On this page

FailableSupplier

@FunctionalInterface public abstract interface org.apache.commons.lang3.function.FailableSupplier<T, E extends Throwable>[source]

A functional interface like Supplier that declares a Throwable.

Parameters:

  • <T> – The type of results supplied by this supplier.

  • <E> – The kind of thrown exception or error.

Since:

3.11

Fields and constants

NUL

Returns the singleton supplier that always returns null.
@SuppressWarnings({"rawtypes"}) public static final FailableSupplier NUL[source]

Returns the singleton supplier that always returns null.

This supplier never throws an exception.

Since:

3.14.0

Methods

get()

Supplies an object

nul()

Gets the singleton supplier that always returns null.
public abstract T get() throws E[source]

Supplies an object

Returns:

A result

Throws:

E – Thrown if the supplier fails.

@SuppressWarnings({"unchecked"}) public static <T, E extends Exception> FailableSupplier<T, E> nul()[source]

Gets the singleton supplier that always returns null.

This supplier never throws an exception.

Type parameters:

  • <T> – Supplied type.

  • <E> – The kind of thrown exception or error.

Returns:

The NUL singleton.

Since:

3.14.0