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Collections Framework

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The Collection Interface

   
add(E) addAll(Collection<? Extends E>)
remove(o) removeAll(Collection<?>)
clear() removeIf(Predicate<? super E>)
size() containsAll(Collection<?>)
stream() iterator()
isEmpty() contains(Object)
toArray() T[] toArray(T[])
   

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Collections and Maps

     
ArrayList EnumSet EnumMap
LinkedList LinkedHashSet LinkedHashMap
ArrayDeque PriorityQueue WeakHashMap
HashSet HashMap IdentityHashMap
TreeSet TreeMap  
     

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Utility Classes