try {
        val alpnClassName = "org.eclipse.jetty.alpn.ALPN"
        val alpnClass = Class.forName(alpnClassName, true, null)
        val providerClass = Class.forName("$alpnClassName\$Provider", true, null)
        val clientProviderClass = Class.forName("$alpnClassName\$ClientProvider", true, null)
        val serverProviderClass = Class.forName("$alpnClassName\$ServerProvider", true, null)

      return try {
        val sslSocketClass = Class.forName("$packageName.OpenSSLSocketImpl") as Class<in SSLSocket>
        val sslSocketFactoryClass =
          Class.forName("$packageName.OpenSSLSocketFactoryImpl") as Class<in SSLSocketFactory>
        val paramsClass = Class.forName("$packageName.SSLParametersImpl")

 *
 * https://github.com/junit-team/junit5/issues/2469
 */
fun treeListener(): TestExecutionListener {
  val colorPalette =
    Class.forName("org.junit.platform.console.tasks.ColorPalette").getField("DEFAULT").apply {
      isAccessible = true
    }.get(null)
  return Class.forName(
    "org.junit.platform.console.tasks.TreePrintingListener",
  ).declaredConstructors.first()
    .apply {
      isAccessible = true
    }

     * @throws ClassNotFoundRuntimeException
     *             クラスが見つからなかった場合
     * @see Class#forName(String, boolean, ClassLoader)
     */
    public static <T> Class<T> forName(final String className) throws ClassNotFoundRuntimeException {
        assertArgumentNotEmpty("className", className);

        return forName(className, Thread.currentThread().getContextClassLoader());
    }

    /**

        shutdownCommonsHttpClient();
    }

    private void shutdownCommonsHttpClient() { // from Tomcat7ConfigServlet (old class)
        try {
            final Class<?> clazz = Class.forName("org.apache.commons.httpclient.MultiThreadedHttpConnectionManager");
            final Method method = clazz.getMethod("shutdownAll", (Class<?>[]) null);
            method.invoke(null, (Object[]) null);

                        }
                    }
                    String impl = properties.getProperty(slf4jBinding);
                    if (impl != null) {
                        return (Slf4jConfiguration) Class.forName(impl).newInstance();
                    }
                } catch (IOException | ClassNotFoundException | IllegalAccessException | InstantiationException ex) {
                    // ignore and move on to the next

    }

    protected void setupServletFileUpload(final JakartaServletDiskFileUpload upload, final HttpServletRequest request) {
        upload.setHeaderCharset(Charset.forName(request.getCharacterEncoding()));
        upload.setSizeMax(getSizeMax());
        upload.setFileCountMax(getFileCountMax()); // since commons-fileupload-1.5
    }

    protected long getSizeMax() {

 *
 * @author shinsuke
 *
 */
public class CoreLibConstants {

    /**
     * UTF-8
     */
    public static final String UTF_8 = "UTF-8";

    public static final Charset CHARSET_UTF_8 = Charset.forName(UTF_8);

    public static final String DATE_FORMAT_ISO_8601_BASIC = "yyyyMMdd'T'HHmmss.SSSZ";

    public static final String DATE_FORMAT_ISO_8601_EXTEND = "yyyy-MM-dd'T'HH:mm:ss.SSSZ";

  }

  private static Method getJdkNextDown() throws Exception {
    try {
      return Math.class.getMethod("nextDown", double.class);
    } catch (NoSuchMethodException expectedBeforeJava8) {
      return Class.forName("sun.misc.FpUtils").getMethod("nextDown", double.class);
    }
  }

  @AndroidIncompatible // TODO(cpovirk): File bug for BigDecimal.doubleValue().
  public void testBigToDouble() {

  @Test fun testCharsetNameIsDoubleQuotedAndSingleQuotedAndroid() {
    val mediaType = "text/plain;charset=\"'utf-8'\"".toMediaType()
    if (isAndroid) {
      // Charset.forName("'utf-8'") == UTF-8
      assertEquals("UTF-8", mediaType.charsetName())
    } else {
      assertNull(mediaType.charset())
    }
  }

  @Test fun testDefaultCharset() {
    val noCharset = parse("text/plain")