javaExecSpec.setMinHeapSize(heapSize);
    }

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

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

    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

    public String getMinHeapSize() {
        return forkOptions.getMinHeapSize();
    }

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

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