Package org.springframework.util.function

Class SupplierUtils

java.lang.Object

org.springframework.util.function.SupplierUtils

public abstract class SupplierUtils
extends Object

Convenience utilities for Supplier handling.

Since:

5.1

Author:

Juergen Hoeller

See Also:

• SingletonSupplier

Constructor Summary

Constructors

Constructor	Description
SupplierUtils()

Method Summary

Modifier and Type	Method	Description
static @Nullable Object	resolve(@Nullable Object candidate)	Resolve a given Supplier, getting its result or immediately returning the given Object as-is if not a Supplier.
static <T> @Nullable T	resolve(@Nullable Supplier<T> supplier)	Resolve the given Supplier, getting its result or immediately returning null if the supplier itself was null.

Methods inherited from class java.lang.Object

clone, equals, finalize, getClass, hashCode, notify, notifyAll, toString, wait, wait, wait

Constructor Details

SupplierUtils

public SupplierUtils()

Method Details

resolve

@Contract("null -> null; !null -> !null")
public static <T> @Nullable T resolve(@Nullable Supplier<T> supplier)

Resolve the given Supplier, getting its result or immediately returning null if the supplier itself was null.

Parameters:

supplier - the supplier to resolve

Returns:

the supplier's result, or null if none

resolve

public static @Nullable Object resolve(@Nullable Object candidate)

Resolve a given Supplier, getting its result or immediately returning the given Object as-is if not a Supplier.

Parameters:

candidate - the candidate to resolve (potentially a Supplier)

Returns:

a supplier's result or the given Object as-is

Since:

6.1.4