ReadOnlyIterator.java revision 54b6cfa9a9e5b861a9930af873580d6dc20f773c 
1/*
2 *  Licensed to the Apache Software Foundation (ASF) under one or more
3 *  contributor license agreements.  See the NOTICE file distributed with
4 *  this work for additional information regarding copyright ownership.
5 *  The ASF licenses this file to You under the Apache License, Version 2.0
6 *  (the "License"); you may not use this file except in compliance with
7 *  the License.  You may obtain a copy of the License at
8 *
9 *     http://www.apache.org/licenses/LICENSE-2.0
10 *
11 *  Unless required by applicable law or agreed to in writing, software
12 *  distributed under the License is distributed on an "AS IS" BASIS,
13 *  WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
14 *  See the License for the specific language governing permissions and
15 *  limitations under the License.
16 */
17/**
18 * @author Pavel Dolgov
19 * @version $Revision$
20 */
21package org.apache.harmony.awt;
22
23import java.util.Iterator;
24
25import org.apache.harmony.awt.internal.nls.Messages;
26
27/**
28 * ReadOnlyIterator
29 */
30public final class ReadOnlyIterator<E> implements Iterator<E> {
31
32    private final Iterator<E> it;
33
34    public ReadOnlyIterator(Iterator<E> it) {
35        if (it == null) {
36            throw new NullPointerException();
37        }
38        this.it = it;
39    }
40
41    public void remove() {
42        // awt.50=Iterator is read-only
43        throw new UnsupportedOperationException(Messages.getString("awt.50")); //$NON-NLS-1$
44    }
45
46    public boolean hasNext() {
47        return it.hasNext();
48    }
49
50    public E next() {
51        return it.next();
52    }
53}
54