return null;
          }
        };
    Callables.threadRenaming(callable, newName).call();
    assertEquals(oldName, Thread.currentThread().getName());
  }

  @J2ktIncompatible
  @GwtIncompatible // threads
  public void testRenaming_exceptionalReturn() throws Exception {
    String oldName = Thread.currentThread().getName();
    Supplier<String> newName = Suppliers.ofInstance("MyCrazyThreadName");

  public void testUsAscii() {
    assertEquals(Charset.forName("US-ASCII"), Charsets.US_ASCII);
  }

  @J2ktIncompatible
  @GwtIncompatible // Non-UTF-8 Charset
  public void testIso88591() {
    assertEquals(Charset.forName("ISO-8859-1"), Charsets.ISO_8859_1);
  }

  public void testUtf8() {
    assertEquals(Charset.forName("UTF-8"), Charsets.UTF_8);
  }

  @J2ktIncompatible

        var task: Task =
          withLock {
            runCallCount++
            awaitTaskToRun()
          } ?: return

        val currentThread = Thread.currentThread()
        val oldName = currentThread.name
        try {
          while (true) {
            currentThread.name = task.name
            val delayNanos =
              logger.logElapsed(task, task.queue!!) {
                task.runOnce()

  @SuppressLint("DiscouragedPrivateApi")
  private fun getProcess(): String? =
    if (Build.VERSION.SDK_INT >= Build.VERSION_CODES.P) {
      getProcessName()
    } else {
      Class
        .forName("android.app.ActivityThread")
        .getDeclaredMethod("currentProcessName")
        .apply { isAccessible = true }
        .invoke(null) as String
    }

    String prefix =
        useMonitor ? "com.google.common.util.concurrent.MonitorBased" : "java.util.concurrent.";
    String className = prefix + queueType + "BlockingQueue";
    Constructor<?> constructor = Class.forName(className).getConstructor(int.class);
    queue = (BlockingQueue<String>) constructor.newInstance(capacity);

    strings = new String[capacity];
    for (int i = 0; i < capacity; i++) {

            return fromClassNameToSuffix(componentName);
        }

        @Override
        public Class<?> fromComponentNameToClass(String componentName) {
            try {
                return Class.forName(componentName);
            } catch (ClassNotFoundException e) {
                return null;
            }
        }

        @Override
        public Class<?> toCompleteClass(Class<?> clazz) {

                final String userAgent = searchLog.getUserAgent();
                final boolean isBot =
                        userAgent != null && stream(botNames).get(stream -> stream.anyMatch(botName -> userAgent.indexOf(botName) >= 0));
                if (!isBot) {
                    searchLog.getUserInfo().ifPresent(userInfo -> {
                        final String code = userInfo.getId();

       * would result in compilation failure if we directly refer to these classes.
       */
      Class<?> sharedSecrets = Class.forName(SHARED_SECRETS_CLASSNAME, false, null);
      Method langAccess = sharedSecrets.getMethod("getJavaLangAccess");
      return langAccess.invoke(null);
    } catch (ThreadDeath death) {
      throw death;

     * 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

        // but we can test that the class exists and basic functionality
        try {
            // Use reflection to verify ProcessDestroyer class exists
            final Class<?> destroyerClass = Class.forName("org.codelibs.fess.thumbnail.impl.CommandGenerator$ProcessDestroyer");
            assertNotNull("ProcessDestroyer class should exist", destroyerClass);