Contains the classes that implement the Smalltalk collections. Many of the Smalltalk collection classes wrap primitive Java™ collections. Some of these wrappers support instantiation with primitive compatible utility interfaces. For example, smalltalk.collection.Set wraps a java.util.Set, with a default of java.util.HashSet. Also, smalltalk.collection.Dictionary wraps a java.util.Map, with a default of java.util.Hashtable. See the specific collection classes for more details.