BiFunction (Java SE 10 & JDK 10 ) (original) (raw)

• Type Parameters:
  T - the type of the first argument to the function
  U - the type of the second argument to the function
  R - the type of the result of the function
  All Known Subinterfaces:
  [BinaryOperator](../../../java/util/function/BinaryOperator.html "interface in java.util.function")<T>
  Functional Interface:
  This is a functional interface and can therefore be used as the assignment target for a lambda expression or method reference.

@FunctionalInterface
public interface BiFunction<T,U,R>
Since:
1.8
See Also:
Function

• • Method Summary

  All Methods Instance Methods Abstract Methods Default Methods

  Modifier and Type	Method	Description
  default BiFunction<T,U,V>	andThen​(Function<? super R,? extends V> after)	Returns a composed function that first applies this function to its input, and then applies the after function to the result.
  R	apply​(T t,U u)	Applies this function to the given arguments.

• • Method Detail

     * #### apply  
     [R](../../../java/util/function/BiFunction.html "type parameter in BiFunction") apply​([T](../../../java/util/function/BiFunction.html "type parameter in BiFunction") t,  
             [U](../../../java/util/function/BiFunction.html "type parameter in BiFunction") u)  
     Applies this function to the given arguments.  
     Parameters:  
     `t` \- the first function argument  
     `u` \- the second function argument  
     Returns:  
     the function result  
     * #### andThen  
     default <V> [BiFunction](../../../java/util/function/BiFunction.html "interface in java.util.function")<[T](../../../java/util/function/BiFunction.html "type parameter in BiFunction"),[U](../../../java/util/function/BiFunction.html "type parameter in BiFunction"),V> andThen​([Function](../../../java/util/function/Function.html "interface in java.util.function")<? super [R](../../../java/util/function/BiFunction.html "type parameter in BiFunction"),? extends V> after)  
     Returns a composed function that first applies this function to its input, and then applies the `after` function to the result. If evaluation of either function throws an exception, it is relayed to the caller of the composed function.  
     Type Parameters:  
     `V` \- the type of output of the `after` function, and of the composed function  
     Parameters:  
     `after` \- the function to apply after this function is applied  
     Returns:  
     a composed function that first applies this function and then applies the `after` function  
     Throws:  
     `[NullPointerException](../../../java/lang/NullPointerException.html "class in java.lang")` \- if after is null

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