Apply UnnecessaryParentheses.

android/guava-testlib/src/com/google/common/collect/testing/MapInterfaceTest.java

@@ -687,7 +687,7 @@ public void testEntrySetRetainAll() {
     Set<Entry<K, V>> entriesToRetain =
         singleton(mapEntry(originalEntry.getKey(), originalEntry.getValue()));
     if (supportsRemove) {
-      boolean shouldRemove = (entrySet.size() > entriesToRetain.size());
+      boolean shouldRemove = entrySet.size() > entriesToRetain.size();
       boolean didRemove = entrySet.retainAll(entriesToRetain);
       assertEquals(shouldRemove, didRemove);
       assertEquals(entriesToRetain.size(), map.size());

android/guava-testlib/src/com/google/common/collect/testing/google/SortedMultisetTestSuiteBuilder.java

@@ -274,7 +274,7 @@ private TestSuite createReserializedSuite(SortedMultisetTestSuiteBuilder<E> pare
             new ForwardingTestMultisetGenerator<E>(delegate) {
               @Override
               public SortedMultiset<E> create(Object... entries) {
-                return SerializableTester.reserialize(((SortedMultiset<E>) super.create(entries)));
+                return SerializableTester.reserialize((SortedMultiset<E>) super.create(entries));
               }
             })
         .named(parentBuilder.getName() + " reserialized")

android/guava-testlib/src/com/google/common/collect/testing/testers/SetHashCodeTester.java

@@ -41,7 +41,7 @@ public class SetHashCodeTester<E> extends AbstractSetTester<E> {
   public void testHashCode() {
     int expectedHashCode = 0;
     for (E element : getSampleElements()) {
-      expectedHashCode += ((element == null) ? 0 : element.hashCode());
+      expectedHashCode += (element == null) ? 0 : element.hashCode();
     }
     assertEquals(
         "A Set's hashCode() should be the sum of those of its elements.",
@@ -55,7 +55,7 @@ public void testHashCode_containingNull() {
     Collection<E> elements = getSampleElements(getNumElements() - 1);
     int expectedHashCode = 0;
     for (E element : elements) {
-      expectedHashCode += ((element == null) ? 0 : element.hashCode());
+      expectedHashCode += (element == null) ? 0 : element.hashCode();
     }
 
     elements.add(null);

android/guava-tests/benchmark/com/google/common/base/StopwatchBenchmark.java

@@ -46,7 +46,7 @@ long manual(int reps) {
     for (int i = 0; i < reps; i++) {
       long start = System.nanoTime();
       // here is where you would do something
-      total += (System.nanoTime() - start);
+      total += System.nanoTime() - start;
     }
     return total;
   }

android/guava-tests/benchmark/com/google/common/hash/HashCodeBenchmark.java

@@ -70,7 +70,7 @@ boolean doEquals(byte[] a, byte[] b) {
         }
         boolean areEqual = true;
         for (int i = 0; i < a.length; i++) {
-          areEqual &= (a[i] == b[i]);
+          areEqual &= a[i] == b[i];
         }
         return areEqual;
       }
@@ -85,7 +85,7 @@ boolean doEquals(byte[] a, byte[] b) {
         for (int i = 0; i < a.length; i++) {
           result = (byte) (result | a[i] ^ b[i]);
         }
-        return (result == 0);
+        return result == 0;
       }
     },
     XORING_TO_INT {
@@ -98,7 +98,7 @@ boolean doEquals(byte[] a, byte[] b) {
         for (int i = 0; i < a.length; i++) {
           result |= a[i] ^ b[i];
         }
-        return (result == 0);
+        return result == 0;
       }
     },
     MESSAGE_DIGEST_IS_EQUAL {

android/guava-tests/benchmark/com/google/common/util/concurrent/MonitorBenchmark.java

@@ -46,7 +46,7 @@ public class MonitorBenchmark {
   @SuppressWarnings("unchecked")
   void setUp() throws Exception {
     String prefix =
-        (useMonitor ? "com.google.common.util.concurrent.MonitorBased" : "java.util.concurrent.");
+        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);

android/guava-tests/test/com/google/common/cache/CacheLoadingTest.java

@@ -1941,7 +1941,7 @@ public String load(String key) throws InterruptedException {
       // doConcurrentGet alternates between calling getUnchecked and calling get, but an unchecked
       // exception thrown by the loader is always wrapped as an UncheckedExecutionException.
       assertThat(result.get(i)).isInstanceOf(UncheckedExecutionException.class);
-      assertThat(((UncheckedExecutionException) result.get(i))).hasCauseThat().isSameInstanceAs(e);
+      assertThat((UncheckedExecutionException) result.get(i)).hasCauseThat().isSameInstanceAs(e);
     }
 
