internal val resolver = DnsResolver.getInstance()
  private val executor = Executors.newSingleThreadExecutor()

  override fun query(
    hostname: String,
    callback: AsyncDns.Callback,
  ) {
    try {
      resolver.query(
        network,
        hostname,
        dnsClass.type,
        DnsResolver.FLAG_EMPTY,
        executor,
        null,
        object : DnsResolver.Callback<List<InetAddress>> {

import static java.util.concurrent.TimeUnit.SECONDS;

import com.google.common.testing.NullPointerTester;
import java.util.concurrent.CountDownLatch;
import java.util.concurrent.Executor;
import java.util.concurrent.Executors;
import java.util.concurrent.atomic.AtomicInteger;
import junit.framework.TestCase;

/**
 * Unit tests for {@link ExecutionList}.
 *
 * @author Nishant Thakkar
 * @author Sven Mawson
 */

import static java.util.concurrent.TimeUnit.SECONDS;

import com.google.common.testing.NullPointerTester;
import java.util.concurrent.CountDownLatch;
import java.util.concurrent.Executor;
import java.util.concurrent.Executors;
import java.util.concurrent.atomic.AtomicInteger;
import junit.framework.TestCase;

/**
 * Unit tests for {@link ExecutionList}.
 *
 * @author Nishant Thakkar
 * @author Sven Mawson
 */

   */
  public static <V extends @Nullable Object> ListenableFuture<V> listenInPoolThread(
      Future<V> future, Executor executor) {
    checkNotNull(executor);
    if (future instanceof ListenableFuture) {
      return (ListenableFuture<V>) future;
    }
    return new ListenableFutureAdapter<>(future, executor);
  }

  /**
   * An adapter to turn a {@link Future} into a {@link ListenableFuture}. This will wait on the

import assertk.assertions.isEmpty
import assertk.assertions.isNotEmpty
import java.io.ByteArrayOutputStream
import java.io.PrintStream
import java.util.concurrent.ExecutorService
import java.util.concurrent.Executors
import okhttp3.Dispatcher
import okhttp3.HttpUrl.Companion.toHttpUrl
import okhttp3.OkHttpClient
import okhttp3.Request
import okhttp3.containers.BasicMockServerTest.Companion.MOCKSERVER_IMAGE

 * limitations under the License.
 */
package okhttp3.recipes.kt

import java.io.IOException
import java.util.concurrent.Executors
import java.util.concurrent.TimeUnit
import okhttp3.OkHttpClient
import okhttp3.Request

class CancelCall {
  private val executor = Executors.newScheduledThreadPool(1)
  private val client = OkHttpClient()

  fun run() {
    val request =
      Request.Builder()

   *
   * @param executor The executor to decorate
   * @param nameSupplier The source of names for each task
   */
  @J2ktIncompatible
  @GwtIncompatible // concurrency
  static Executor renamingDecorator(final Executor executor, final Supplier<String> nameSupplier) {
    checkNotNull(executor);
    checkNotNull(nameSupplier);
    return new Executor() {
      @Override

   */
  public static <V extends @Nullable Object> ListenableFuture<V> listenInPoolThread(
      Future<V> future, Executor executor) {
    checkNotNull(executor);
    if (future instanceof ListenableFuture) {
      return (ListenableFuture<V>) future;
    }
    return new ListenableFutureAdapter<>(future, executor);
  }

  /**
   * An adapter to turn a {@link Future} into a {@link ListenableFuture}. This will wait on the

        }

        // 時間取得
        final long time = System.nanoTime();

        // Callableタスク(複数)を実行する
        final ExecutorService executor = Executors.newFixedThreadPool(numTasks);
        try {
            final List<Future<Integer>> futures = executor.invokeAll(tasks);
            for (final Future<Integer> future : futures) {
                future.get();
            }

    Future<?> first =
        blocked.submit(
            new Runnable() {
              @Override
              public void run() {
                executor.execute(Runnables.doNothing());
              }
            });
    future.get(10, SECONDS);
    assertThrows(RejectedExecutionException.class, () -> executor.execute(Runnables.doNothing()));
    latch.countDown();