Package org.apache.commons.lang3.function

package org.apache.commons.lang3.function

Provides functional interfaces to complement those in java.lang.function and utilities for working with Java 8 lambdas.

Contains failable functional interfaces that address the fact that lambdas are supposed not to throw Exceptions, at least not checked Exceptions, A.K.A. instances of Exception. A failable functional interface declares a type of Exception that may be raised if the function fails.

Since:

3.11

Related Packages

Package	Description
org.apache.commons.lang3	Provides highly reusable utility methods, chiefly concerned with adding value to the java.lang classes.

Class	Description
BooleanConsumer	A functional interface like IntConsumer but for boolean.
ByteConsumer	A functional interface like IntConsumer but for byte.
ByteSupplier	A functional interface like IntSupplier, but for a byte.
Consumers	Provides Consumer instances.
Failable	This class provides utility functions, and classes for working with the java.util.function package, or more generally, with Java 8 lambdas.
FailableBiConsumer<T, U, E extends Throwable>	A functional interface like BiConsumer that declares a Throwable.
FailableBiFunction<T, U, R, E extends Throwable>	A functional interface like BiFunction that declares a Throwable.
FailableBiPredicate<T, U, E extends Throwable>	A functional interface like BiPredicate that declares a Throwable.
FailableBooleanSupplier<E extends Throwable>	A functional interface like BooleanSupplier that declares a Throwable.
FailableByteConsumer<E extends Throwable>	A functional interface like ByteConsumer that declares a Throwable.
FailableByteSupplier<E extends Throwable>	A functional interface like IntSupplier, but for a byte, that declares a Throwable.
FailableCallable<R, E extends Throwable>	A functional interface like Callable that declares a Throwable.
FailableConsumer<T, E extends Throwable>	A functional interface like Consumer that declares a Throwable.
FailableDoubleBinaryOperator<E extends Throwable>	A functional interface like DoubleBinaryOperator that declares a Throwable.
FailableDoubleConsumer<E extends Throwable>	A functional interface like DoubleConsumer that declares a Throwable.
FailableDoubleFunction<R, E extends Throwable>	A functional interface like DoubleFunction that declares a Throwable.
FailableDoublePredicate<E extends Throwable>	A functional interface like DoublePredicate that declares a Throwable.
FailableDoubleSupplier<E extends Throwable>	A functional interface like DoubleSupplier that declares a Throwable.
FailableDoubleToIntFunction<E extends Throwable>	A functional interface like DoubleToIntFunction that declares a Throwable.
FailableDoubleToLongFunction<E extends Throwable>	A functional interface like DoubleToLongFunction that declares a Throwable.
FailableDoubleUnaryOperator<E extends Throwable>	A functional interface like DoubleUnaryOperator that declares a Throwable.
FailableFunction<T, R, E extends Throwable>	A functional interface like Function that declares a Throwable.
FailableIntBinaryOperator<E extends Throwable>	A functional interface like IntBinaryOperator that declares a Throwable.
FailableIntConsumer<E extends Throwable>	A functional interface like IntConsumer that declares a Throwable.
FailableIntFunction<R, E extends Throwable>	A functional interface like IntFunction that declares a Throwable.
FailableIntPredicate<E extends Throwable>	A functional interface like IntPredicate that declares a Throwable.
FailableIntSupplier<E extends Throwable>	A functional interface like IntSupplier that declares a Throwable.
FailableIntToDoubleFunction<E extends Throwable>	A functional interface like IntToDoubleFunction that declares a Throwable.
FailableIntToFloatFunction<E extends Throwable>	A functional interface like IntToDoubleFunction but for float that declares a Throwable.
FailableIntToLongFunction<E extends Throwable>	A functional interface like IntToLongFunction that declares a Throwable.
FailableIntUnaryOperator<E extends Throwable>	A functional interface like IntUnaryOperator that declares a Throwable.
FailableLongBinaryOperator<E extends Throwable>	A functional interface like LongBinaryOperator that declares a Throwable.
FailableLongConsumer<E extends Throwable>	A functional interface like LongConsumer that declares a Throwable.
FailableLongFunction<R, E extends Throwable>	A functional interface like LongFunction that declares a Throwable.
FailableLongPredicate<E extends Throwable>	A functional interface like LongPredicate that declares a Throwable.
FailableLongSupplier<E extends Throwable>	A functional interface like LongSupplier that declares a Throwable.
FailableLongToDoubleFunction<E extends Throwable>	A functional interface like LongToDoubleFunction that declares a Throwable.
FailableLongToIntFunction<E extends Throwable>	A functional interface like LongToIntFunction that declares a Throwable.
FailableLongUnaryOperator<E extends Throwable>	A functional interface like LongUnaryOperator that declares a Throwable.
FailableObjDoubleConsumer<T, E extends Throwable>	A functional interface like ObjDoubleConsumer that declares a Throwable.
FailableObjIntConsumer<T, E extends Throwable>	A functional interface like ObjIntConsumer that declares a Throwable.
FailableObjLongConsumer<T, E extends Throwable>	A functional interface like ObjLongConsumer that declares a Throwable.
FailablePredicate<T, E extends Throwable>	A functional interface like Predicate that declares a Throwable.
FailableRunnable<E extends Throwable>	A functional interface like Runnable that declares a kind of Throwable.
FailableShortSupplier<E extends Throwable>	A functional interface like IntSupplier but for short that declares a Throwable.
FailableSupplier<T, E extends Throwable>	A functional interface like Supplier that declares a Throwable.
FailableToBooleanFunction<T, E extends Throwable>	A functional interface like a ToBooleanFunction that declares a Throwable.
FailableToDoubleBiFunction<T, U, E extends Throwable>	A functional interface like ToDoubleBiFunction that declares a Throwable.
FailableToDoubleFunction<T, E extends Throwable>	A functional interface like ToDoubleFunction that declares a Throwable.
FailableToIntBiFunction<T, U, E extends Throwable>	A functional interface like ToIntBiFunction that declares a Throwable.
FailableToIntFunction<T, E extends Throwable>	A functional interface like ToIntFunction that declares a Throwable.
FailableToLongBiFunction<T, U, E extends Throwable>	A functional interface like ToLongBiFunction that declares a Throwable.
FailableToLongFunction<T, E extends Throwable>	A functional interface like ToLongFunction that declares a Throwable.
Functions	Factory for Function.
IntToCharFunction	Represents a function that accepts an int-valued argument and produces a char-valued result.
MethodInvokers	Converts Method objects to lambdas.
Predicates	Factory for Predicate.
Suppliers	Helps use Supplier.
ToBooleanBiFunction<T,U>	A function that accepts two arguments and produces a boolean result.
TriConsumer<T,U,V>	Represents an operation that accepts three input arguments and returns no result.
TriFunction<T,U,V,R>	Represents a function that accepts three arguments and produces a result.