     // subsequent calls should call the loader again, not get the old exception

android/guava-tests/test/com/google/common/cache/CacheTesting.java

@@ -128,7 +128,7 @@ static <K, V> LocalCache<K, V> toLocalCache(Cache<K, V> cache) {
    * without throwing an exception.
    */
   static boolean hasLocalCache(Cache<?, ?> cache) {
-    return (checkNotNull(cache) instanceof LocalLoadingCache);
+    return checkNotNull(cache) instanceof LocalLoadingCache;
   }
 
   static void drainRecencyQueues(Cache<?, ?> cache) {

android/guava-tests/test/com/google/common/cache/LocalCacheTest.java

@@ -3055,7 +3055,7 @@ public int hashCode() {
 
     @Override
     public boolean equals(@Nullable Object o) {
-      return (o instanceof SerializableCacheLoader);
+      return o instanceof SerializableCacheLoader;
     }
   }
 
@@ -3071,7 +3071,7 @@ public int hashCode() {
 
     @Override
     public boolean equals(@Nullable Object o) {
-      return (o instanceof SerializableRemovalListener);
+      return o instanceof SerializableRemovalListener;
     }
   }
 
@@ -3088,7 +3088,7 @@ public int hashCode() {
 
     @Override
     public boolean equals(@Nullable Object o) {
-      return (o instanceof SerializableTicker);
+      return o instanceof SerializableTicker;
     }
   }
 
@@ -3105,7 +3105,7 @@ public int hashCode() {
 
     @Override
     public boolean equals(@Nullable Object o) {
-      return (o instanceof SerializableWeigher);
+      return o instanceof SerializableWeigher;
     }
   }
 }

android/guava-tests/test/com/google/common/collect/ConcurrentHashMultisetBasherTest.java

@@ -138,15 +138,15 @@ public int[] call() throws Exception {
             {
               int newValue = random.nextInt(3);
               int oldValue = multiset.setCount(key, newValue);
-              deltas[keyIndex] += (newValue - oldValue);
+              deltas[keyIndex] += newValue - oldValue;
               break;
             }
           case SET_COUNT_IF:
             {
               int newValue = random.nextInt(3);
               int oldValue = multiset.count(key);
               if (multiset.setCount(key, oldValue, newValue)) {
-                deltas[keyIndex] += (newValue - oldValue);
+                deltas[keyIndex] += newValue - oldValue;
               }
               break;
             }

android/guava-tests/test/com/google/common/hash/BloomFilterTest.java

@@ -409,7 +409,7 @@ public void funnel(Long value, PrimitiveSink into) {
 
     @Override
     public boolean equals(@Nullable Object object) {
-      return (object instanceof CustomFunnel);
+      return object instanceof CustomFunnel;
     }
 
     @Override

android/guava-tests/test/com/google/common/hash/Crc32cHashFunctionTest.java

@@ -164,7 +164,7 @@ public void testCrc32cByteTable() {
       int crc = i;
       for (int j = 7; j >= 0; j--) {
         int mask = -(crc & 1);
-        crc = ((crc >>> 1) ^ (CRC32C_GENERATOR_FLIPPED & mask));
+        crc = (crc >>> 1) ^ (CRC32C_GENERATOR_FLIPPED & mask);
       }
       expected[i] = crc;
     }

android/guava-tests/test/com/google/common/hash/HashTestUtils.java

@@ -306,7 +306,7 @@ static void checkNoFunnels(HashFunction function) {
         // test whether the hash values have same output bits
         same |= ~(hash1 ^ hash2);
         // test whether the hash values have different output bits
-        diff |= (hash1 ^ hash2);
+        diff |= hash1 ^ hash2;
 
         count++;
         // check whether we've exceeded the probabilistically

android/guava-tests/test/com/google/common/math/IntMathTest.java

@@ -299,7 +299,7 @@ public void testSqrtExactMatchesFloorOrThrows() {
     for (int x : POSITIVE_INTEGER_CANDIDATES) {
       int floor = IntMath.sqrt(x, FLOOR);
       // We only expect an exception if x was not a perfect square.
-      boolean isPerfectSquare = (floor * floor == x);
+      boolean isPerfectSquare = floor * floor == x;
       try {
         assertEquals(floor, IntMath.sqrt(x, UNNECESSARY));
         assertTrue(isPerfectSquare);

android/guava-tests/test/com/google/common/math/LongMathTest.java

@@ -338,7 +338,7 @@ public void testSqrtExactMatchesFloorOrThrows() {
     for (long x : POSITIVE_LONG_CANDIDATES) {
       long sqrtFloor = LongMath.sqrt(x, FLOOR);
       // We only expect an exception if x was not a perfect square.
-      boolean isPerfectSquare = (sqrtFloor * sqrtFloor == x);
+      boolean isPerfectSquare = sqrtFloor * sqrtFloor == x;
       try {
         assertEquals(sqrtFloor, LongMath.sqrt(x, UNNECESSARY));
         assertTrue(isPerfectSquare);

android/guava-tests/test/com/google/common/net/HostAndPortTest.java

@@ -121,7 +121,7 @@ private static void checkFromStringCase(
     assertNotNull(expectHost);
 
