nl.knowledgeplaza.util
Class GenericsUtil

java.lang.Object
  nl.knowledgeplaza.util.GenericsUtil

public class GenericsUtil
extends java.lang.Object

Constructors for easy generics: Map> m = newHashMap(); instead of: Map> m = new HashMap>(); This is also available Google Collections in http://code.google.com/p/google-collections/ Which will be moved to Guava sometime http://code.google.com/p/guava-libraries/

Author:

toeu

Constructor Summary

GenericsUtil()

Method Summary

static <E> java.util.ArrayList<E>	newArrayList()
static <T> T[]	newEmptyArray(java.lang.Class<T> type) Keeping a cache of empty arrays can greatly improve performance.
static <K,V> java.util.HashMap<K,V>	newHashMap()
static <K,V> java.util.Hashtable<K,V>	newHashtable()
static <K,V> LinearMap<K,V>	newLinearMap()
static <E> java.util.LinkedList<E>	newLinkedList()
static <T> java.lang.ref.SoftReference<T>	newSoftReference(T t)
static <K,V> java.util.TreeMap<K,V>	newTreeMap()
static <E> java.util.Vector<E>	newVector()
static <K,V> java.util.WeakHashMap<K,V>	newWeakHashMap()
static <T> java.lang.ref.WeakReference<T>	newWeakReference(T t)

Methods inherited from class java.lang.Object

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

Constructor Detail

GenericsUtil

public GenericsUtil()

Method Detail

newHashMap

public static <K,V> java.util.HashMap<K,V> newHashMap()

Type Parameters:

K -

V -

Returns:

newLinearMap

public static <K,V> LinearMap<K,V> newLinearMap()

Type Parameters:

K -

V -

Returns:

newWeakHashMap

public static <K,V> java.util.WeakHashMap<K,V> newWeakHashMap()

Type Parameters:

K -

V -

Returns:

newTreeMap

public static <K,V> java.util.TreeMap<K,V> newTreeMap()

Type Parameters:

K -

V -

Returns:

newHashtable

public static <K,V> java.util.Hashtable<K,V> newHashtable()

Type Parameters:

K -

V -

Returns:

newArrayList

public static <E> java.util.ArrayList<E> newArrayList()

Type Parameters:

E -

Returns:

newLinkedList

public static <E> java.util.LinkedList<E> newLinkedList()

Type Parameters:

E -

Returns:

newVector

public static <E> java.util.Vector<E> newVector()

Type Parameters:

E -

Returns:

newWeakReference

public static <T> java.lang.ref.WeakReference<T> newWeakReference(T t)

Type Parameters:

T -

Parameters:

t -

Returns:

newSoftReference

public static <T> java.lang.ref.SoftReference<T> newSoftReference(T t)

Type Parameters:

T -

Parameters:

t -

Returns:

newEmptyArray

public static <T> T[] newEmptyArray(java.lang.Class<T> type)

Keeping a cache of empty arrays can greatly improve performance. This is a generics version.