http://www.falkhausen.de/en/diagram/html/java.util.Collection.html
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1. java.util.Collection
Interfaces: Collection, List, Set, SortedSet, RandomAccess
Classes: AbstractCollection, AbstractSet, AbstractList, TreeSet,
HashSet, AbstractSequentialList, ArrayList, LinkedList, LinkedHashSet
2.java.util.Map
Interfaces: Map, SortedMap
Classes: WeakHashMap, IdentityHashMap, AbstractMap, LinkedHashMap,
HashMap, TreeMap
3.java.util.LegacyCollections
Interfaces: Collection, Map, List, RandomAccess
Classes: Dictionary, Vector, Hashtable, AbstractList, Properties,
Stack
4.java.util.MiscCollections
Interfaces: Iterator, Enumeration, ListIterator, Comparator
Classes: Collections, Arrays, StringTokenizer, BitSe
There are other too like Exceptions, Security more
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