ServiceLoader.Provider (Java SE 9 & JDK 9 ) (original) (raw)

• Type Parameters:
  S - The service type
  All Superinterfaces:
  [Supplier](../../java/util/function/Supplier.html "interface in java.util.function")<S>
  Enclosing class:
  ServiceLoader<S>

public static interface ServiceLoader.Provider
extends Supplier
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.
Since:
9

• • Method Summary

  All Methods Instance Methods Abstract Methods

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

• • Method Detail

     * #### type  
     [Class](../../java/lang/Class.html "class in java.lang")<? extends [S](../../java/util/ServiceLoader.Provider.html "type parameter in ServiceLoader.Provider")> 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()](../../java/util/ServiceLoader.Provider.html#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.  
     Returns:  
     The provider type  
     * #### get  
     [S](../../java/util/ServiceLoader.Provider.html "type parameter in ServiceLoader.Provider") get​()  
     Returns an instance of the provider.  
     Specified by:  
     `[get](../../java/util/function/Supplier.html#get--)` in interface `[Supplier](../../java/util/function/Supplier.html "interface in java.util.function")<[S](../../java/util/ServiceLoader.Provider.html "type parameter in ServiceLoader.Provider")>`  
     Returns:  
     An instance of the provider.  
     Throws:  
     `[ServiceConfigurationError](../../java/util/ServiceConfigurationError.html "class in java.util")` \- 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.

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