Module net.shibboleth.utilities.java.support

Package net.shibboleth.utilities.java.support.primitive

Class ObjectSupport

java.lang.Object

net.shibboleth.utilities.java.support.primitive.ObjectSupport

public final class ObjectSupport
extends Object

Helper methods for working with Objects.

Constructor Summary

Constructors

Modifier	Constructor	Description
private	ObjectSupport()	Constructor.

Method Summary

Modifier and Type	Method	Description
static <T> T	firstNonNull(T... objects)	Return the first from a list of arguments that is non-null, or null if all arguments are null.
static int	hashCode(Object o)	Deprecated, for removal: This API element is subject to removal in a future version.

Methods inherited from class java.lang.Object

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

Constructor Detail

ObjectSupport

private ObjectSupport()

Constructor.

Method Detail

hashCode

@Deprecated(forRemoval=true)
public static int hashCode(@Nullable
                           Object o)

Deprecated, for removal: This API element is subject to removal in a future version.

Performs a safe (null-aware) Object.hashCode().

Parameters:

o - object for which to get the hash code, may be null

Returns:

the hash code for the object of 0 if the given object is null

firstNonNull

@SafeVarargs
@Nullable
public static <T> T firstNonNull(@Nullable
                                 T... objects)

Return the first from a list of arguments that is non-null, or null if all arguments are null.

This is similar to Guava's MoreObjects.firstNonNull(Object, Object), except it takes more than 2 arguments, and also doesn't throw a null pointer exception if all arguments are null.

Type Parameters:

T - the type of arguments being evaluated

Parameters:

objects - the list of object references to evaluate

Returns:

the first non-null argument, or null if all arguments are null