Module java.base
Package java.util

Interface Enumeration<E>

Type Parameters:
E - the type of elements returned by this enumeration
All Known Subinterfaces:
All Known Implementing Classes:

public interface Enumeration<E>
An object that implements the Enumeration interface generates a series of elements, one at a time. Successive calls to the nextElement method return successive elements of the series.

For example, to print all elements of a Vector<E> v:

   for (Enumeration<E> e = v.elements(); e.hasMoreElements();)

Methods are provided to enumerate through the elements of a vector, the keys of a hashtable, and the values in a hashtable. Enumerations are also used to specify the input streams to a SequenceInputStream.

API Note:
The functionality of this interface is duplicated by the Iterator interface. In addition, Iterator adds an optional remove operation, and has shorter method names. New implementations should consider using Iterator in preference to Enumeration. It is possible to adapt an Enumeration to an Iterator by using the asIterator() method.
See Also: