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Class guinea.util.EnumerationFilter

java.lang.Object
   |
   +----guinea.util.EnumerationFilter

public class EnumerationFilter

extends Object

implements Enumeration

The principle is more easily explained with an example in Scheme:

(filter (lambda (x) (>= x 0)) '(1 -2 3 -4 10 -99))
==> (1 3 10)

Constructor Index

· EnumerationFilter(Enumeration, FilterTest)

Construct a new filtered enumeration.

Method Index

· hasMoreElements()

Tests if this enumeration contains more elements.

· nextElement()

Returns the next element of this enumeration.

Constructors

 public EnumerationFilter(Enumeration enum,
                          FilterTest test)

Construct a new filtered enumeration. It takes an enumeration and returns a new enumeration that includes only the elements that pass the test.

Parameters:

enum - an enumeration to filter.

test - the test that decides whether to include an object to the new enumeration.

Methods

 public synchronized boolean hasMoreElements()

Tests if this enumeration contains more elements.

Returns:

true if this enumeration contains more elements; false otherwise.

 public synchronized Object nextElement()

Returns the next element of this enumeration.

Returns:

the next element of this enumeration.

Throws: NoSuchElementException

if no more elements exist.

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