Uses of Package
java.util.function

Packages that use java.util.function

Package	Description
java.lang	Provides classes that are fundamental to the design of the Java programming language.
java.time.temporal	Access to date and time using fields and units, and date time adjusters.
java.util	Contains the collections framework, legacy collection classes, event model, date and time facilities, internationalization, and miscellaneous utility classes (a string tokenizer, a random-number generator, and a bit array).
java.util.concurrent	Utility classes commonly useful in concurrent programming.
java.util.concurrent.atomic	A small toolkit of classes that support lock-free thread-safe programming on single variables.
java.util.function	Functional interfaces provide target types for lambda expressions and method references.
java.util.logging	Provides the classes and interfaces of the JavaTM 2 platform's core logging facilities.
java.util.regex	Classes for matching character sequences against patterns specified by regular expressions.
java.util.stream	java.util.stream

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

Class and Description
Consumer An operation which accepts a single input argument and returns no result.
Supplier A supplier of objects.

Classes in java.util.function used by java.time.temporal

Class and Description
UnaryOperator An operation upon a single operand yielding a result.

Classes in java.util.function used by java.util

Class and Description
BiConsumer An operation which accepts two input arguments and returns no result.
BiFunction Apply a function to the input arguments, yielding an appropriate result.
BinaryOperator An operation upon two operands yielding a result.
Consumer An operation which accepts a single input argument and returns no result.
DoubleConsumer An operation which accepts a single double argument and returns no result.
DoubleSupplier A supplier of double values.
Function Apply a function to the input argument, yielding an appropriate result.
IntConsumer An operation which accepts a single integer argument and returns no result.
IntFunction Apply a function to the integer-valued input argument, yielding an appropriate result.
IntSupplier A supplier of int values.
IntToDoubleFunction Apply a function to the input argument, yielding an appropriate result.
IntToLongFunction Apply a function to the input argument, yielding an appropriate result.
IntUnaryOperator An operation on a single int operand yielding an int result.
LongConsumer An operation which accepts a single long argument and returns no result.
LongSupplier A supplier of long values.
Predicate Determines if the input object matches some criteria.
Supplier A supplier of objects.
ToDoubleFunction Apply a function to the input argument, yielding an appropriate result.
ToIntFunction Apply a function to the input argument, yielding an appropriate result.
ToLongFunction Apply a function to the input argument, yielding an appropriate result.
UnaryOperator An operation upon a single operand yielding a result.

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

Class and Description
BiConsumer An operation which accepts two input arguments and returns no result.
BiFunction Apply a function to the input arguments, yielding an appropriate result.
Consumer An operation which accepts a single input argument and returns no result.
Function Apply a function to the input argument, yielding an appropriate result.
Predicate Determines if the input object matches some criteria.
Supplier A supplier of objects.
UnaryOperator An operation upon a single operand yielding a result.

Classes in java.util.function used by java.util.concurrent.atomic

Class and Description
BinaryOperator An operation upon two operands yielding a result.
DoubleBinaryOperator An operation on two double operands yielding a double result.
IntBinaryOperator An operation on two int operands yielding an int result.
IntUnaryOperator An operation on a single int operand yielding an int result.
LongBinaryOperator An operation on two long operands yielding a long result.
LongUnaryOperator An operation on a single long operand yielding a long result.
UnaryOperator An operation upon a single operand yielding a result.

Classes in java.util.function used by java.util.function

Class and Description
BiFunction Apply a function to the input arguments, yielding an appropriate result.
BiPredicate Determines if the input objects match some criteria.
DoublePredicate Determines if the double input value matches some criteria.
Function Apply a function to the input argument, yielding an appropriate result.
IntPredicate Determines if the int input value matches some criteria.
LongPredicate Determines if the long input value matches some criteria.
Predicate Determines if the input object matches some criteria.

Classes in java.util.function used by java.util.logging

Class and Description
Supplier A supplier of objects.

Classes in java.util.function used by java.util.regex

Class and Description
Predicate Determines if the input object matches some criteria.

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

Class and Description
BiConsumer An operation which accepts two input arguments and returns no result.
BiFunction Apply a function to the input arguments, yielding an appropriate result.
BinaryOperator An operation upon two operands yielding a result.
Consumer An operation which accepts a single input argument and returns no result.
DoubleBinaryOperator An operation on two double operands yielding a double result.
DoubleConsumer An operation which accepts a single double argument and returns no result.
DoubleFunction Apply a function to the double-valued input argument, yielding an appropriate result.
DoublePredicate Determines if the double input value matches some criteria.
DoubleSupplier A supplier of double values.
DoubleToIntFunction Apply a function to the input argument, yielding an appropriate result.
DoubleToLongFunction Apply a function to the input argument, yielding an appropriate result.
DoubleUnaryOperator An operation on a double operand yielding a double result.
Function Apply a function to the input argument, yielding an appropriate result.
IntBinaryOperator An operation on two int operands yielding an int result.
IntConsumer An operation which accepts a single integer argument and returns no result.
IntFunction Apply a function to the integer-valued input argument, yielding an appropriate result.
IntPredicate Determines if the int input value matches some criteria.
IntSupplier A supplier of int values.
IntToDoubleFunction Apply a function to the input argument, yielding an appropriate result.
IntToLongFunction Apply a function to the input argument, yielding an appropriate result.
IntUnaryOperator An operation on a single int operand yielding an int result.
LongBinaryOperator An operation on two long operands yielding a long result.
LongConsumer An operation which accepts a single long argument and returns no result.
LongFunction Apply a function to the long-valued input argument, yielding an appropriate result.
LongPredicate Determines if the long input value matches some criteria.
LongSupplier A supplier of long values.
LongToDoubleFunction Apply a function to the input argument, yielding an appropriate result.
LongToIntFunction Apply a function to the input argument, yielding an appropriate result.
LongUnaryOperator An operation on a single long operand yielding a long result.
ObjDoubleConsumer An operation which accepts an object reference and a double, and returns no result.
ObjIntConsumer An operation which accepts an object reference and an int, and returns no result.
ObjLongConsumer An operation which accepts an object reference and a long, and returns no result.
Predicate Determines if the input object matches some criteria.
Supplier A supplier of objects.
ToDoubleFunction Apply a function to the input argument, yielding an appropriate result.
ToIntFunction Apply a function to the input argument, yielding an appropriate result.
ToLongFunction Apply a function to the input argument, yielding an appropriate result.
UnaryOperator An operation upon a single operand yielding a result.