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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 v:
for (Enumeration e = v.elements() ; e.hasMoreElements() ;) {
System.out.println(e.nextElement());
}
Methods are provided to enumerate through the elements of a vector, the keys of a hashtable, and the values in a hashtable.
nextElement(),
Hashtable,
Hashtable.elements(),
Hashtable.keys(),
Vector,
Vector.elements()| Method Summary | |
|---|---|
boolean |
hasMoreElements()
Tests if this enumeration contains more elements. |
E |
nextElement()
Returns the next element of this enumeration if this enumeration object has at least one more element to provide. |
| Method Detail |
|---|
boolean hasMoreElements()
true if and only if this enumeration object
contains at least one more element to provide; false
otherwise.E nextElement()
NoSuchElementException - if no more elements exist.
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