001: /*
002: * $Header: /home/cvs/jakarta-commons/primitives/src/java/org/apache/commons/collections/primitives/IntIterator.java,v 1.3 2003/10/16 20:49:36 scolebourne Exp $
003: * ====================================================================
004: * The Apache Software License, Version 1.1
005: *
006: * Copyright (c) 2003 The Apache Software Foundation. All rights
007: * reserved.
008: *
009: * Redistribution and use in source and binary forms, with or without
010: * modification, are permitted provided that the following conditions
011: * are met:
012: *
013: * 1. Redistributions of source code must retain the above copyright
014: * notice, this list of conditions and the following disclaimer.
015: *
016: * 2. Redistributions in binary form must reproduce the above copyright
017: * notice, this list of conditions and the following disclaimer in
018: * the documentation and/or other materials provided with the
019: * distribution.
020: *
021: * 3. The end-user documentation included with the redistribution, if
022: * any, must include the following acknowledgement:
023: * "This product includes software developed by the
024: * Apache Software Foundation (http://www.apache.org/)."
025: * Alternately, this acknowledgement may appear in the software itself,
026: * if and wherever such third-party acknowledgements normally appear.
027: *
028: * 4. The names "The Jakarta Project", "Commons", and "Apache Software
029: * Foundation" must not be used to endorse or promote products derived
030: * from this software without prior written permission. For written
031: * permission, please contact apache@apache.org.
032: *
033: * 5. Products derived from this software may not be called "Apache"
034: * nor may "Apache" appear in their names without prior written
035: * permission of the Apache Software Foundation.
036: *
037: * THIS SOFTWARE IS PROVIDED ``AS IS'' AND ANY EXPRESSED OR IMPLIED
038: * WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE IMPLIED WARRANTIES
039: * OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE ARE
040: * DISCLAIMED. IN NO EVENT SHALL THE APACHE SOFTWARE FOUNDATION OR
041: * ITS CONTRIBUTORS BE LIABLE FOR ANY DIRECT, INDIRECT, INCIDENTAL,
042: * SPECIAL, EXEMPLARY, OR CONSEQUENTIAL DAMAGES (INCLUDING, BUT NOT
043: * LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS OR SERVICES; LOSS OF
044: * USE, DATA, OR PROFITS; OR BUSINESS INTERRUPTION) HOWEVER CAUSED AND
045: * ON ANY THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT LIABILITY,
046: * OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY OUT
047: * OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF
048: * SUCH DAMAGE.
049: * ====================================================================
050: *
051: * This software consists of voluntary contributions made by many
052: * individuals on behalf of the Apache Software Foundation. For more
053: * information on the Apache Software Foundation, please see
054: * <http://www.apache.org/>.
055: *
056: */
057:
058: package org.apache.commons.collections.primitives;
059:
060: /**
061: * An iterator over <code>int</code> values.
062: *
063: * @see org.apache.commons.collections.primitives.adapters.IntIteratorIterator
064: * @see org.apache.commons.collections.primitives.adapters.IteratorIntIterator
065: *
066: * @since Commons Primitives 1.0
067: * @version $Revision: 1.3 $ $Date: 2003/10/16 20:49:36 $
068: *
069: * @author Rodney Waldhoff
070: */
071: public interface IntIterator {
072: /**
073: * Returns <code>true</code> iff I have more elements.
074: * (In other words, returns <code>true</code> iff
075: * a subsequent call to {@link #next next} will return
076: * an element rather than throwing an exception.)
077: *
078: * @return <code>true</code> iff I have more elements
079: */
080: boolean hasNext();
081:
082: /**
083: * Returns the next element in me.
084: *
085: * @return the next element in me
086: * @throws NoSuchElementException if there is no next element
087: */
088: int next();
089:
090: /**
091: * Removes from my underlying collection the last
092: * element {@link #next returned} by me
093: * (optional operation).
094: *
095: * @throws UnsupportedOperationException if this operation is not supported
096: * @throws IllegalStateException if {@link #next} has not yet been
097: * called, or {@link #remove} has already been called since
098: * the last call to {@link #next}.
099: */
100: void remove();
101: }
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