Package org.apache.tapestry5.commons.util

Class CollectionFactory

  • public final class CollectionFactory
extends java.lang.Object
    Static factory methods to ease the creation of new collection types (when using generics). Most of these method leverage the compiler's ability to match generic types by return value. Typical usage (with a static import): 
     Map<Foo, Bar> map = newMap();
    This is a replacement for: 
     Map<Foo, Bar> map = new HashMap<Foo, Bar>();

    • Method Summary

      All Methods Static Methods Concrete Methods 
      Modifier and Type Method Description
      static <V> java.util.Map<java.lang.String,​V> newCaseInsensitiveMap()  
      static <K,​V>
      java.util.concurrent.ConcurrentMap<K,​V>      		 newConcurrentMap()
      Constructs a new concurrent map, which is safe to access via multiple threads.
      static <T> java.util.LinkedList<T> newLinkedList()
      Useful for queues.
      static <T> java.util.List<T> newList()
      Contructs and returns a new generic ArrayList instance.
      static <T,​V extends T>
      java.util.List<T>      		 newList​(java.util.Collection<V> list)
      Constructs and returns a new ArrayList as a copy of the provided collection.
      static <T,​V extends T>
      java.util.List<T>      		 newList​(V... elements)
      Creates a new, fully modifiable list from an initial set of elements.
      static <K,​V>
      java.util.Map<K,​V>      		 newMap()
      Constructs and returns a generic HashMap instance.
      static <K,​V>
      java.util.Map<K,​V>      		 newMap​(java.util.Map<? extends K,​? extends V> map)
      Constructs a new HashMap instance by copying an existing Map instance.
      static <T> java.util.Set<T> newSet()
      Constructs and returns a generic HashSet instance.
      static <T,​V extends T>
      java.util.Set<T>      		 newSet​(java.util.Collection<V> values)
      Contructs a new HashSet and initializes it using the provided collection.
      static <T,​V extends T>
      java.util.Set<T>      		 newSet​(V... values)  
      static <T> Stack<T> newStack()  
      static <T> java.util.List<T> newThreadSafeList()
      Constructs and returns a new CopyOnWriteArrayList.

      • Methods inherited from class java.lang.Object

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

    • Method Detail

      • newMap

        public static <K,​V> java.util.Map<K,​V> newMap()
        Constructs and returns a generic HashMap instance.

      • newSet

        public static <T> java.util.Set<T> newSet()
        Constructs and returns a generic HashSet instance.

      • newSet

        public static <T,​V extends T> java.util.Set<T> newSet​(java.util.Collection<V> values)
        Contructs a new HashSet and initializes it using the provided collection.

      • newSet

        public static <T,​V extends T> java.util.Set<T> newSet​(V... values)

      • newMap

        public static <K,​V> java.util.Map<K,​V> newMap​(java.util.Map<? extends K,​? extends V> map)
        Constructs a new HashMap instance by copying an existing Map instance.

      • newConcurrentMap

        public static <K,​V> java.util.concurrent.ConcurrentMap<K,​V> newConcurrentMap()
        Constructs a new concurrent map, which is safe to access via multiple threads.

      • newList

        public static <T> java.util.List<T> newList()
        Contructs and returns a new generic ArrayList instance.

      • newList

        public static <T,​V extends T> java.util.List<T> newList​(V... elements)
        Creates a new, fully modifiable list from an initial set of elements.

      • newLinkedList

        public static <T> java.util.LinkedList<T> newLinkedList()
        Useful for queues.

      • newList

        public static <T,​V extends T> java.util.List<T> newList​(java.util.Collection<V> list)
        Constructs and returns a new ArrayList as a copy of the provided collection.

      • newThreadSafeList

        public static <T> java.util.List<T> newThreadSafeList()
        Constructs and returns a new CopyOnWriteArrayList.

      • newCaseInsensitiveMap

        public static <V> java.util.Map<java.lang.String,​V> newCaseInsensitiveMap()