import org.gradle.jvm.toolchain.internal.SpecificInstallationToolchainSpec;

import javax.annotation.Nullable;

public class JavadocExecutableUtils {

    @Nullable
    public static JavaToolchainSpec getExecutableOverrideToolchainSpec(Javadoc task, ObjectFactory objectFactory) {
        String customExecutable = task.getExecutable();
        if (customExecutable != null) {

import javax.annotation.Nullable;
import java.io.File;

public class JavaCompileExecutableUtils {

    @Nullable
    public static JavaToolchainSpec getExecutableOverrideToolchainSpec(JavaCompile task, ObjectFactory objectFactory) {
        if (!task.getOptions().isFork()) {
            return null;
        }

        ForkOptions forkOptions = task.getOptions().getForkOptions();

import org.gradle.jvm.toolchain.internal.SpecificInstallationToolchainSpec;

import javax.annotation.Nullable;

public class JavaExecExecutableUtils {

    @Nullable
    public static JavaToolchainSpec getExecutableOverrideToolchainSpec(JavaExec task, ObjectFactory objectFactory) {
        String customExecutable = task.getExecutable();
        if (customExecutable != null) {