     // Apply withDefaultPort(), yielding hp2.
-    boolean badDefaultPort = (defaultPort < 0 || defaultPort > 65535);
+    boolean badDefaultPort = defaultPort < 0 || defaultPort > 65535;
     HostAndPort hp2 = null;
     try {
       hp2 = hp.withDefaultPort(defaultPort);

android/guava-tests/test/com/google/common/util/concurrent/GeneratedMonitorTest.java

@@ -424,7 +424,7 @@ private static void addTests(
           suite.addTest(new GeneratedMonitorTest(method, scenario, fair, timeout, expectedOutcome));
         }
       } else {
-        Timeout implicitTimeout = (isTryEnter(method) ? Timeout.ZERO : Timeout.MAX);
+        Timeout implicitTimeout = isTryEnter(method) ? Timeout.ZERO : Timeout.MAX;
         if (timeoutsToUse.timeouts.contains(implicitTimeout)) {
           suite.addTest(new GeneratedMonitorTest(method, scenario, fair, null, expectedOutcome));
         }

android/guava-tests/test/com/google/common/util/concurrent/RateLimiterTest.java

@@ -509,7 +509,7 @@ void sleepMillis(int millis) {
 
     void sleepMicros(String caption, long micros) {
       instant += MICROSECONDS.toNanos(micros);
-      events.add(caption + String.format(Locale.ROOT, "%3.2f", (micros / 1000000.0)));
+      events.add(caption + String.format(Locale.ROOT, "%3.2f", micros / 1000000.0));
     }
 
     @Override

android/guava/src/com/google/common/base/Utf8.java

@@ -60,7 +60,7 @@ public static int encodedLength(CharSequence sequence) {
     for (; i < utf16Length; i++) {
       char c = sequence.charAt(i);
       if (c < 0x800) {
-        utf8Length += ((0x7f - c) >>> 31); // branch free!
+        utf8Length += (0x7f - c) >>> 31; // branch free!
       } else {
         utf8Length += encodedLengthGeneral(sequence, i);
         break;

android/guava/src/com/google/common/cache/LocalCache.java

@@ -1679,9 +1679,9 @@ static int rehash(int h) {
     // using variant of single-word Wang/Jenkins hash.
     // TODO(kevinb): use Hashing/move this to Hashing?
     h += (h << 15) ^ 0xffffcd7d;
-    h ^= (h >>> 10);
-    h += (h << 3);
-    h ^= (h >>> 6);
+    h ^= h >>> 10;
+    h += h << 3;
+    h ^= h >>> 6;
     h += (h << 2) + (h << 14);
     return h ^ (h >>> 16);
   }

android/guava/src/com/google/common/collect/AbstractMapBasedMultimap.java

@@ -515,7 +515,7 @@ public boolean addAll(Collection<? extends V> collection) {
       boolean changed = delegate.addAll(collection);
       if (changed) {
         int newSize = delegate.size();
-        totalSize += (newSize - oldSize);
+        totalSize += newSize - oldSize;
         if (oldSize == 0) {
           addToMap();
         }
@@ -566,7 +566,7 @@ public boolean removeAll(Collection<?> c) {
       boolean changed = delegate.removeAll(c);
       if (changed) {
         int newSize = delegate.size();
-        totalSize += (newSize - oldSize);
+        totalSize += newSize - oldSize;
         removeIfEmpty();
       }
       return changed;
@@ -579,7 +579,7 @@ public boolean retainAll(Collection<?> c) {
       boolean changed = delegate.retainAll(c);
       if (changed) {
         int newSize = delegate.size();
-        totalSize += (newSize - oldSize);
+        totalSize += newSize - oldSize;
         removeIfEmpty();
       }
       return changed;
@@ -613,7 +613,7 @@ public boolean removeAll(Collection<?> c) {
       boolean changed = Sets.removeAllImpl((Set<V>) delegate, c);
       if (changed) {
         int newSize = delegate.size();
-        totalSize += (newSize - oldSize);
+        totalSize += newSize - oldSize;
         removeIfEmpty();
       }
       return changed;
@@ -776,7 +776,7 @@ public boolean addAll(int index, Collection<? extends V> c) {
       boolean changed = getListDelegate().addAll(index, c);
       if (changed) {
         int newSize = getDelegate().size();
-        totalSize += (newSize - oldSize);
+        totalSize += newSize - oldSize;
         if (oldSize == 0) {
           addToMap();
         }

android/guava/src/com/google/common/collect/CompactHashing.java

@@ -40,7 +40,7 @@ private CompactHashing() {}
   private static final int HASH_TABLE_BITS_MAX_BITS = 5;
 
