ClusterSingleton

java.lang.Object
- akka.cluster.typed.ClusterSingleton

All Implemented Interfaces:

Extension
```
public abstract class ClusterSingleton
extends java.lang.Object
implements Extension
```
This class is not intended for user extension other than for test purposes (e.g. stub implementation). More methods may be added in the future and that may break such implementations.

Constructor Summary

Constructors
Constructor Description

ClusterSingleton()

Method Summary

All Methods Static Methods Instance Methods Abstract Methods Concrete Methods
Modifier and Type	Method	Description
`static T`	`apply(ActorSystem<?> system)`
`static ClusterSingleton`	`createExtension(ActorSystem<?> system)`
`static boolean`	`equals(java.lang.Object other)`
`static ClusterSingleton`	`get(ActorSystem<?> system)`	Java API:
`static int`	`hashCode()`
`static ExtensionId<T>`	`id()`
`abstract <M> ActorRef<M>`	`init(SingletonActor<M> singleton)`	Start if needed and provide a proxy to a named singleton

Methods inherited from class java.lang.Object
clone, equals, finalize, getClass, hashCode, notify, notifyAll, toString, wait, wait, wait

- Constructor Detail
  - ClusterSingleton
```
public ClusterSingleton()
```
- Method Detail
  - createExtension
```
public static ClusterSingleton createExtension(ActorSystem<?> system)
```
  - get
```
public static ClusterSingleton get(ActorSystem<?> system)
```
    Java API:
  - apply
```
public static final T apply(ActorSystem<?> system)
```
  - hashCode
```
public static final int hashCode()
```
  - equals
```
public static final boolean equals(java.lang.Object other)
```
  - id
```
public static ExtensionId<T> id()
```
  - init
```
public abstract <M> ActorRef<M> init(SingletonActor<M> singleton)
```
    Start if needed and provide a proxy to a named singleton
    If there already is a manager running for the given singletonName on this node, no additional manager is started. If there already is a proxy running for the given singletonName on this node, an ActorRef to that is returned.
    
    Returns:
    
    A proxy actor that can be used to communicate with the singleton in the cluster