The `release` option of the Java compiler was introduced in Java 9.
However, using this option with Gradle is only possible starting with Java 10, due to a https://bugs.openjdk.java.net/browse/JDK-8139607[bug in Java 9].

==== Using Java compatibility options

WARNING: Using compatibility properties can lead to runtime failures when executing compiled code due to weaker guarantees they provide.

 *       not look for classes in the <i>module path</i>.
 *   <li>It understands only {@code file:} URLs. This means that it does not understand <a
 *       href="https://openjdk.java.net/jeps/220">{@code jrt:/} URLs</a>, among <a
 *       href="https://github.com/classgraph/classgraph/wiki/Classpath-specification-mechanisms">others</a>.

 *       not look for classes in the <i>module path</i>.
 *   <li>It understands only {@code file:} URLs. This means that it does not understand <a
 *       href="https://openjdk.java.net/jeps/220">{@code jrt:/} URLs</a>, among <a
 *       href="https://github.com/classgraph/classgraph/wiki/Classpath-specification-mechanisms">others</a>.

release has many critical bug fixes and is safe to run in production. We're eager to stabilize our
new APIs so we can get out of alpha.

 *  New: Support Java 21's virtual threads (‘OpenJDK Project Loom’). We changed OkHttp's internals
    to use `Lock` and `Condition` instead of `synchronized` for best resource utilization.

     | Language Version:   16
     | Vendor:             Microsoft
     | Architecture:       aarch64
     | Is JDK:             true
     | Detected by:        SDKMAN!

 + OpenJDK 15-ea
     | Location:           /Users/user/customJdks/15.ea.21-open
     | Language Version:   15
     | Vendor:             AdoptOpenJDK
     | Architecture:       x86_64
     | Is JDK:             true

 * Added support for compressed data frames.
 * Process push promise callbacks in order.
 * Update to http/2 draft 12.
 * Update to HPACK draft 07.
 * Add ALPN support. Maven will use ALPN on OpenJDK 8.
 * Update NPN dependency to target `jdk7u60-b13` and `Oracle jdk7u55-b13`.
 * Ensure SPDY variants support zero-length DELETE and POST.
 * Prevent leaking a cache item's InputStreams when metadata read fails.

            dependencies {
               implementation files('broken-utf8.jar')
            }
        '''
        // This file has a file name which is not UTF-8.
        // See https://bugs.openjdk.java.net/browse/JDK-7062777?focusedCommentId=12254124&page=com.atlassian.jira.plugin.system.issuetabpanels:comment-tabpanel#comment-12254124.
        resources.findResource('broken-utf8.is-a-jar').copyTo(file('broken-utf8.jar'))