org.jivesoftware.smack.util

Class Objects

java.lang.Object

org.jivesoftware.smack.util.Objects

public class Objects
extends java.lang.Object

Constructor Summary

Constructors

Constructor and Description
Objects()

Method Summary

Modifier and Type	Method and Description
static boolean	equals(java.lang.Object a, java.lang.Object b)
static <T> T	requireNonNull(T obj)
static <T> T	requireNonNull(T obj, java.lang.String message) Checks that the specified object reference is not null and throws a customized IllegalArgumentException if it is.
static <T extends java.util.Collection<?>> T	requireNonNullNorEmpty(T collection, java.lang.String message) Require a collection to be neither null, nor empty.

Methods inherited from class java.lang.Object

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

Constructor Detail

Objects

public Objects()

Method Detail

requireNonNull

public static <T> T requireNonNull(T obj,
                                   java.lang.String message)
                            throws java.lang.IllegalArgumentException

Checks that the specified object reference is not null and throws a customized IllegalArgumentException if it is.

Note that unlike java.util.Objects, this method throws an IllegalArgumentException instead of an NullPointerException.

Type Parameters:

T - the type of the reference.

Parameters:

obj - the object reference to check for nullity.

message - detail message to be used in the event that a IllegalArgumentException is thrown.

Returns:

obj if not null.

Throws:

java.lang.IllegalArgumentException - in case obj is null.

requireNonNull

public static <T> T requireNonNull(T obj)

requireNonNullNorEmpty

public static <T extends java.util.Collection<?>> T requireNonNullNorEmpty(T collection,
                                                                           java.lang.String message)

Require a collection to be neither null, nor empty.

Type Parameters:

T - Collection type

Parameters:

collection - collection

message - error message

Returns:

collection

equals

public static boolean equals(java.lang.Object a,
                             java.lang.Object b)