ix

Interface Enumerator<T>

Type Parameters:

T - the element type

All Known Implementing Classes:

IteratorToEnumerator

public interface Enumerator<T>

The base interface for an Enumerable-Enumerator pair of iteration method where the enumerator has next() to advance the iteration and current() to return the current element. An example from normal Java for such kind of iteration is the java.sql.ResultSet.

Method Summary

Methods

Modifier and Type	Method and Description
T	current() Returns the current element.
boolean	next() Tries to move to the next element.

Method Detail

next

boolean next()

Tries to move to the next element. Only this method may throw an exception.

Returns:

false if there are no more elements

current

T current()

Returns the current element. If the enumeration was not started via the next() method, or the enumeration has already finished and next() returned false, a NoSuchElementException is thrown. Other than these, this method should not throw any exception.

Returns:

the current element.