Uses of Class java.util.concurrent.ConcurrentHashMap.KeySetView (Java SE 12 & JDK 12 )

## Uses of Class
java.util.concurrent.ConcurrentHashMap.KeySetView

- Packages that use ConcurrentHashMap.KeySetView
  Package | Description
  --- | ---
  java.util.concurrent | Utility classes commonly useful in concurrent programming.

- - ### Uses of ConcurrentHashMap.KeySetView in java.util.concurrent

    Methods in java.util.concurrent that return ConcurrentHashMap.KeySetView
    Modifier and Type | Method | Description
    --- | --- | ---
    `ConcurrentHashMap.KeySetView<K,​V>` | ConcurrentHashMap.`keySet()` | Returns a `Set` view of the keys contained in this map.
    `ConcurrentHashMap.KeySetView<K,​V>` | ConcurrentHashMap.`keySet​(V mappedValue)` | Returns a `Set` view of the keys in this map, using the given common mapped value for any additions (i.e., `Collection.add(E)` and `Collection.addAll(Collection)`).
    `static <K> ConcurrentHashMap.KeySetView<K,​Boolean>` | ConcurrentHashMap.`newKeySet()` | Creates a new `Set` backed by a ConcurrentHashMap from the given type to `Boolean.TRUE`.
    `static <K> ConcurrentHashMap.KeySetView<K,​Boolean>` | ConcurrentHashMap.`newKeySet​(int initialCapacity)` | Creates a new `Set` backed by a ConcurrentHashMap from the given type to `Boolean.TRUE`.