Module java.base
Package java.util

Interface ServiceLoader.Provider<S>

Type Parameters:
S - The service type
All Superinterfaces:
Enclosing class:

public static interface ServiceLoader.Provider<S>
extends Supplier<S>
Represents a service provider located by ServiceLoader.

When using a loader's stream() method then the elements are of type Provider. This allows processing to select or filter on the provider class without instantiating the provider.

  • Method Summary

    Modifier and Type Method Description
    S get()
    Returns an instance of the provider.
    Class<? extends S> type()
    Returns the provider type.
  • Method Details

    • type

      Class<? extends S> type()
      Returns the provider type. There is no guarantee that this type is accessible or that it has a public no-args constructor. The get() method should be used to obtain the provider instance.

      When a module declares that the provider class is created by a provider factory then this method returns the return type of its public static "provider()" method.

      The provider type
    • get

      S get()
      Returns an instance of the provider.
      Specified by:
      get in interface Supplier<S>
      An instance of the provider.
      ServiceConfigurationError - If the service provider cannot be instantiated, or in the case of a provider factory, the public static "provider()" method returns null or throws an error or exception. The ServiceConfigurationError will carry an appropriate cause where possible.