Make some private classes final.

RELNOTES=n/a
PiperOrigin-RevId: 784189028

Author: cpovirk

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

@@ -251,7 +251,7 @@ public void remove() {
     return iterator.next();
   }
 
-  private static class EntryComparator<K extends @Nullable Object, V extends @Nullable Object>
+  private static final class EntryComparator<K extends @Nullable Object, V extends @Nullable Object>
       implements Comparator<Entry<K, V>> {
     final @Nullable Comparator<? super K> keyComparator;
 

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

@@ -227,7 +227,7 @@ public static Set<Feature<?>> computeCommonDerivedCollectionFeatures(
     return derivedFeatures;
   }
 
-  private static class ReserializedMapGenerator<K, V> implements TestMapGenerator<K, V> {
+  private static final class ReserializedMapGenerator<K, V> implements TestMapGenerator<K, V> {
     private final OneSizeTestContainerGenerator<Map<K, V>, Entry<K, V>> mapGenerator;
 
     ReserializedMapGenerator(OneSizeTestContainerGenerator<Map<K, V>, Entry<K, V>> mapGenerator) {

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

@@ -140,7 +140,7 @@ public Colliders() {
     }
   }
 
-  private static class Collider {
+  private static final class Collider {
     final int value;
 
     Collider(int value) {

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

@@ -59,7 +59,7 @@ public void testInverseSerialization() {
     assertSame(copy.forward, copy.backward.inverse());
   }
 
-  private static class BiMapPair<K, V> implements Serializable {
+  private static final class BiMapPair<K, V> implements Serializable {
     final BiMap<K, V> forward;
     final BiMap<V, K> backward;
 

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

@@ -112,7 +112,7 @@ Set<Feature<?>> computeMultimapGetFeatures(Set<Feature<?>> multimapFeatures) {
     return derivedFeatures;
   }
 
-  private static class MultimapGetGenerator<K, V>
+  private static final class MultimapGetGenerator<K, V>
       extends MultimapTestSuiteBuilder.MultimapGetGenerator<K, V, ListMultimap<K, V>>
       implements TestListGenerator<V> {
     MultimapGetGenerator(
@@ -126,7 +126,7 @@ public List<V> create(Object... elements) {
     }
   }
 
-  private static class MultimapAsMapGetGenerator<K, V>
+  private static final class MultimapAsMapGetGenerator<K, V>
       extends MultimapTestSuiteBuilder.MultimapAsMapGetGenerator<K, V, ListMultimap<K, V>>
       implements TestListGenerator<V> {
     MultimapAsMapGetGenerator(

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

@@ -310,7 +310,7 @@ Set<Feature<?>> computeMultimapAsMapGetFeatures(Set<Feature<?>> multimapFeatures
     return derivedFeatures;
   }
 
-  private static class AsMapGenerator<K, V, M extends Multimap<K, V>>
+  private static final class AsMapGenerator<K, V, M extends Multimap<K, V>>
       implements TestMapGenerator<K, Collection<V>>, DerivedGenerator {
     private final OneSizeTestContainerGenerator<M, Entry<K, V>> multimapGenerator;
 
@@ -634,7 +634,7 @@ public Collection<V> create(Object... elements) {
     }
   }
 
-  private static class ReserializedMultimapGenerator<K, V, M extends Multimap<K, V>>
+  private static final class ReserializedMultimapGenerator<K, V, M extends Multimap<K, V>>
       implements TestMultimapGenerator<K, V, M> {
     private final OneSizeTestContainerGenerator<M, Entry<K, V>> multimapGenerator;
 

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

@@ -107,7 +107,7 @@ TestSuite computeEntriesTestSuite(
         .createTestSuite();
   }
 
-  private static class EntriesGenerator<K, V>
+  private static final class EntriesGenerator<K, V>
       extends MultimapTestSuiteBuilder.EntriesGenerator<K, V, SetMultimap<K, V>>
       implements TestSetGenerator<Entry<K, V>> {
 

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

@@ -265,7 +265,7 @@ private boolean hasInstanceMethodToTestNulls(Class<?> c, Visibility visibility)
    * <pre>
    * public class FooTest {
    *
-   *   private static class FooFactoryForTest {
+   *   private static final class FooFactoryForTest {
    *     public static Foo create(String a, String b, int c, boolean d) {
    *       return Foo.builder()
    *           .setA(a)

android/guava-testlib/src/com/google/common/util/concurrent/testing/TestingExecutors.java

@@ -151,7 +151,7 @@ public ListenableScheduledFuture<?> scheduleWithFixedDelay(
       return NeverScheduledFuture.create();
     }
 
-    private static class NeverScheduledFuture<V> extends AbstractFuture<V>
+    private static final class NeverScheduledFuture<V> extends AbstractFuture<V>
         implements ListenableScheduledFuture<V> {
 
       static <V> NeverScheduledFuture<V> create() {

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

@@ -149,7 +149,7 @@ public String toString() {
     return new ForMapWithDefault<>(map, defaultValue);
   }
 
-  private static class FunctionForMapNoDefault<
+  private static final class FunctionForMapNoDefault<
           K extends @Nullable Object, V extends @Nullable Object>
       implements Function<K, V>, Serializable {
     final Map<K, V> map;
@@ -189,7 +189,8 @@ public String toString() {
     @GwtIncompatible @J2ktIncompatible private static final long serialVersionUID = 0;
   }
 
-  private static class ForMapWithDefault<K extends @Nullable Object, V extends @Nullable Object>
+  private static final class ForMapWithDefault<
+          K extends @Nullable Object, V extends @Nullable Object>
       implements Function<K, V>, Serializable {
     final Map<K, ? extends V> map;
     @ParametricNullness final V defaultValue;
@@ -250,7 +251,7 @@ Function<A, C> compose(Function<B, C> g, Function<A, ? extends B> f) {
     return new FunctionComposition<>(g, f);
   }
 
-  private static class FunctionComposition<
+  private static final class FunctionComposition<
           A extends @Nullable Object, B extends @Nullable Object, C extends @Nullable Object>
       implements Function<A, C>, Serializable {
     private final Function<B, C> g;
@@ -308,7 +309,7 @@ public String toString() {
   /**
    * @see Functions#forPredicate
    */
-  private static class PredicateFunction<T extends @Nullable Object>
+  private static final class PredicateFunction<T extends @Nullable Object>
       implements Function<T, Boolean>, Serializable {
     private final Predicate<T> predicate;
 
@@ -358,7 +359,7 @@ public String toString() {
     return new ConstantFunction<>(value);
   }
 
-  private static class ConstantFunction<E extends @Nullable Object>
+  private static final class ConstantFunction<E extends @Nullable Object>
       implements Function<@Nullable Object, E>, Serializable {
     @ParametricNullness private final E value;
 
@@ -411,7 +412,8 @@ public String toString() {
   /**
    * @see Functions#forSupplier
    */
-  private static class SupplierFunction<F extends @Nullable Object, T extends @Nullable Object>
+  private static final class SupplierFunction<
+          F extends @Nullable Object, T extends @Nullable Object>
       implements Function<F, T>, Serializable {
 
     private final Supplier<T> supplier;