* by multiple concurrent threads.
 *
 * @param <K> the type of the cache's keys, which are not permitted to be null
 * @param <V> the type of the cache's values, which are not permitted to be null
 * @author Charles Fry
 * @since 10.0
 */
@DoNotMock("Use CacheBuilder.newBuilder().build()")
@GwtCompatible
public interface Cache<K, V> {

  /**

 *
 * <p><b>Warning:</b> Unlike {@code Multiset}, entries whose values are zero are not automatically
 * removed from the map. Instead they must be removed manually with {@link #removeAllZeros}.
 *
 * @author Charles Fry
 * @since 11.0
 */
@GwtCompatible
public final class AtomicLongMap<K> implements Serializable {
  private final ConcurrentHashMap<K, Long> map;

  private AtomicLongMap(ConcurrentHashMap<K, Long> map) {

 * LoadingCache#get(Object)}, {@link LoadingCache#getUnchecked(Object)}, {@link Cache#get(Object,
 * Callable)}, or {@link LoadingCache#getAll(Iterable)}.
 *
 * @author Charles Fry
 * @since 10.0
 */
@GwtCompatible
public final class CacheStats {
  private final long hitCount;
  private final long missCount;
  private final long loadSuccessCount;
  private final long loadExceptionCount;

 * LoadingCache#get(Object)}, {@link LoadingCache#getUnchecked(Object)}, {@link Cache#get(Object,
 * Callable)}, or {@link LoadingCache#getAll(Iterable)}.
 *
 * @author Charles Fry
 * @since 10.0
 */
@GwtCompatible
public final class CacheStats {
  private final long hitCount;
  private final long missCount;
  private final long loadSuccessCount;
  private final long loadExceptionCount;

import org.jspecify.annotations.NullUnmarked;
import org.jspecify.annotations.Nullable;

/**
 * LocalCache emulation for GWT.
 *
 * @param <K> the base key type
 * @param <V> the base value type
 * @author Charles Fry
 * @author Jon Donovan
 */
@NullUnmarked
@SuppressWarnings("nullness") // TODO: b/384945891 - Remove after fixing checker.
public class LocalCache<K, V> implements ConcurrentMap<K, V> {

import java.lang.ref.Reference;
import java.util.concurrent.atomic.AtomicReferenceArray;
import junit.framework.TestCase;
import org.jspecify.annotations.NullUnmarked;

/**
 * @author Charles Fry
 */
@SuppressWarnings("deprecation") // many tests of deprecated methods
@NullUnmarked
public class MapMakerInternalMapTest extends TestCase {

  static final int SMALL_MAX_SIZE = DRAIN_THRESHOLD * 5;

import java.lang.ref.Reference;
import java.util.concurrent.atomic.AtomicReferenceArray;
import junit.framework.TestCase;
import org.jspecify.annotations.NullUnmarked;

/**
 * @author Charles Fry
 */
@SuppressWarnings("deprecation") // many tests of deprecated methods
@NullUnmarked
public class MapMakerInternalMapTest extends TestCase {

  static final int SMALL_MAX_SIZE = DRAIN_THRESHOLD * 5;

 *     normally {@code Object} unless it is constrained by using a method like {@link
 *     #removalListener}. Cache values may not be null.
 * @author Charles Fry
 * @author Kevin Bourrillion
 * @since 10.0
 */
@GwtCompatible
public final class CacheBuilder<K, V> {
  private static final int DEFAULT_INITIAL_CAPACITY = 16;

 *     normally {@code Object} unless it is constrained by using a method like {@link
 *     #removalListener}. Cache values may not be null.
 * @author Charles Fry
 * @author Kevin Bourrillion
 * @since 10.0
 */
@GwtCompatible
public final class CacheBuilder<K, V> {
  private static final int DEFAULT_INITIAL_CAPACITY = 16;

import junit.framework.Test;
import junit.framework.TestCase;
import junit.framework.TestSuite;
import org.jspecify.annotations.NullUnmarked;
import org.jspecify.annotations.Nullable;

/**
 * @author Charles Fry
 */
@SuppressWarnings("GuardedBy") // TODO(b/35466881): Fix or suppress.
@NullUnmarked
public class LocalCacheTest extends TestCase {
  @AndroidIncompatible