import com.google.common.collect.testing.features.CollectionFeature;
import com.google.common.collect.testing.features.CollectionSize;
import org.junit.Ignore;

/**
 * A generic JUnit test which tests {@code peek()} operations on a queue. Can't be invoked directly;
 * please see {@link com.google.common.collect.testing.CollectionTestSuiteBuilder}.
 *
 * @author Jared Levy
 */
@GwtCompatible

import java.util.NavigableSet;
import java.util.Optional;
import java.util.OptionalDouble;
import java.util.OptionalInt;
import java.util.OptionalLong;
import java.util.PriorityQueue;
import java.util.Queue;
import java.util.Random;
import java.util.Set;
import java.util.SortedMap;
import java.util.SortedSet;
import java.util.TreeMap;
import java.util.TreeSet;
import java.util.UUID;

import com.google.common.util.concurrent.AbstractFutureBenchmarks.OldAbstractFuture;
import com.google.errorprone.annotations.concurrent.GuardedBy;
import java.util.LinkedList;
import java.util.Queue;
import java.util.concurrent.ArrayBlockingQueue;
import java.util.concurrent.CountDownLatch;
import java.util.concurrent.Executor;
import java.util.concurrent.Future;
import java.util.concurrent.ThreadPoolExecutor;

_config.animationSpeed)},t.show=function(e){void 0===e&&(e=!1);var t=n.default("body"),a=n.default("html");e&&n.default(k).hide(),this._config.controlsidebarSlide?(a.addClass(E),n.default(this._config.target).show().delay(10).queue((function(){t.addClass(D).delay(300).queue((function(){a.removeClass(E),n.default(this).dequeue()})),n.default(this).dequeue()}))):t.addClass(L),this._fixHeight(),this._fixScrollHeight(),n.default(this._element).trigger(n.default.Event("expanded.lte.controlsidebar"))}...

// have been executed. Note that "execution" here refers to kernel execution /
// scheduling of copies, etc. Similar to sync execution, it doesn't guarantee
// that lower level device queues (like GPU streams) have been flushed.
//
// This call may not block for execution of ops enqueued concurrently with this
// call.
TF_CAPI_EXPORT extern void TFE_ExecutorWaitForAllPendingNodes(
    TFE_Executor*, TF_Status* status);

    /**
     * The FTP client configuration.
     */
    protected FTPClientConfig ftpClientConfig;

    /**
     * The queue of FTPClient instances.
     */
    protected final Queue<FTPClient> ftpClientQueue = new ConcurrentLinkedQueue<>();

    /**
     * The active external host.
     */
    protected String activeExternalHost;

    /**

import java.util.Collection;
import java.util.HashMap;
import java.util.HashSet;
import java.util.LinkedHashMap;
import java.util.LinkedHashSet;
import java.util.Map;
import java.util.Queue;
import java.util.Random;
import java.util.Set;
import java.util.SortedMap;
import java.util.TreeSet;
import java.util.concurrent.ConcurrentHashMap;
import java.util.concurrent.ConcurrentMap;

        ResourceHolder(String resourceId, AutoCloseable resource, ReferenceQueue<AutoCloseable> queue) {
            this.resourceId = resourceId;
            this.resourceType = resource.getClass().getSimpleName();
            this.resourceRef = new WeakReference<>(resource);
            this.phantomRef = new PhantomReference<>(resource, queue);
            this.creationTime = System.currentTimeMillis();

     * Constructs a Trans2QueryFSInformationResponse with the specified configuration and information level.
     *
     * @param config the SMB configuration
     * @param informationLevel the file system information level being queried
     */
    public Trans2QueryFSInformationResponse(final Configuration config, final int informationLevel) {
        super(config);
        this.informationLevel = informationLevel;

Há muitos casos em que você deseja executar algumas etapas **antes de iniciar** sua aplicação.

Por exemplo, você pode querer executar **migrações de banco de dados**.

Mas na maioria dos casos, você precisará executar essas etapas apenas **uma vez**.

Portanto, você vai querer ter um **processo único** para executar essas **etapas anteriores** antes de iniciar o aplicativo.