1 /*
 2  * Copyright (c) 2014, Oracle and/or its affiliates. All rights reserved.
 3  * DO NOT ALTER OR REMOVE COPYRIGHT NOTICES OR THIS FILE HEADER.
 4  *
 5  * This code is free software; you can redistribute it and/or modify it
 6  * under the terms of the GNU General Public License version 2 only, as
 7  * published by the Free Software Foundation.
 8  *
 9  * This code is distributed in the hope that it will be useful, but WITHOUT
10  * ANY WARRANTY; without even the implied warranty of MERCHANTABILITY or
11  * FITNESS FOR A PARTICULAR PURPOSE.  See the GNU General Public License
12  * version 2 for more details (a copy is included in the LICENSE file that
13  * accompanied this code).
14  *
15  * You should have received a copy of the GNU General Public License version
16  * 2 along with this work; if not, write to the Free Software Foundation,
17  * Inc., 51 Franklin St, Fifth Floor, Boston, MA 02110-1301 USA.
18  *
19  * Please contact Oracle, 500 Oracle Parkway, Redwood Shores, CA 94065 USA
20  * or visit www.oracle.com if you need additional information or have any
21  * questions.
22  */
23 
24 /*
25  * @test
26  * @bug     8047795 8053938
27  * @summary Ensure that replaceAll operator cannot add bad elements
28  * @author  Mike Duigou
29  */
30 
31 import java.util.*;
32 import java.util.function.UnaryOperator;
33 
34 public class CheckedListReplaceAll {
35     public static void main(String[] args) {
36         List unwrapped = Arrays.asList(new Object[]{1, 2, 3});
37         List<Object> wrapped = Collections.checkedList(unwrapped, Integer.class);
38 
39         UnaryOperator evil = e -> (((int) e) % 2 != 0) ? e : "evil";
40 
41         try {
42             wrapped.replaceAll(evil);
43             System.out.printf("Bwahaha! I have defeated you! %s\n", wrapped);
44             throw new RuntimeException("String added to checked List<Integer>");
45         } catch (ClassCastException thwarted) {
46             thwarted.printStackTrace(System.out);
47             System.out.println("Curses! Foiled again!");
48         }
49 
50         unwrapped = Arrays.asList(new Object[]{});  // Empty list
51         wrapped = Collections.checkedList(unwrapped, Integer.class);
52         try {
53             wrapped.replaceAll((UnaryOperator)null);
54             System.out.printf("Bwahaha! I have defeated you! %s\n", wrapped);
55             throw new RuntimeException("NPE not thrown when passed a null operator");
56         } catch (NullPointerException thwarted) {
57             thwarted.printStackTrace(System.out);
58             System.out.println("Curses! Foiled again!");
59         }
60     }
61 }