| Package | Description | 
|---|---|
| com.google.common.collect | This package contains generic collection interfaces and implementations, and
 other utilities for working with collections. | 
| Modifier and Type | Method and Description | 
|---|---|
| static <E> Sets.SetView<E> | Sets. difference(Set<E> set1,
          Set<?> set2)Returns an unmodifiable view of the difference of two sets. | 
| static <E> Sets.SetView<E> | Sets. intersection(Set<E> set1,
            Set<?> set2)Returns an unmodifiable view of the intersection of two sets. | 
| static <E> Sets.SetView<E> | Sets. symmetricDifference(Set<? extends E> set1,
                   Set<? extends E> set2)Returns an unmodifiable view of the symmetric difference of two
 sets. | 
| static <E> Sets.SetView<E> | Sets. union(Set<? extends E> set1,
     Set<? extends E> set2)Returns an unmodifiable view of the union of two sets. | 
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