Uses of Package
java8.util.function

Packages that use java8.util.function

Package	Description
java8.lang	Provides classes for some of the new static methods that were added in Java 8.
java8.util	Provides some of the new java.util classes and implementations of static and default interface methods added in Java 8 and, in addition, the JEP 269: Convenience Factory Methods for Collections that were introduced in Java 9.
java8.util.concurrent	The Java 7 and Java 8 utility classes commonly used in concurrent programming.
java8.util.function	Functional interfaces provide target types for lambda expressions and method references.
java8.util.stream	Classes to support functional-style operations on streams of elements, such as map-reduce transformations on collections.

Classes in java8.util.function used by java8.lang

Class and Description
Consumer Represents an operation that accepts a single input argument and returns no result.
Predicate Represents a predicate (boolean-valued function) of one argument.

Classes in java8.util.function used by java8.util

Class and Description
BiConsumer Represents an operation that accepts two input arguments and returns no result.
BiFunction Represents a function that accepts two arguments and produces a result.
BinaryOperator Represents an operation upon two operands of the same type, producing a result of the same type as the operands.
Consumer Represents an operation that accepts a single input argument and returns no result.
DoubleBinaryOperator Represents an operation upon two double-valued operands and producing a double-valued result.
DoubleConsumer Represents an operation that accepts a single double-valued argument and returns no result.
DoubleSupplier Represents a supplier of double-valued results.
Function Represents a function that accepts one argument and produces a result.
IntBinaryOperator Represents an operation upon two int-valued operands and producing an int-valued result.
IntConsumer Represents an operation that accepts a single int-valued argument and returns no result.
IntFunction Represents a function that accepts an int-valued argument and produces a result.
IntSupplier Represents a supplier of int-valued results.
IntToDoubleFunction Represents a function that accepts an int-valued argument and produces a double-valued result.
IntToLongFunction Represents a function that accepts an int-valued argument and produces a long-valued result.
IntUnaryOperator Represents an operation on a single int-valued operand that produces an int-valued result.
LongBinaryOperator Represents an operation upon two long-valued operands and producing a long-valued result.
LongConsumer Represents an operation that accepts a single long-valued argument and returns no result.
LongSupplier Represents a supplier of long-valued results.
Predicate Represents a predicate (boolean-valued function) of one argument.
Supplier Represents a supplier of results.
ToDoubleFunction Represents a function that produces a double-valued result.
ToIntFunction Represents a function that produces an int-valued result.
ToLongFunction Represents a function that produces a long-valued result.
UnaryOperator Represents an operation on a single operand that produces a result of the same type as its operand.

Classes in java8.util.function used by java8.util.concurrent

Class and Description
BiConsumer Represents an operation that accepts two input arguments and returns no result.
BiFunction Represents a function that accepts two arguments and produces a result.
Function Represents a function that accepts one argument and produces a result.
Predicate Represents a predicate (boolean-valued function) of one argument.

Classes in java8.util.function used by java8.util.function

Class and Description
BiConsumer Represents an operation that accepts two input arguments and returns no result.
BiFunction Represents a function that accepts two arguments and produces a result.
BinaryOperator Represents an operation upon two operands of the same type, producing a result of the same type as the operands.
BiPredicate Represents a predicate (boolean-valued function) of two arguments.
Consumer Represents an operation that accepts a single input argument and returns no result.
DoubleConsumer Represents an operation that accepts a single double-valued argument and returns no result.
DoublePredicate Represents a predicate (boolean-valued function) of one double-valued argument.
DoubleUnaryOperator Represents an operation on a single double-valued operand that produces a double-valued result.
Function Represents a function that accepts one argument and produces a result.
IntConsumer Represents an operation that accepts a single int-valued argument and returns no result.
IntPredicate Represents a predicate (boolean-valued function) of one int-valued argument.
IntUnaryOperator Represents an operation on a single int-valued operand that produces an int-valued result.
LongConsumer Represents an operation that accepts a single long-valued argument and returns no result.
LongPredicate Represents a predicate (boolean-valued function) of one long-valued argument.
LongUnaryOperator Represents an operation on a single long-valued operand that produces a long-valued result.
Predicate Represents a predicate (boolean-valued function) of one argument.
UnaryOperator Represents an operation on a single operand that produces a result of the same type as its operand.

Classes in java8.util.function used by java8.util.stream

Class and Description
BiConsumer Represents an operation that accepts two input arguments and returns no result.
BiFunction Represents a function that accepts two arguments and produces a result.
BinaryOperator Represents an operation upon two operands of the same type, producing a result of the same type as the operands.
Consumer Represents an operation that accepts a single input argument and returns no result.
DoubleBinaryOperator Represents an operation upon two double-valued operands and producing a double-valued result.
DoubleConsumer Represents an operation that accepts a single double-valued argument and returns no result.
DoubleFunction Represents a function that accepts a double-valued argument and produces a result.
DoublePredicate Represents a predicate (boolean-valued function) of one double-valued argument.
DoubleSupplier Represents a supplier of double-valued results.
DoubleToIntFunction Represents a function that accepts a double-valued argument and produces an int-valued result.
DoubleToLongFunction Represents a function that accepts a double-valued argument and produces a long-valued result.
DoubleUnaryOperator Represents an operation on a single double-valued operand that produces a double-valued result.
Function Represents a function that accepts one argument and produces a result.
IntBinaryOperator Represents an operation upon two int-valued operands and producing an int-valued result.
IntConsumer Represents an operation that accepts a single int-valued argument and returns no result.
IntFunction Represents a function that accepts an int-valued argument and produces a result.
IntPredicate Represents a predicate (boolean-valued function) of one int-valued argument.
IntSupplier Represents a supplier of int-valued results.
IntToDoubleFunction Represents a function that accepts an int-valued argument and produces a double-valued result.
IntToLongFunction Represents a function that accepts an int-valued argument and produces a long-valued result.
IntUnaryOperator Represents an operation on a single int-valued operand that produces an int-valued result.
LongBinaryOperator Represents an operation upon two long-valued operands and producing a long-valued result.
LongConsumer Represents an operation that accepts a single long-valued argument and returns no result.
LongFunction Represents a function that accepts a long-valued argument and produces a result.
LongPredicate Represents a predicate (boolean-valued function) of one long-valued argument.
LongSupplier Represents a supplier of long-valued results.
LongToDoubleFunction Represents a function that accepts a long-valued argument and produces a double-valued result.
LongToIntFunction Represents a function that accepts a long-valued argument and produces an int-valued result.
LongUnaryOperator Represents an operation on a single long-valued operand that produces a long-valued result.
ObjDoubleConsumer Represents an operation that accepts an object-valued and a double-valued argument, and returns no result.
ObjIntConsumer Represents an operation that accepts an object-valued and a int-valued argument, and returns no result.
ObjLongConsumer Represents an operation that accepts an object-valued and a long-valued argument, and returns no result.
Predicate Represents a predicate (boolean-valued function) of one argument.
Supplier Represents a supplier of results.
ToDoubleFunction Represents a function that produces a double-valued result.
ToIntFunction Represents a function that produces an int-valued result.
ToLongFunction Represents a function that produces a long-valued result.
UnaryOperator Represents an operation on a single operand that produces a result of the same type as its operand.