Here you can find the source of getCollection(Class> collectionType)
Parameter | Description |
---|---|
collectionType | the type of the collection |
public static Collection<?> getCollection(Class<?> collectionType)
//package com.java2s; //License from project: Open Source License import java.util.*; import java.util.concurrent.*; public class Main { /**//from w w w. ja va2 s . c o m * Given any of the known collection types, this method will return an instance of the collection. * @param collectionType the type of the collection * @return the collection instance */ public static Collection<?> getCollection(Class<?> collectionType) { if (HashSet.class.equals(collectionType)) { return new HashSet<Object>(); } else if (TreeSet.class.equals(collectionType)) { return new TreeSet<Object>(); } else if (CopyOnWriteArraySet.class.equals(collectionType)) { return new CopyOnWriteArraySet<Object>(); } else if (LinkedHashSet.class.equals(collectionType)) { return new LinkedHashSet<Object>(); } else if (ArrayList.class.equals(collectionType)) { return new ArrayList<Object>(); } else if (LinkedList.class.equals(collectionType)) { return new LinkedList<Object>(); } else if (Vector.class.equals(collectionType)) { return new Vector<Object>(); } else if (Stack.class.equals(collectionType)) { return new Stack<Object>(); } else if (PriorityQueue.class.equals(collectionType)) { return new PriorityQueue<Object>(); } else if (PriorityBlockingQueue.class.equals(collectionType)) { return new PriorityBlockingQueue<Object>(); } else if (ArrayDeque.class.equals(collectionType)) { return new ArrayDeque<Object>(); } else if (ConcurrentLinkedQueue.class.equals(collectionType)) { return new ConcurrentLinkedQueue<Object>(); } else if (LinkedBlockingQueue.class.equals(collectionType)) { return new LinkedBlockingQueue<Object>(); } else if (LinkedBlockingDeque.class.equals(collectionType)) { return new LinkedBlockingDeque<Object>(); } else if (List.class.equals(collectionType)) { return new LinkedList<Object>(); } else if (Set.class.equals(collectionType)) { return new HashSet<Object>(); } else if (Queue.class.equals(collectionType)) { return new PriorityQueue<Object>(); } else if (Deque.class.equals(collectionType)) { return new ArrayDeque<Object>(); } else if (Collection.class.equals(collectionType)) { return new LinkedList<Object>(); } throw new IllegalArgumentException("Unsupported collection type: " + collectionType); } }