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Java Collection utilities

/ Published in: Java
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This is a collection of useful static initializers of Java arrays, lists and maps.

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  1. public class CollectionInitUtils {
  2.  
  3.     public static <T> T[] ar(final T... ts) {
  4.         return ts;
  5.     }
  6.  
  7.     public static <T> Set<T> set(final T... ts) {
  8.         return new HashSet<T>(Arrays.asList(ts));
  9.     }
  10.  
  11.     public static <K, V> Map<K, V> zipMap(final K[] keys, final V[] values) {
  12.         final Map<K, V> res = new HashMap<K, V>();
  13.         for (int i = 0; i < keys.length; i++) {
  14.             res.put(keys[i], values[i]);
  15.         }
  16.         return res;
  17.     }
  18. }

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