Utils

Class SetUtils

java.lang.Object

Utils.SetUtils

public class SetUtils
extends java.lang.Object

Utility class for sets

Version:

2.0

Nested Class Summary

Nested Classes

Modifier and Type	Class and Description
static class	SetUtils.SetHasMultipleElementsException Exception thrown if an attempt is made to get the single element from a set that has multiple elements.

Method Summary

Methods

Modifier and Type	Method and Description
static <T> T	getSingleElement(java.util.Set<T> set) Gets the single element of a set if it has only one element.

Methods inherited from class java.lang.Object

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

Method Detail

getSingleElement

public static <T> T getSingleElement(java.util.Set<T> set)
                          throws SetUtils.SetHasMultipleElementsException

Gets the single element of a set if it has only one element. Throws an exception if there is more than one element. Returns null if there are no elements

Type Parameters:

T - The type of the elements of the set

Parameters:

set - The set

Returns:

The single element in the set

Throws:

SetUtils.SetHasMultipleElementsException - If the set has multiple elements in it