   /** Use high bits of metadata for modification count. */
-  static final int MODIFICATION_COUNT_INCREMENT = (1 << HASH_TABLE_BITS_MAX_BITS);
+  static final int MODIFICATION_COUNT_INCREMENT = 1 << HASH_TABLE_BITS_MAX_BITS;
 
   /** Bitmask that selects the low bits of metadata to get hashTableBits. */
   static final int HASH_TABLE_BITS_MASK = (1 << HASH_TABLE_BITS_MAX_BITS) - 1;

android/guava/src/com/google/common/collect/Cut.java

@@ -337,7 +337,7 @@ Cut<C> withLowerBoundType(BoundType boundType, DiscreteDomain<C> domain) {
           return this;
         case OPEN:
           C previous = domain.previous(endpoint);
-          return (previous == null) ? Cut.<C>belowAll() : new AboveValue<C>(previous);
+          return (previous == null) ? Cut.belowAll() : new AboveValue<>(previous);
       }
       throw new AssertionError();
     }
@@ -347,7 +347,7 @@ Cut<C> withUpperBoundType(BoundType boundType, DiscreteDomain<C> domain) {
       switch (boundType) {
         case CLOSED:
           C previous = domain.previous(endpoint);
-          return (previous == null) ? Cut.<C>aboveAll() : new AboveValue<C>(previous);
+          return (previous == null) ? Cut.aboveAll() : new AboveValue<>(previous);
         case OPEN:
           return this;
       }
@@ -418,7 +418,7 @@ Cut<C> withLowerBoundType(BoundType boundType, DiscreteDomain<C> domain) {
           return this;
         case CLOSED:
           C next = domain.next(endpoint);
-          return (next == null) ? Cut.<C>belowAll() : belowValue(next);
+          return (next == null) ? Cut.belowAll() : belowValue(next);
       }
       throw new AssertionError();
     }
@@ -428,7 +428,7 @@ Cut<C> withUpperBoundType(BoundType boundType, DiscreteDomain<C> domain) {
       switch (boundType) {
         case OPEN:
           C next = domain.next(endpoint);
-          return (next == null) ? Cut.<C>aboveAll() : belowValue(next);
+          return (next == null) ? Cut.aboveAll() : belowValue(next);
         case CLOSED:
           return this;
       }
@@ -458,7 +458,7 @@ C greatestValueBelow(DiscreteDomain<C> domain) {
     @Override
     Cut<C> canonical(DiscreteDomain<C> domain) {
       C next = leastValueAbove(domain);
-      return (next != null) ? belowValue(next) : Cut.<C>aboveAll();
+      return (next != null) ? belowValue(next) : Cut.aboveAll();
     }
 
     @Override

android/guava/src/com/google/common/collect/FilteredEntryMultimap.java

@@ -21,6 +21,8 @@
 import static com.google.common.base.Predicates.not;
 import static com.google.common.collect.CollectPreconditions.checkNonnegative;
 import static com.google.common.collect.Maps.immutableEntry;
+import static java.util.Collections.emptyList;
+import static java.util.Collections.emptySet;
 import static java.util.Collections.unmodifiableList;
 import static java.util.Collections.unmodifiableSet;
 
@@ -31,7 +33,6 @@
 import com.google.j2objc.annotations.WeakOuter;
 import java.util.ArrayList;
 import java.util.Collection;
-import java.util.Collections;
 import java.util.Iterator;
 import java.util.LinkedHashSet;
 import java.util.List;
@@ -111,9 +112,7 @@ public Collection<V> removeAll(@Nullable Object key) {
   @SuppressWarnings("EmptyList") // ImmutableList doesn't support nullable element types
   Collection<V> unmodifiableEmptyCollection() {
     // These return false, rather than throwing a UOE, on remove calls.
-    return (unfiltered instanceof SetMultimap)
-        ? Collections.<V>emptySet()
-        : Collections.<V>emptyList();
+    return (unfiltered instanceof SetMultimap) ? emptySet() : emptyList();
   }
 
   @Override

android/guava/src/com/google/common/collect/HashBiMap.java

@@ -947,7 +947,7 @@ public V setValue(@ParametricNullness V value) {
   @Override
   public BiMap<V, K> inverse() {
     BiMap<V, K> result = inverse;
-    return (result == null) ? inverse = new Inverse<K, V>(this) : result;
+    return (result == null) ? inverse = new Inverse<>(this) : result;
   }
 
   private static final class Inverse<K extends @Nullable Object, V extends @Nullable Object>