| Modifier and Type | Class and Description |
|---|---|
| public class | ConcurrentHashMap<
the type of keys maintained by this map K, the type of mapped values V>A hash table supporting full concurrency of retrievals and high expected concurrency for updates. |
| public class | LongAdder
One or more variables that together maintain an initially zero
|
| pack-priv abstract class | Striped64
A package-local class holding common representation and mechanics for classes supporting dynamic striping on 64bit values. |
| public class | ThreadLocalRandom
A random number generator isolated to the current thread. |