Sets.java

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// -*- mode: java; c-basic-offset: 2; -*-
// Copyright 2009-2011 Google, All Rights reserved
// Copyright 2011-2012 MIT, All rights reserved
// Released under the Apache License, Version 2.0
// http://www.apache.org/licenses/LICENSE-2.0
 
package com.google.appinventor.components.runtime.collect;
 
import java.util.Collections;
import java.util.EnumSet;
import java.util.HashSet;
import java.util.SortedSet;
import java.util.TreeSet;
 
public class Sets {
 
  public static <K> HashSet<K> newHashSet() {
    return new HashSet<K>();
  }
 
  public static <E> HashSet<E> newHashSet(E... elements) {
    int capacity = elements.length * 4 / 3 + 1;
    HashSet<E> set = new HashSet<E>(capacity);
    Collections.addAll(set, elements);
    return set;
  }
 
  public static <E> SortedSet<E> newSortedSet(E... elements) {
    SortedSet<E> set = new TreeSet<E>();
    Collections.addAll(set, elements);
    return set;
  }
}