org.waarp.common.utility

Class SingletonUtils

java.lang.Object

org.waarp.common.utility.SingletonUtils

public final class SingletonUtils
extends Object

Singleton utility class

Method Summary

Modifier and Type	Method and Description
static byte[]	getSingletonByteArray() Immutable empty byte array
static InputStream	singletonInputStream() Immutable empty InputStream
static <E> List<E>	singletonList() Immutable empty List
static <E,V> Map<E,V>	singletonMap() Immutable empty Map
static OutputStream	singletonOutputStream() Immutable void OutputStream.
static <E> Set<E>	singletonSet() Immutable empty Set

Methods inherited from class java.lang.Object

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

Method Detail

getSingletonByteArray

public static byte[] getSingletonByteArray()

Immutable empty byte array

Returns:

a Byte Array Singleton

singletonList

public static <E> List<E> singletonList()

Immutable empty List

Returns:

an immutable empty List

singletonSet

public static <E> Set<E> singletonSet()

Immutable empty Set

Returns:

an immutable empty Set

singletonMap

public static <E,V> Map<E,V> singletonMap()

Immutable empty Map

Returns:

an immutable empty Map

singletonInputStream

public static InputStream singletonInputStream()

Immutable empty InputStream

Returns:

an immutable empty InputStream

singletonOutputStream

public static OutputStream singletonOutputStream()

Immutable void OutputStream. Any write elements are discarder (equivalent to /dev/null).

Returns:

an immutable empty OutputStream