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Diffstat (limited to 'libjava/gnu/java/util/EmptyEnumeration.java')
-rw-r--r-- | libjava/gnu/java/util/EmptyEnumeration.java | 96 |
1 files changed, 0 insertions, 96 deletions
diff --git a/libjava/gnu/java/util/EmptyEnumeration.java b/libjava/gnu/java/util/EmptyEnumeration.java deleted file mode 100644 index 46a82d6cb53..00000000000 --- a/libjava/gnu/java/util/EmptyEnumeration.java +++ /dev/null @@ -1,96 +0,0 @@ -/* EmptyEnumeration.java -- a constant empty enumeration - Copyright (C) 2001, 2002 Free Software Foundation, Inc. - -This file is part of GNU Classpath. - -GNU Classpath is free software; you can redistribute it and/or modify -it under the terms of the GNU General Public License as published by -the Free Software Foundation; either version 2, or (at your option) -any later version. - -GNU Classpath is distributed in the hope that it will be useful, but -WITHOUT ANY WARRANTY; without even the implied warranty of -MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the GNU -General Public License for more details. - -You should have received a copy of the GNU General Public License -along with GNU Classpath; see the file COPYING. If not, write to the -Free Software Foundation, Inc., 51 Franklin Street, Fifth Floor, Boston, MA -02110-1301 USA. - -Linking this library statically or dynamically with other modules is -making a combined work based on this library. Thus, the terms and -conditions of the GNU General Public License cover the whole -combination. - -As a special exception, the copyright holders of this library give you -permission to link this library with independent modules to produce an -executable, regardless of the license terms of these independent -modules, and to copy and distribute the resulting executable under -terms of your choice, provided that you also meet, for each linked -independent module, the terms and conditions of the license of that -module. An independent module is a module which is not derived from -or based on this library. If you modify this library, you may extend -this exception to your version of the library, but you are not -obligated to do so. If you do not wish to do so, delete this -exception statement from your version. */ - -package gnu.java.util; - -import java.io.Serializable; -import java.util.Enumeration; -import java.util.NoSuchElementException; - -/** - * This is a helper class that produces an empty Enumerations. There is only - * one instance of this class that can be used whenever one needs a - * non-null but empty enumeration. Using this class prevents multiple - * small objects and inner classes. <code>getInstance()</code> returns - * the only instance of this class. It can be shared by multiple objects and - * threads. - * - * @author Mark Wielaard (mark@klomp.org) - */ -public final class EmptyEnumeration implements Enumeration, Serializable -{ - /** The only instance of this class */ - private static final EmptyEnumeration instance = new EmptyEnumeration(); - - /** - * Private constructor that creates a new empty Enumeration. - */ - private EmptyEnumeration() - { - } - - /** - * Returns the only instance of this class. - * It can be shared by multiple objects and threads. - * - * @return the common empty enumeration - */ - public static EmptyEnumeration getInstance() - { - return instance; - } - - /** - * Returns false, since there are no elements. - * - * @return false - */ - public boolean hasMoreElements() - { - return false; - } - - /** - * Always throws <code>NoSuchElementException</code>, since it is empty. - * - * @throws NoSuchElementException this is empty - */ - public Object nextElement() - { - throw new NoSuchElementException(); - } -} |