build(deps): bump org.checkerframework:checker-qual from 3.55.1 to 4.0.0

[dependabot]

Bumps org.checkerframework:checker-qual from 3.55.1 to 4.0.0.

Release notes

Sourced from org.checkerframework:checker-qual's releases.

Release 4.0.0 of the Checker Framework

Version 4.0.0 (2026-04-07)

User-visible changes

To run the Checker Framework, you need to use a JDK 17 or later version of javac. That is, you need to use JDK 17 or later when compiling your code.

The Checker Framework can type-check any Java project, including projects that compile to Java 8 or 11 bytecodes and run on JRE versions 8 or 11. That is, your code can run under any release of Java, from Java 8 onward.

The type qualifiers and utility libraries in checker-qual.jar and checker-util.jar still use Java 11 bytecode. Thus, they may be used in projects that run under Java 11 or later.

Changes since version 3.0.0

Since version 3.0.0, 91 authors have made over 4500 commits and closed over 600 issues. Thanks to everyone who contributed!

New checkers include:

• The Index Checker warns about out-of-bounds accesses to arrays and strings.
• The Initialized Fields Checker warns if a constructor does not initialize a field.
• The Resource Leak Checker guarantees that every resource is closed rather than leaked. Examples of resources are a channel, executor, ExecutionControl, file, FileLock, Formatter, reader, Scanner, socket, stream, writer, etc.
• The SQL Quotes Checker helps prevent SQL injection vulnerabilities.

New command-line arguments include:

• -AskipFiles, -AonlyFiles
• -AassumeSideEffectFree, -AassumeDeterministic, -AassumePure, -AassumePureGetters
• -AuseConservativeDefaultsForUncheckedCode
• -AignoreRawTypeArguments
• -AwarnRedundantAnnotations
• -Ainfer=ajava, -AinferOutputDirectory, -AinferOutputOriginal, -AshowWpiFailedInferences
• -AshowSuppressWarningsStrings, -AwarnUnneededSuppressionsExceptions
• -AshowPrefixInWarningMessages
• -AstubNoWarnIfNotFound, -AstubWarnNote, -AmergeStubsWithSource
• -Aonelinemsg, -AdumpOnErrors, -AexceptionLineSeparator
• -ApermitMissingJdk, -AparseAllJdk
• -AslowTypecheckingSeconds
• -Aversion, -AprintGitProperties
• You can pass an option to only a particular checker (not all checkers) by using an underscore prefix.

Other improvements include thousands of enhancements and bug fixes -- too many to list here.

Implementation details

All previously-deprecated methods and classes have been removed. If your project builds upon the Checker Framework, we suggest that you upgrade to version 3.55.1, resolve all the deprecation warnings, then upgrade to version 4.0.0.

Changelog

Sourced from org.checkerframework:checker-qual's changelog.

Version 4.0.0 (2026-04-07)

User-visible changes

To run the Checker Framework, you need to use a JDK 17 or later version of javac. That is, you need to use JDK 17 or later when compiling your code.

The Checker Framework can type-check any Java project, including projects that compile to Java 8 or 11 bytecodes and run on JRE versions 8 or 11. That is, your code can run under any release of Java, from Java 8 onward.

The type qualifiers and utility libraries in checker-qual.jar and checker-util.jar still use Java 11 bytecode. Thus, they may be used in projects that run under Java 11 or later.

Changes since version 3.0.0

Since version 3.0.0, 91 authors have made over 4500 commits and closed over 600 issues. Thanks to everyone who contributed!

New checkers include:

• The Index Checker warns about out-of-bounds accesses to arrays and strings.
• The Initialized Fields Checker warns if a constructor does not initialize a field.
• The Resource Leak Checker guarantees that every resource is closed rather than leaked. Examples of resources are a channel, executor, ExecutionControl, file, FileLock, Formatter, reader, Scanner, socket, stream, writer, etc.
• The SQL Quotes Checker helps prevent SQL injection vulnerabilities.

New command-line arguments include:

• -AskipFiles, -AonlyFiles
• -AassumeSideEffectFree, -AassumeDeterministic, -AassumePure, -AassumePureGetters
• -AuseConservativeDefaultsForUncheckedCode
• -AignoreRawTypeArguments
• -AwarnRedundantAnnotations
• -Ainfer=ajava, -AinferOutputDirectory, -AinferOutputOriginal, -AshowWpiFailedInferences
• -AshowSuppressWarningsStrings, -AwarnUnneededSuppressionsExceptions
• -AshowPrefixInWarningMessages
• -AstubNoWarnIfNotFound, -AstubWarnNote, -AmergeStubsWithSource
• -Aonelinemsg, -AdumpOnErrors, -AexceptionLineSeparator
• -ApermitMissingJdk, -AparseAllJdk
• -AslowTypecheckingSeconds

... (truncated)

Commits

• 479d087 new release 4.0.0
• bfff757 Put the manual in the right place.
• c532f6d Put a copy of manual.pdf at top level of website as expected.
• 5e53e6c No closed issues.
• e67ae85 Prep for release.
• 4192d0d Remove file SKIP-REQUIRE-JAVADOC
• 7d6d856 Remove or update references to JDK 8-16
• b1e3761 Remove all deprecated methods
• a1b3064 Directly use Java 17 and below Javac APIs. (#7582)
• 4efdbdb Remove support for Java 8 from scripts and build scripts. (#7575)
• Additional commits viewable in compare view

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