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Update Gradle config to always compile Java code using JDK 17 #971

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Jun 5, 2024
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Update Gradle config to always compile Java code using JDK 17 #971

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8 changes: 8 additions & 0 deletions build.gradle
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Original file line number Diff line number Diff line change
Expand Up @@ -49,6 +49,14 @@ subprojects { project ->
}
project.tasks.withType(JavaCompile) {
dependsOn(installGitHooks)
// Always compile using JDK 17, independent of the JDK version used to run Gradle.
// We can't compile on JDK 21 since some internal javac APIs changed between 17
// and 21, and for now NullAway compiles against the JDK 17 APIs and uses reflection
// on JDK 21+. This configuration means compilation will succeed even if Gradle
// is running on JDK 21+.
javaCompiler = javaToolchains.compilerFor {
languageVersion = JavaLanguageVersion.of(17)
}
options.compilerArgs += [
"-Xlint:deprecation",
"-Xlint:rawtypes",
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