Method inquireSecContextPrep = null;
        Object inquireTypeSessionKeyPrep = null;

        try {
            extendedGSSContextClassPrep = Class.forName(OPENJDK_JGSS_EXT_GSSCTX_CLASS);
            Class<?> inquireTypeClass = Class.forName(OPENJDK_JGSS_INQUIRE_TYPE_CLASS);
            inquireTypeSessionKeyPrep = getSessionKeyInquireType(inquireTypeClass);

    try {
      Class.forName("java.nio.file.Path");
      return new JavaNioCreator();
    } catch (ClassNotFoundException runningUnderAndroid) {
      // Try another way.
    }

    try {
      int version = (int) Class.forName("android.os.Build$VERSION").getField("SDK_INT").get(null);
      int jellyBean =
          (int) Class.forName("android.os.Build$VERSION_CODES").getField("JELLY_BEAN").get(null);

     * @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());
    }

    /**

    }

    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() {

  }

  private static boolean unsafeComparatorAvailable() {
    // See Java Puzzler #44
    // Use reflection instead of catching NoClassDefFoundError
    try {
      Class.forName(unsafeComparatorClassName());
      return true;
    } catch (Error | ClassNotFoundException tolerable) {
      /*
       * We're probably running on Android.
       *
       * A note on exception types:

        try {
          Class.forName("org.eclipse.jetty.alpn.ALPN", true, null)
          true
        } catch (cnfe: ClassNotFoundException) {
          false
        }

      val isCorrettoSupported: Boolean =
        try {
          // Trigger an early exception over a fatal error, prefer a RuntimeException over Error.
          Class.forName("com.amazon.corretto.crypto.provider.AmazonCorrettoCryptoProvider")

        final HttpPost httpPost = new HttpPost(url);
        final HttpEntity postEntity = MultipartEntityBuilder.create().setMode(HttpMultipartMode.BROWSER_COMPATIBLE)
                .setCharset(Charset.forName("UTF-8")).addBinaryBody("filedata", in).build();
        httpPost.setEntity(postEntity);

        try (CloseableHttpResponse response = httpClient.execute(httpPost)) {

      // platforms in order to support Robolectric, which mixes classes from both Android and the
      // Oracle JDK. Note that we don't support HTTP/2 or other nice features on Robolectric.
      val sslContextClass = Class.forName("sun.security.ssl.SSLContextImpl")
      val context = readFieldOrNull(sslSocketFactory, sslContextClass, "context") ?: return null
      readFieldOrNull(context, X509TrustManager::class.java, "trustManager")

      return false;
    }
    try {
      Class.forName("com.google.appengine.api.utils.SystemProperty");
    } catch (ClassNotFoundException e) {
      return false;
    }
    try {
      // If the current environment is null, we're not inside AppEngine.
      return Class.forName("com.google.apphosting.api.ApiProxy")
              .getMethod("getCurrentEnvironment")

     * unable to do so.
     */
    static GetCheckedTypeValidator getBestValidator() {
      try {
        @SuppressWarnings("rawtypes") // class literals
        Class<? extends Enum> theClass =
            Class.forName(CLASS_VALUE_VALIDATOR_NAME).asSubclass(Enum.class);
        return (GetCheckedTypeValidator) theClass.getEnumConstants()[0];
      } catch (ClassNotFoundException
          | RuntimeException