<version>2.23.0</version>
              </path>
            </annotationProcessorPaths>
            <!-- Fork:

                 - for JDK8 because we use a javac9 bootclasspath

                 - for JDK9+ because we need args like add-exports
                 -->
            <fork>true</fork>
          </configuration>
        </plugin>
        <plugin>
          <artifactId>maven-jar-plugin</artifactId>

                <version>2.23.0</version>
              </path>
            </annotationProcessorPaths>
            <!-- Fork:

                 - for JDK8 because we use a javac9 bootclasspath

                 - for JDK9+ because we need args like add-exports
                 -->
            <fork>true</fork>
          </configuration>
        </plugin>
        <plugin>
          <artifactId>maven-jar-plugin</artifactId>

2\cocoartf1404\cocoasubrtf470 \cocoascreenfonts1{\fonttbl\f0\fswiss\fcharset0 Helvetica;} {\colortbl;\red255\green255\blue255;} \pard\tx560\tx1120\tx1680\tx2240\tx2800\tx3360\tx3920\tx4480\tx5040\tx5600\tx6160\tx6720\pardirnatural\qc \f0\fs24 \cf0 Fork}VerticalPad0ClassLin{82, 147}{168, 133}StylestrokeHeadArrow{{24, 101.5}, {64, 28}}ClassShapedGraphicFi.00358888g0.350909r0.046105FontHelveticaS{\rtf1\ansi\ansicpg1252\cocoartf1404\cocoasubrtf470 \cocoascreenfonts1{\fonttbl\f0\fswiss\fcharset0 Helvetica;}...

            forkedProjects = new ArrayList<>(forkedExecutions.size());

            try {
                for (Map.Entry<String, List<MojoExecution>> fork : forkedExecutions.entrySet()) {
                    String projectId = fork.getKey();

                    ProjectIndex projectIndex = session.getSession()
                            .getData()

                    <showDeprecation>true</showDeprecation>
                    <showWarnings>true</showWarnings>
                    <debug>true</debug>
                    <fork>true</fork>
                    <compilerArgs>
                        <arg>-Xlint:unchecked</arg>
                    </compilerArgs>
                    <maxmem>128m</maxmem>
                </configuration>

[source.multi-language-sample,groovy]
----
<task>.options.fork = true
----
====

To apply the configuration to _all_ Java compilation tasks, you can `configureEach` java compilation task:

====
include::sample[dir="snippets/performance/parallelTestExecution/kotlin",files="build.gradle.kts[tags=fork-java]"]
include::sample[dir="snippets/performance/parallelTestExecution/groovy",files="build.gradle[tags=fork-java]"]
====

                    <showDeprecation>true</showDeprecation>
                    <showWarnings>true</showWarnings>
                    <debug>true</debug>
                    <fork>true</fork>
                    <compilerArgs>
                        <arg>-Xlint:unchecked</arg>
                    </compilerArgs>
                    <maxmem>128m</maxmem>
                </configuration>

                        <version>3.8.0</version>
                        <configuration>
                            <source>1.8</source>
                            <target>1.8</target>
                            <fork>true</fork>
                            <meminitial>${config.compilerMemory}</meminitial>
                            <maxmem>${config.compilerMemory}</maxmem>
                        </configuration>
                    </plugin>

        buildFile << """
            apply plugin: 'java'
            ${mavenCentralRepository()}
            dependencies { ${testImplementationConfiguration} 'junit:junit:4.13' }
            compileTestJava.options.fork = true  // forked as 'Gradle Test Executor 1'
        """

        file("src/test/java/MyTest.java") << """
            package example;
            public class MyTest {

        outputContains("Appending implementation to build cache key:")
        outputContains("Appending additional implementation to build cache key:")
        outputContains("Appending input value fingerprint for 'options.fork'")
        outputContains("Appending input file fingerprints for 'classpath'")
        def sourcesDebugLogging = "Appending input file fingerprints for 'stableSources' to build cache key: "