for each for arraylist but not for arrays


I wonder why 'for each' loop used for only arraylist but not for arrays. For what other collection types we can use 'for each' . please advise
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public static void main(String[] args){
      int [] array={2,7,1,8,2,8};
      for( int i : array ){
          System.out.print( i );
works fine
gudii9Author Commented:
Ok. Can we use it with all collection types?
What are you trying to do that you cannot do?
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mccarlIT Business Systems Analyst / Software DeveloperCommented:
Specifically, the foreach loop construct can be used for any array and any object that implements the "Iterable" interface. The List interface inherits from Iterable so therefore any List implementation can be used, and the same for Set implementations. However such things as Map's don't so you can't directly use them in foreach loops, but they do provide methods such as, entrySet(), keySet() and values(), that do return Iterable views of the contents and so they CAN be used in foreach loops.

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Dung TrinhMarching Band Field CrewCommented:
For each can be use on any data structure that implements Iterable. You can read this link to have more understand about classes that use foreach
Array is an exception when it doesn't implements Iterable but still can use for each loop
gudii9Author Commented:
For each can be use on any data structure that implements Iterable. You can read this link to have more understand about classes that use foreach
Link is missing. Please provide
gudii9Author Commented:
any object that implements the "Iterable" interface.
where to find list of all objects that implements 'iterable' interface. please advise
Have you tried reading the Java API docs?
awking00Information Technology SpecialistCommented:
From Java documentation -

Interface Iterable<T>

All Known Implementing Classes:
AbstractCollection, AbstractList, AbstractQueue, AbstractSequentialList, AbstractSet, ArrayBlockingQueue, ArrayDeque, ArrayList, AttributeList, BatchUpdateException, BeanContextServicesSupport, BeanContextSupport, ConcurrentLinkedQueue, ConcurrentSkipListSet, CopyOnWriteArrayList, CopyOnWriteArraySet, DataTruncation, DelayQueue, EnumSet, HashSet, JobStateReasons, LinkedBlockingDeque, LinkedBlockingQueue, LinkedHashSet, LinkedList, PriorityBlockingQueue, PriorityQueue, RoleList, RoleUnresolvedList, RowSetWarning, SerialException, ServiceLoader, SQLClientInfoException, SQLDataException, SQLException, SQLFeatureNotSupportedException, SQLIntegrityConstraintViolationException, SQLInvalidAuthorizationSpecException, SQLNonTransientConnectionException, SQLNonTransientException, SQLRecoverableException, SQLSyntaxErrorException, SQLTimeoutException, SQLTransactionRollbackException, SQLTransientConnectionException, SQLTransientException, SQLWarning, Stack, SyncFactoryException, SynchronousQueue, SyncProviderException, TreeSet, Vector
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