see https://checkstyle.org/checks.html .\n\n## Table of Contents\n\n- [Quick Start](#quick-start)\n- [Contributing](#contributing)\n- [Feedback and Support](#feedback-and-support)\n- [Javadoc](#javadoc)\n- [Sponsor Checkstyle](#sponsor-checkstyle)\n- [Licensing](#licensing)\n\n## Quick Start\n\n- Download our [Latest Release](https://github.com/checkstyle/checkstyle/releases/) from GitHub\n  or Add Checkstyle to your build from [Maven Central](https://mvnrepository.com/artifact/com.puppycrawl.tools/checkstyle).\n- Read our Documentation for [usage](https://checkstyle.org/cmdline.html)\n  and [configuration](https://checkstyle.org/config.html).\n\n```bash\n$ cat config.xml\n\u003c?xml version=\"1.0\"?\u003e\n\u003c!DOCTYPE module PUBLIC\n          \"-//Puppy Crawl//DTD Check Configuration 1.3//EN\"\n          \"https://checkstyle.org/dtds/configuration_1_3.dtd\"\u003e\n\u003cmodule name=\"Checker\"\u003e\n  \u003cmodule name=\"TreeWalker\"\u003e\n    \u003cmodule name=\"FallThrough\"/\u003e\n  \u003c/module\u003e\n\u003c/module\u003e\n\n$ cat Test.java\nclass Test {\n  public void foo() {\n    int i = 0;\n    while (i \u003e= 0) {\n      switch (i) {\n        case 1:\n        case 2:\n          i++;\n        case 3: // violation 'fall from previous branch of the switch'\n          i++;\n      }\n    }\n  }\n}\n\n$ java -jar checkstyle-10.18.1-all.jar -c config.xml Test.java\nStarting audit...\n[ERROR] Test.java:9:9: Fall through from previous branch of switch statement [FallThrough]\nAudit done.\nCheckstyle ends with 1 errors.\n```\n\n## Contributing\n\nThanks for your interest in contributing to CheckStyle! Please see the\n[Contribution Guidelines](https://github.com/checkstyle/checkstyle/blob/master/.github/CONTRIBUTING.md)\nfor information on how to contribute to the project. This includes creating issues, submitting pull\nrequests, and setting up your development environment.\n\n## Build Instructions\n\nPlease see the [CheckStyle Documentation](https://checkstyle.org/contributing.html#Build) for\ninformation on how to build the project.\n\n## Feedback and Support\n\n- Visit our [Discussions Page](https://github.com/checkstyle/checkstyle/discussions), where you\n  can ask questions and discuss the project with other users and contributors. This is our\n  preferred method of communication for topics\n  like usage and configuration questions, debugging, and other feedback.\n- [Stack Overflow](https://stackoverflow.com/questions/tagged/checkstyle) is another place to\n  ask questions about Checkstyle usage.\n- If you are interested in contributing to the project, you can join our\n  [Discord Contributors Chat](https://discord.com/channels/845645228467159061/1216455699488313554)\n  [with invite link](https://discord.gg/FsUsYC2ura).\n- Our [Google Groups Forum](https://groups.google.com/forum/?hl=en#!forum/checkstyle) is a\n  mailing list for discussion and support; however, we may be slow to respond there.\n\n## Javadoc\n\nTake a look at our [javadoc](https://checkstyle.org/apidocs/index.html) to see\nour API documentation.\n\n## Sponsor Checkstyle\n\nCheckstyle is an open-source project that is developed and maintained by volunteers. If you\nfind Checkstyle useful, please consider sponsoring the project. Your support helps us to\nmaintain and improve Checkstyle.\n\n- [Liberapay](https://liberapay.com/checkstyle/)\n- [OpenCollective](https://opencollective.com/checkstyle/)\n\n[![][backers.opencollective img]][backers.opencollective]\n\n[![][sponsors.opencollective img]][sponsors.opencollective]\n\n## Licensing\n\nCheckstyle is licensed under the [GNU LGPL v2.1 License](LICENSE).\nCheckstyle uses libraries:\n\n- [ANTLR](https://www.antlr.org/)\n- [Apache Commons](https://commons.apache.org/)\n- [Google Guava](https://github.com/google/guava/)\n- [Picocli](https://github.com/remkop/picocli/)\n\n## Development Tools Powered by\n\n[![JetBrains logo.][jetbrains img]][jetbrains]\n\n[![JProfiler logo.][jprofiler img]][jprofiler]\n\n[jetbrains]:https://jb.gg/OpenSource\n[jetbrains img]:https://resources.jetbrains.com/storage/products/company/brand/logos/jetbrains.svg\n\n[jprofiler]:https://www.ej-technologies.com/jprofiler\n[jprofiler img]:https://www.ej-technologies.com/images/product_banners/jprofiler_medium.png\n\n[appveyor]:https://ci.appveyor.com/project/checkstyle/checkstyle/history\n[appveyor img]:https://ci.appveyor.com/api/projects/status/rw6bw3dl9kph6ucc?svg=true\n\n[coverage]:https://codecov.io/github/checkstyle/checkstyle?branch=master\n[coverage img]:https://codecov.io/github/checkstyle/checkstyle/coverage.svg?branch=master\n\n[mavenbadge]:https://search.maven.org/search?q=g:%22com.puppycrawl.tools%22%20AND%20a:%22checkstyle%22\n[mavenbadge img]:https://img.shields.io/maven-central/v/com.puppycrawl.tools/checkstyle.svg?label=Maven%20Central\n\n[stackoverflow]:https://stackoverflow.com/questions/tagged/checkstyle\n[stackoverflow img]:https://img.shields.io/badge/stackoverflow-CHECKSTYLE-blue.svg\n\n[teamcity]:https://teamcity.jetbrains.com/viewType.html?buildTypeId=Checkstyle_IdeaInspectionsMaster\n[teamcity img]:https://teamcity.jetbrains.com/app/rest/builds/buildType:(id:Checkstyle_IdeaInspectionsMaster)/statusIcon\n\n[circleci]: https://circleci.com/gh/checkstyle/checkstyle/tree/master\n[circleci img]: https://circleci.com/gh/checkstyle/checkstyle/tree/master.svg?style=svg\n\n[cirrusci]: https://cirrus-ci.com/github/checkstyle/checkstyle\n[cirrusci img]: https://api.cirrus-ci.com/github/checkstyle/checkstyle.svg?branch=master\n\n[snyk]: https://snyk.io/test/github/checkstyle/checkstyle?targetFile=pom.xml\n[snyk img]: https://snyk.io/test/github/checkstyle/checkstyle/badge.svg\n\n[semaphoreci]: https://checkstyle.semaphoreci.com/projects/checkstyle\n[semaphoreci img]: https://checkstyle.semaphoreci.com/badges/checkstyle/branches/master.svg?style=shields\n\n[azure]:https://dev.azure.com/romanivanovjr/romanivanovjr/_build/latest?definitionId=1\u0026branchName=master\n[azure 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