File toolsJar = new File(javaHome, "lib/tools.jar");
        if (toolsJar.exists()) {
            return Optional.of(toolsJar);
        }
        if (javaHome.getName().equalsIgnoreCase("jre")) {
            javaHome = javaHome.getParentFile();
            toolsJar = new File(javaHome, "lib/tools.jar");
            if (toolsJar.exists()) {
                return Optional.of(toolsJar);

            }
        }

        when:
        def jvm = new Jvm(os, software.file('jdk/jre'), "1.8.0.221", 8)

        then:
        jvm.javaHome == software.file('jdk')
        jvm.jdk
        jvm.toolsJar == software.file('jdk/lib/tools.jar')
        jvm.javaExecutable == software.file('jdk/bin/java.exe')
        jvm.javacExecutable == software.file('jdk/bin/javac.exe')

            File javaExecutable = new File(javaForkOptions.getExecutable());
            JavaInfo jvm = Jvm.forHome(javaExecutable.getParentFile().getParentFile());
            File toolsJar = jvm.getToolsJar();
            if (toolsJar == null) {
                String contextualMessage = String.format("The 'tools.jar' cannot be found in the JDK '%s'.", jvm.getJavaHome());

        List<File> antClasspath = Lists.newArrayList(classPathRegistry.getClassPath("ANT").getAsFiles());
        // Need tools.jar for compile tasks
        File toolsJar = Jvm.current().getToolsJar();
        if (toolsJar != null) {
            antClasspath.add(toolsJar);
        }

        antLoader = classLoaderFactory.createIsolatedClassLoader("isolated-ant-loader", DefaultClassPath.of(antClasspath));