}

    @Override
    public void setMaxHeapSize(String heapSize) {
        options.setMaxHeapSize(heapSize);
    }

    @Override
    public String getDefaultCharacterEncoding() {
        return options.getDefaultCharacterEncoding();
    }

    @Override
    public void setDefaultCharacterEncoding(String defaultCharacterEncoding) {
        options.setDefaultCharacterEncoding(defaultCharacterEncoding);

        getDelegate().systemProperty(name, value);
        return this;
    }

    @Nullable
    @Override
    default String getDefaultCharacterEncoding() {
        return getDelegate().getDefaultCharacterEncoding();
    }

    @Override
    default void setDefaultCharacterEncoding(@Nullable String defaultCharacterEncoding) {

    }

    @Override
    public void setMinHeapSize(String heapSize) {
        javaOptions.setMinHeapSize(heapSize);
    }

    @Override
    public String getDefaultCharacterEncoding() {
        return javaOptions.getDefaultCharacterEncoding();
    }

    @Override
    public void setDefaultCharacterEncoding(String defaultCharacterEncoding) {
        javaOptions.setDefaultCharacterEncoding(defaultCharacterEncoding);

        }

        properties.put("file.encoding", getDefaultCharacterEncoding());
        if (getJavaVersionFromJavaHome() == JavaVersion.VERSION_18) {
            properties.put("sun.stdout.encoding", getDefaultCharacterEncoding());
            properties.put("sun.stderr.encoding", getDefaultCharacterEncoding());
        } else if (getJavaVersionFromJavaHome().isCompatibleWith(JavaVersion.VERSION_19)) {

     * @return The default character encoding. Returns null if the {@link java.nio.charset.Charset#defaultCharset() default character encoding of this JVM} should be used.
     */
    @Nullable @Optional @Input
     String getDefaultCharacterEncoding();

    /**
     * Sets the default character encoding to use.
     *

        javaExecSpec.setMinHeapSize(heapSize);
    }

    /**
     * {@inheritDoc}
     */
    @Override
    public String getDefaultCharacterEncoding() {
        return javaExecSpec.getDefaultCharacterEncoding();
    }

    /**
     * {@inheritDoc}
     */
    @Override
    public void setDefaultCharacterEncoding(String defaultCharacterEncoding) {

                public static void main(String[] args) {
                    System.out.println("default encoding: " + Charset.defaultCharset().name());
                }
            }
        """, executer.getDefaultCharacterEncoding()

        and:
        buildFile.write """
            apply plugin: "java"

            task echoDefaultEncoding(type: JavaExec) {
                classpath = project.layout.files(compileJava)

        @Override
        public void setWorkingDir(Object dir) {
            throw new UnsupportedOperationException();
        }

        @Override
        public String getDefaultCharacterEncoding() {
            return delegate.getDefaultCharacterEncoding();
        }

        @Override
        public ProcessForkOptions workingDir(Object dir) {
            throw new UnsupportedOperationException();
        }

    public String getMaxHeapSize() {
        return maxHeapSize;
    }

    public void setMaxHeapSize(String heapSize) {
        this.maxHeapSize = heapSize;
    }

    public String getDefaultCharacterEncoding() {
        return immutableSystemProperties.get(FILE_ENCODING_KEY).toString();
    }

    public void setDefaultCharacterEncoding(String defaultCharacterEncoding) {

        return getJavaVersionFromJavaHome().isJava7Compatible();
    }

    @Override
    protected GradleHandle createGradleHandle() {
        return createForkingGradleHandle(getResultAssertion(), getDefaultCharacterEncoding(), getExecHandleFactory()).start();
    }

    protected Factory<? extends AbstractExecHandleBuilder> getExecHandleFactory() {
        return new Factory<DefaultExecHandleBuilder>() {
            @Override