1 /*
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   3  * DO NOT ALTER OR REMOVE COPYRIGHT NOTICES OR THIS FILE HEADER.
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   6  * under the terms of the GNU General Public License version 2 only, as
   7  * published by the Free Software Foundation.
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   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
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  19  * Please contact Oracle, 500 Oracle Parkway, Redwood Shores, CA 94065 USA
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  23 
  24 /*
  25  * @test
  26  * @bug     8047795
  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.BiFunction;
  33 
  34 public class CheckedMapReplaceAll {
  35     public static void main(String[] args) {
  36         Map<Integer,Double> unwrapped = new HashMap<>();
  37         unwrapped.put(1, 1.0);
  38         unwrapped.put(2, 2.0);
  39         unwrapped.put(3, 3.0);
  40 
  41         Map<Integer,Double> wrapped = Collections.checkedMap(unwrapped, Integer.class, Double.class);
  42 
  43         BiFunction evil = (k, v) -> (((int)k) % 2 != 0) ? v : "evil";
  44 
  45         try {
  46             wrapped.replaceAll(evil);
  47             System.out.printf("Bwahaha! I have defeated you! %s\n", wrapped);
  48             throw new RuntimeException("String added to checked Map<Integer,Double>");
  49         } catch (ClassCastException thwarted) {
  50             thwarted.printStackTrace(System.out);
  51             System.out.println("Curses! Foiled again!");
  52         }
  53     }
  54 }