@ElementTypesAreNonnullByDefault
final class Platform {
  private Platform() {}

  /** Returns a thread-local 1024-char array. */
  static char[] charBufferFromThreadLocal() {
    // requireNonNull accommodates Android's @RecentlyNullable annotation on ThreadLocal.get
    return requireNonNull(DEST_TL.get());
  }

  /**
   * A thread-local destination buffer to keep us from creating new buffers. The starting size is

 * limitations under the License.
 */

package com.google.common.util.concurrent;

import junit.framework.TestCase;

/**
 * Test for {@link ForwardingBlockingDeque}
 *
 * @author Emily Soldal
 */
public class ForwardingBlockingDequeTest extends TestCase {

  public void testForwarding() {
    ForwardingObjectTester.testForwardingObject(ForwardingBlockingDeque.class);
  }

 * limitations under the License.
 */

package com.google.common.util.concurrent;

import junit.framework.TestCase;

/**
 * Test for {@link ForwardingBlockingDeque}
 *
 * @author Emily Soldal
 */
public class ForwardingBlockingDequeTest extends TestCase {

  public void testForwarding() {
    ForwardingObjectTester.testForwardingObject(ForwardingBlockingDeque.class);
  }

    // racy single-check idiom, this is safe because Optional is immutable.
    Optional<Charset> local = parsedCharset;
    if (local == null) {
      String value = null;
      local = Optional.absent();
      for (String currentValue : parameters.get(CHARSET_ATTRIBUTE)) {
        if (value == null) {
          value = currentValue;
          local = Optional.of(Charset.forName(value));
        } else if (!value.equals(currentValue)) {

   * initializer.
   */
  private static class LocalClassWithSeeminglyHiddenThisInStaticInitializer {
    static {
      class Local {
        @SuppressWarnings("unused") // through reflection
        Local(LocalClassWithSeeminglyHiddenThisInStaticInitializer outer) {}
      }
      Constructor<?> constructor = Local.class.getDeclaredConstructors()[0];

   * add the suppression to the whole method (which turns off checking for a large section of code),
   * or extract a variable, and put the suppression on that. However, a local variable typically
   * doesn't work: Because nullness analyses typically infer the nullness of local variables,
   * there's no way to assign a {@code @Nullable T} to a field {@code T foo;} and instruct the

                (ThreadGroup) null, finalizer, threadName, defaultStackSize, inheritThreadLocals);
      } catch (Throwable t) {
        logger.log(
            Level.INFO, "Failed to create a thread without inherited thread-local values", t);
      }
    }
    if (thread == null) {
      thread = new Thread((ThreadGroup) null, finalizer, threadName);
    }
    thread.setDaemon(true);

    try {

 * it as a {@code GwtIncompatible} annotation. And for {@code Futures.catching}, we need the GWT
 * compiler to autostrip the normal server method in order to expose the special, inherited GWT
 * version.
 */
@GwtCompatible
@ElementTypesAreNonnullByDefault
final class Partially {
  /**
   * The presence of this annotation on an API indicates that the method <i>may</i> be used with the

 * backing collection.
 *
 * @author Jared Levy
 * @author Louis Wasserman
 */
@GwtCompatible(serializable = true, emulated = true)
@SuppressWarnings("serial")
@ElementTypesAreNonnullByDefault
abstract class ImmutableAsList<E> extends ImmutableList<E> {
  abstract ImmutableCollection<E> delegateCollection();

  @Override
  public boolean contains(@CheckForNull Object target) {

 * backing collection.
 *
 * @author Jared Levy
 * @author Louis Wasserman
 */
@GwtCompatible(serializable = true, emulated = true)
@SuppressWarnings("serial")
@ElementTypesAreNonnullByDefault
abstract class ImmutableAsList<E> extends ImmutableList<E> {
  abstract ImmutableCollection<E> delegateCollection();

  @Override
  public boolean contains(@CheckForNull Object target) {