Package org.apache.commons.lang3.function

Interface FailableSupplier<T,E extends Throwable>

Type Parameters:

T - Return type.

E - The kind of thrown exception or error.

All Known Subinterfaces:

ConcurrentInitializer<T>

All Known Implementing Classes:

AbstractConcurrentInitializer, AbstractConcurrentInitializer.AbstractBuilder, AbstractSupplier, AtomicInitializer, AtomicInitializer.Builder, AtomicSafeInitializer, AtomicSafeInitializer.Builder, BackgroundInitializer, BackgroundInitializer.Builder, CallableBackgroundInitializer, ConstantInitializer, LazyInitializer, LazyInitializer.Builder, MultiBackgroundInitializer

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 FailableSupplier<T,E extends Throwable>

A functional interface like Supplier that declares a Throwable.

Since:

3.11

Field Summary

Fields

Modifier and Type	Field	Description
static final FailableSupplier	NUL	Returns the singleton supplier that always returns null.

Method Summary

Modifier and Type	Method	Description
T	get()	Supplies an object
static <T, E extends Exception> FailableSupplier<T,E>	nul()	Returns the singleton supplier that always returns null.

Field Details

NUL

static final FailableSupplier NUL

Returns the singleton supplier that always returns null.

This supplier never throws an exception.

Since:

3.14.0

Method Details

nul

static <T,
E extends Exception>
FailableSupplier<T,E> nul()

Returns 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

get

T get()
throws E

Supplies an object

Returns:

a result

Throws:

E - if the supplier fails